Computer Awareness Questions and Answers Part 1 Computer Awareness Questions and Answers Part 2 Computer Knowledge Questions and Answers Part 2 Computer Knowledge Questions and Answers Part 1 Computer Networks Questions and Answers Computer Basic GK Questions and Answers Competitive Exam interview questions and answers Set 1 Competitive Exam interview questions and answers Set 2 Competitive Exam interview questions and answers Set 3 Competitive Exam interview questions and answers Set 4 Competitive Exam interview questions and answers Set 5 Competitive Exam interview questions and answers Set 6 C-Sharp Array C-Sharp Collection Introduction Java Programming Core Java basics concepts and OOPs concept. Exception Handling Java Multithreading Collections Examples OOPs Concepts in C-Sharp Top Core Java Interview Questions with Answers OOPS Concepts in Java with Examples JSP Overview Struts 2 Introduction and Overview Java Serialization Interview Questions synchronization interview questions The Non-Blockin I/O (NIO2) feature of Jdk 7 The Fork and Join API of jdk 7 Java 7 Exception handling Java (programming language) Hibernate Tutorial for beginners with Examples Spring Framework String in java JSP Overview Mapping in Hibernate or Association Mapping in Hibernate Database Portability Considerations Mapping with Annotation in Hibernate Collection mapping Basic O/R Mapping Hibernate Mapping types Caching machanism HQL: The Hibernate Query Language Join in hibenrate Struts 2 Architecture Struts 2 Actions Struts 2 database integration Struts 2 e-mails Struts 2 validation framework Struts 2 type conversions Struts 2 localization Struts 2 Thems and Templates Batch processing Native SQL

Interview Questions and Answers

Questions Views
Advantage of AVL tree over BST? Read More →
What is worst time complexity of binary search tree? Read More →
What is AVL trree? Read More →
What is Full binary tree? Read More →
What is complete binary tree? Read More →
List the time complexity of different searching algorithm . Read More →
List the time complexity of different type of sorting. Read More →
What is time complexity in Linked list? Read More →
List the different time complexity of array operations. Read More →
What is Complexity in data structure? Read More →
Write a function to perform the deletion on circular Queue. Read More →
How traverse the Circular Queue? Read More →
What is time complexity of insertion new node at end in doubly linked list? Read More →
Write a code to find length of circular linked list. Read More →
Write code to delete the item at end in circular linked list. Read More →
What is insertion at end in circular linked list, write code for that. Read More →
How we perform the binary search on array? Read More →
What is In-order traversal of binary search tree? Read More →
What is postorder traversal of Binary search tree? Read More →
What is preorder traversal of Binary search tree? Read More →
Which data structure is used to show Hierarchical data model Read More →
What are the Applications of Multilinked Structures? Read More →
What is the difference between NULL and VOID? Read More →
List Some Applications of Multi-linked Structures? Read More →
What is the advantage of selection sort? Read More →
What are the advantage of binary search over linear search? Read More →
In what scenario, Binary Search can be used? Read More →
What is binary search ? Read More →
What is linear search? Read More →
List the application of Graph data structure. Read More →
Which data structure is used in BFS and DFS algorithm? Read More →
What is Graph data structure? Read More →
What are the application of Tree data structure ? Read More →
List the application of tree data structure. Read More →
What is B and B+ tree, tell comparison between them Read More →
Difference between B tree and B+ tree? Read More →
What is B tree , state some property of B tree. Read More →
How can AVL Tree be useful in all the operations as compared to Binary search tree? Read More →
Is Queue is used to implement the Breadth first search? Read More →
Why we use linked list over array? Read More →
Insertion at starting pont in array or linked list, which one is better? Read More →
Which one take less time? Deletion of first element in array or deleteion of first node in linked lst. Read More →
Array or linked list, in which of those we get the i'th index fastly? Read More →
Which data structure is used to implement LIFO(last in first out) Read More →
Which data structure is used in First come first serve CPU scheduling? Read More →
Which data structure we use to solve the postfix expression? Read More →
Which data structure suits the most in the tree construction? Read More →
Stack is implemented by which data structure? Read More →
What is the maximum number of nodes in a binary tree of height k? Read More →
What is Binary search tree? Read More →
What is Binary Tree? Read More →
What is Tree data structure? Read More →
How many type of tree dat structure are possible ? Read More →
List the different types of tree dat structure. Read More →
Which data structure is used to implement the DFS? Read More →
Which data structure is used to implement the BFS? Read More →
Which data structure is used to implement the recursion? Read More →
How many Queue we need to implement the priority queue? Read More →
What is the minimum number of queues that can be used to implement a priority queue? Read More →
What are the drawbacks of array implementation of Queue? Read More →
What is dequeue in Queue data structure ? Read More →
What is linear Queue data structure? Read More →
What is the application of the Queue. Read More →
List the type of the Queue Data structure. Read More →
Whta is the drawback of the Queue implemented by the Array? Read More →
List the application of the Queue dat structure ? Read More →
What is queue data structure? Read More →
What is Doubly linked list? Read More →
Write a syntax to create a circular linked list. Read More →
Write a syntax to create a doubly linked list. Read More →
Write syntax to create a singly linked list. Read More →
What are the advantages of Linked List over an array? Read More →
Are linked lists considered linear or non-linear data structures? Read More →
What is linked list data structure? Read More →
How are the elements of a 2D array are stored in the memory? Read More →
What is multi-dimensional array Read More →
How to reference all the elements in a one-dimension array? Read More →
What is Array ? Read More →
Which notations are used in Evaluation of Arithmetic Expressions using prefix and postfix forms? Read More →
Write postfix expression of this (A + B) * (C - D) Read More →
What is postfix expression? Read More →
Write the steps involved in the insertion and deletion of an element in the stack. Read More →
Difference between Push and pop operation in stack? Read More →
What is peek operation on stack? Read More →
What is pop operation in stack? Read More →
What is push operation in stack? Read More →
What is stack overflow condition? Read More →
Write the stack operation. Read More →
What are the operations which we perform on the stack? Read More →
List the area of applications where stack data structure can be used? Read More →
What is the application of the stack? Read More →
What do you understand by stack data structure? Read More →
Which data structure are used to perform recursion? Read More →
List the data structures which are used in RDBMS, Network Data Modal, and Hierarchical Data Model. Read More →
What is the difference between file structure and storage structure? Read More →
List the area of applications of Data Structure. Read More →
What is non-linear data structure? Read More →
What is linear data structure? Read More →
Describe the type of the data structure. Read More →
What do you understand by Data Structure? Read More →
What is mutex in C++ ? Read More →
How multi threading works in C++ ? Read More →
What is thread in C++ ? Read More →
Is C++ supports multi threading concept? Read More →
How handle Exception in C++ ? Read More →
What is divide by zero error? how handle in C++ ? Read More →
What is catch in C++ ? Read More →
What is try in C++ ? Read More →
Is C++ support exception handling ? Read More →
What is exception handling in C++? Read More →
What is the features of the OOPs in C++ ? Read More →
Function overriding is example of which type of polymorphism? Read More →
Function overloading is example of which type of polymorphism? Read More →
What is the use of the scope resolution operator in C++? Read More →
How make function in classes in C++ ? Read More →
print hello world without using semicolon in C++ Read More →
What is type casting in C++? Read More →
What is storage class specifier in C++? Read More →
What is typedef in C++? Read More →
What is enum in C++? Read More →
Define lambda expression in C++ Read More →
What do you understand by 'this' pointer? Read More →
What is super keyword in C++? Read More →
What is the scope of the variable in C++ ? Read More →
How we define the function outside the class ? Read More →
What is destructor and how we make it, in C++? Read More →
What is copy constructor in C++? Read More →
Define parametrized constructor in C++ Read More →
What is Default constructor in C++? Read More →
How many types of constructor are in C++? Read More →
What do you understand by constructor in C++? Read More →
Define vector in C++ Read More →
What is identifier in C++ Read More →
Define abstraction in C++ Read More →
Define Scope resolution operator in C++ Read More →
Define SRO in C++ Read More →
What is the Inline function in C++? Read More →
What do you understand by friend function in C++ language? Read More →
What is the Access modifier in C++ ? Read More →
What is the virtual destructor in C++? Read More →
Difference between function overloading and operator overloading in C++ ? Read More →
What is class template in C++ ? Read More →
What is pure virtual function in C++ ? Read More →
What is 'this' pointer in C++ ? Read More →
What is the purpose of the 'delete' operator in C++? Read More →
Define Constructor in C++ Read More →
What is virtual inheritance in C++? Read More →
What is overloading in C++? Read More →
What is an overflow error? Read More →
Define how Dynamic memory allocation in C++? Read More →
Define new and delete in C++ Read More →
It is possible to create a unnamed class? how make object of such class? Read More →
What is unnamed class in C++? Read More →
What is destructor in C++ Read More →
When should we use multiple inheritance? Read More →
Define final in C++ Read More →
Define virtual class in C++ Read More →
Define virtual function in C++ Read More →
What is the friend function in C++? Read More →
What are the methods of exporting a function from a DLL? Read More →
What is difference between malloc() and new() ? Read More →
What is difference between an array and the list in C++ ? Read More →
What is Object Oriented Programming (OOP)? Read More →
What is the access specifier in C++? Read More →
What is the full form of the STL in C++ Read More →
How delete[] is different from delete? Read More →
What is the std in C++? Read More →
Which type of operator are permitted on pointer? Read More →
Who create the C++? Read More →
What is Token in C++ programming language? Read More →
What is name space in C++? Read More →
What is final in C++ ? Read More →
What is virtual function in C++ ? Read More →
What do you understand the polymorphism in C++ programming language? Read More →
What is the difference between function overloading and function overriding in C++ programming language? Read More →
What is the function overriding in C++ Read More →
What is the function overloading in C++? Read More →
What are the types of polymorphism in C++ ? Read More →
How many types of inheritance are possible in C++? Read More →
What is the polymorphism in C++? Read More →
What is data hiding in C++ programming language? Read More →
What is the abstraction in C++ programming language? Read More →
What is Encapsulation in C++ programming language? Read More →
What is Hierarchical inheritance in C++ programmig language? Read More →
What is multiple Inheritance in C++? Read More →
What is multiple inheritance in C++? Read More →
What is single inheritance in C++? Read More →
What is inheritance in C++? Read More →
Is C language code run in C++? Read More →
Difference between data member and data method in C++ Read More →
How declare the object in C++? Read More →
Difference between Structure and Class ? Read More →
How we declare the class in C++? Read More →
What are the various OOPs concepts in C++? Read More →
What is a class? Read More →
What is the difference between reference and pointer? Read More →
What is the difference between C and C++ language? Read More →
Is C++ is procedural language? Read More →
What are the advantage of the C++ language Read More →
What is C++ language? Read More →
Write a program to count the sexy prime in between the two number range. Read More →
print first 10 prime number Read More →
Write a program to titled the given string Read More →
Write a program to convert the decimal number to its octal equivalent Read More →
Write a program to convert the decimal number to its binary equivalent Read More →
Write a program to print the star triangle Read More →
Write a program to make the pascal triangle Read More →
Write a program to find the HCF of two number Read More →
Write a program to find the LCM of the two number Read More →
Write a program to display the Fibonacci series Read More →
Write a program to print the following : 1 12 123 1234 12345 Read More →
Generate random number in between 0 to 10 in C langauge Read More →
What are the ways to a null pointer can use in C programming language? Read More →
What is the explanation for modular programming? Read More →
Check calindrome string in C language Read More →
Check palindrome string in C language Read More →
Check maximum between two number using loop. Read More →
Write a program to find the maximum of two number without using the if statement Read More →
Write a program to convert the lower case alphabet to upper case alphabet Read More →
Write a program to change the upper case letter to lower case letter Read More →
Write a program to print "HelLo world" without using the semicolon. Read More →
Write a program to check alphabet is in UPPER case or not Read More →
Write a program to check alphabet is in lower case or not? Read More →
Write a program to check given char is alphabet or not. Read More →
Write a program to check number is prime or not Read More →
Factorial by the recursion in C language ? Read More →
Write a program to find the factorial of the number. Read More →
Write a program to show the char by using the ASCII value. Read More →
Write a program to Print ASCII value of any character in C language. Read More →
Write a program to swap two variable without use third variable. Read More →
In which header file the rand() function is define? Read More →
Describe dynamic data structure in C programming language? Read More →
How we generate the random number in C language? Read More →
What are the modifiers available in C programming language? Read More →
How much difference in between the ASCII value of UPPER case letter and lower case letter? Read More →
Where we use the continue statement? What if we placed continue statement in if condition body? Read More →
What is recursion in C language? Read More →
It is possible to create our own header file in C language? Read More →
What is the explanation for cyclic nature of data types in C? Read More →
What is the difference between = and == in C language? Read More →
Describe Wild Pointers in C? Read More →
What is return statement in C language? Read More →
What is exit(0) in C language? Read More →
What is the difference between abs() and fabs() functions? Read More →
Describe static function with its usage? Read More →
We call the reserved word as ? Read More →
What is the process to create increment and decrements stament in C? Read More →
What is the description for syntax errors? Read More →
Difference between Entry control loop and Exit control loop in C language? Read More →
What is Exit control loop in C language? Read More →
What is Entry control loop in C language? Read More →
What is the DEFINE in C language? Read More →
What is the difference between %d and %c in C language? Read More →
What is the difference between %c and %s in C language? Read More →
What is the string in C language? Read More →
Write a program to print “hello world” without using a semicolon? Read More →
What is the difference between a structure and a Union? Read More →
What is the difference between the Array and the structure? Read More →
What is the difference between the array and the pointers? Read More →
Difference between malloc() and calloc() functions? Read More →
What is the use of the %u in the C language? Read More →
What is a pointer on a pointer in C programming language? Read More →
What is the difference between Pass by value and Pass by reference? Read More →
What is the difference between the Void and Null Pointer? Read More →
What is a Dangling Pointer in C? Read More →
If we put any positive number in the condition of loop or any condition statement then what happen? Read More →
What is the difference between while(0) and while(1) ? Read More →
What is the difference between --a and a-- ? Read More →
What is the difference between ++a and a++? Read More →
What is the ASCII value of the lower case Alphabet? Read More →
What is ASCII value of Upper case letter ? Read More →
What is the Dynamic memory allocation? Read More →
Difference between static and Dynamic memory allocation? Read More →
What is the static and Dynamic memory allocation? Read More →
What is the memory leak in C language? Read More →
What is the difference between Static and global variable in C language? Read More →
What are the global variable in C language? Read More →
What is local variable? Read More →
What is the static variable in C language? Read More →
How many keyword we have in C language? Read More →
What are the keywords in C language? and how many keywords we have in C language? Read More →
How we store the value greater than the 32768 in the integer variable? Read More →
What is the range of the char data type? Read More →
To store any single char, how much space it need? Read More →
If the C program can not have the main() function then what happens? Read More →
How i take only positive integer from the user input? Read More →
What is the range of the integer data type in C language? Read More →
What are the basic data type in C language? Read More →
What if we execute the C language code without the main() function? Read More →
What if we compile the C language code without the main() function? Read More →
What if one header file is included twice in C language? Read More →
How we take an input of string with white space? Read More →
Which function we use to take a user define value in C language? Read More →
What is the include in C language? Read More →
What is the use of header file in C language? Read More →
Why C language is High level language? Read More →
What is High level language or low level language? Read More →
What if You compile the C language code? Read More →
Is C language is platform Dependent? Read More →
What is the Key Features of C language? Read More →
How fetch the data from the table which do not have duplicate data. Read More →
How fetch top 5 record of the table? Read More →
How find the MAX and Second max value from the database table? Read More →
How we get the maximum value of the column of the table? Read More →
If we have a two table of same structure and same column and we want to fetch common record from both the table then what we do? Read More →
What is DROP command in SQL? Read More →
What is the difference between the Truncate, DROP, delete? Read More →
What is VIEW in SQL? Read More →
What is DML in DBMS? Read More →
What is DCL in DBMS? Read More →
What is DDL in DBMS? Read More →
Different type of language in the DBMS? Read More →
What is RENAME command in SQL? Read More →
How we change the name of the table in the SQL? Read More →
How we change the name of the column of the table in SQL? Read More →
How we delete the existing column from the table? Read More →
Write query to add new column in the table. Read More →
What is the use of ALTER command? Read More →
What the work of the GROUP clause? Read More →
How many clause we have in SQL? Read More →
How we insert the data inside the table? Read More →
What is the use of the select statement in the SQL? Read More →
What is SQL? Read More →
If we delete the primary of one table then what about the foreign key which refer to that primary key? Read More →
We any Non prime attribute defines the Another non prime attribute of the same table then this dependency is called as? Read More →
Advantage of the Normalization? Read More →
If there is only two column or 2 attribute in the table then table is in which Normal form? Read More →
What is De-normalization? Read More →
If there is no transitive dependency in the table then table is in which normal form? Read More →
In there is no partial dependency in the table then table is in which Normal Form? Read More →
In which Normal Form, the chance of data lose is their? Read More →
What is the purpose of the Normalization in database? Read More →
What is the Difference between Primary key and foreign Key? Read More →
What is the Difference between Primary key and Unique key? Read More →
What is Unique Key? Read More →
What is Foreign Key? Read More →
What is Sub-ordinate Key? Read More →
What is Alternate key? Read More →
Difference between candidate key and primary key? Read More →
What is primary key? Read More →
Difference between Superkey and candidate key? Read More →
What is candidate Key? Read More →
What is the super key? Read More →
What do you understand by the key in database? Read More →
What we called the attribute which is not part of the candidate key? Read More →
What we called the attribute which is part of the candidate key? Read More →
What is prime and non attribute in table attribute? Read More →
Difference between prime and non prime attribute? Read More →
What is Transitive dependency? Read More →
What is partial dependency in database table? Read More →
What is Non prime attribute? Read More →
What is prime attribute? Read More →
What do you understand by BCNF? Read More →
What is the full form of BCNF? Read More →
What is third normal form? Read More →
What is second normal form? Read More →
What is first normal form? Read More →
How many type of Normalization is possible? Read More →
What we do to solve the Anomaly problem? Read More →
What is deletion anomaly? Read More →
What is Insertion anomaly? Read More →
What is Anomaly problem? Read More →
What is Normalization in Database? Read More →
first function in MYSQL is done by which function? Read More →
What are the technical specifications of MySQL? Read More →
In which language MySQL has been written? Read More →
How can you change the password of a MySQL user? Read More →
What is the function of mysqldump? Read More →
How we can DROP the View in MySQL ? Read More →
How we can create a View in MySQL? Read More →
What is view? Read More →
What is meant by decimal (5,2)? Read More →
What is an index? How can an index be declared in MySQL? Read More →
Define ALTER commands in MySQL ? Read More →
How we remove column from the table? Read More →
How we can add a new column in the table ? Read More →
What is the purpose of using a HEAP table? Read More →
How can you retrieve a portion of any column value by using a select query? Read More →
How can you change the name of any existing table by using the SQL statement? Read More →
Which MySQL function is used to concatenate string? Read More →
Which statement is used in a select query for partial matching? Read More →
What is the difference between NOW() and CURRENT_DATE()? Read More →
How can you filter the duplicate data while retrieving records from the table? Read More →
What is the difference between mysql_fetch_array() and mysql_fetch_objec() ? Read More →
What is mysql_fetch_object ? Read More →
What is mysql_fetch_array() ? Read More →
Difference between CHAR and VARCHAR in MySQL ? Read More →
What is the use of CHAR and VARCHAR in MySQL? Read More →
Difference between Primary key and foreign Key ? Read More →
What is Foreign Key? Read More →
What is primary Key? Read More →
What are the purposes of using ENUM and SET data types? Read More →
What is the function of myisamchk? Read More →
What are the disadvantage of MySQL ? Read More →
What are the advantage of MySQL ? Read More →
What are the Features of MySQL ? Read More →
What is the default port number for MySql ? Read More →
How we can find the union of two sets in Python ? Read More →
Find the Intersection of two set in Python ? Read More →
Why we call list as a mutable in Python ? Read More →
Find all even number from the list using filter() function in Python ? Read More →
What is the syntax of the filter function in Python ? Read More →
Write a program to make a factorial of the given number in Python ? Read More →
Is python numpy better than lists? Read More →
What is map() function in Python ? Read More →
What does an object() do? Read More →
Does python make use of access specifiers? Read More →
How do you do data abstraction in Python? Read More →
Define encapsulation in Python? Read More →
What do you understand by polymorphism in Python ? Read More →
Does python support multiple inheritance? Read More →
How we can create a class in Python ? Read More →
How we can install the new module in python ? Read More →
How we can import the module in Python ? Read More →
Does Python have OOps concepts? Read More →
What is the difference between append() and insert() function of list? Read More →
How do you insert a new item in list at required index position in Python ? Read More →
How we can add new item in list at the end ? Read More →
How you can reverse the items in the list in Python ? Read More →
What is the difference between sort() and sorted() function in Python ? Read More →
Sort the string and convert it into the list in Python. Read More →
How we can sort the list in Python ? Read More →
How we can add two string in Python ? Read More →
How we can find the length of the set data type in Python ? Read More →
What is the purpose of using the 'not in' in Python ? Read More →
What is the purpose of the 'is' in python ? Read More →
What is the purpose of the 'in' in Python ? Read More →
How we print the statement in Python ? Read More →
What function of Python we use to make every first alphabet of each word in string will be of Upper case ? Read More →
How do you convert the string in all uppercase in Python ? Read More →
How do you convert the string in all lowercase ? Read More →
How we can capitalized first word of the string in Python ? Read More →
Write a program to swap two variable in one line of code in Python. Read More →
Swap two number without using third variable in Python ? Read More →
Swap two variable value using third variable in Python ? Read More →
How we write a command in Python ? Read More →
How we can reverse the string in Python in one line ? Read More →
What does [::-1] do? Read More →
What is __init__ in python? Read More →
Is indentation required in python? Read More →
What Happen if we pass only one argument in complex() function ? Read More →
Minimum number of argument pass in complex number is ? Read More →
How we make a complex number in Python ? Read More →
What is Type conversion in Python ? Read More →
Is python case sensitive? Read More →
Name some commonly used built-in modules in Python? Read More →
What is PYTHONPATH? Read More →
What type of language is python? Programming or scripting? Read More →
Explain what is Dogpile effect? How can you prevent this effect? Read More →
Explain how you can access sessions in Flask? Read More →
Explain what is the common way for the Flask script to work? Read More →
Explain what is Flask & its benefits? Read More →
Mention what is the difference between Django, Pyramid, and Flask? Read More →
Write a program to find the random number between 0 to 10 . Read More →
How we can generate random integer number between two range ? Read More →
How we can generate random number between 0 and 1 ? Read More →
How we can delete the file in Python ? Read More →
Mention what are the rules for local and global variables in Python? Read More →
What is module and package in Python? Read More →
What is the difference between Xrange and range? Read More →
What is negative index in Python ? Read More →
How type of variable is decided in Python ? Read More →
What is unittest in Python? Read More →
Why lambda forms in python does not have statements? Read More →
What do you know about the lambda function in Python ? Read More →
What is namespace in Python ? Read More →
What do you understand by the canvas Programming ? Read More →
What is the Difference between the List and the Array in Python ? Read More →
What is the default data type return by the input() function ? Read More →
How Python is Interpretor ? Read More →
What is pickling and unpickling? Read More →
What are the different way to create a Empty Numpy array in Python ? Read More →
What is Numpy in Python ? Read More →
How we can find the occurrence of the item in list in Python ? Read More →
How we make a dictionary using two list in Python ? Read More →
How we can convert a list to tuple in Python ? Read More →
How we can convert the List to Sets in Python ? Read More →
How we can convert the list to string in Python ? Read More →
What is the work of the yield keyword in Python ? Read More →
Why and when do you use Generators in Python? Read More →
Write a command to debug the Python program Read More →
List down some of the PDB commands for Debugging Python Programs? Read More →
Which Python function is used to make a number as a string ? Read More →
What is the purpose of Docstrings in Python? Read More →
What are the different methods to copy an object in Python? Read More →
What is the work of the self keyword in Python ? Read More →
How the ternary operator works in Python ? Read More →
What are class or static variables in Python Programming? Read More →
What is the use of the zip() function in Python ? Read More →
How we can access the global variable in Python ? Read More →
What is the use of the global() function in Python ? Read More →
What do you understand by Python Enumerate ? Read More →
How do you write a Conditional Expression in Python? Read More →
What is the syntax for List Comprehension in Python Read More →
How do you check the presence of a Key in a Dictionary? Read More →
How we van delete the items from the Dictionary in Python ? Read More →
What are the Decorators in Python ? Read More →
How do you add elements to a Dictionary in Python? Read More →
How do you traverse through a Dictionary object in Python? Read More →
How we can read the dictionary in Python ? Read More →
How we can create a dictionary in Python ? Read More →
What is the Closures in Python? Read More →
What is the Python Generator ? Read More →
What is the difference between an Iterator and Iterable? Read More →
What do you understand by Python Iterators ? Read More →
Why we use the Finally block in Python Read More →
What is Exception Handling in Python programming language ? Read More →
How we Handle the exception in Python ? Read More →
What is error and exception in Python ? Read More →
What is composition in Python ? Read More →
What Syntax we use for inheritance the class in python ? Read More →
What is Inheritance in Python programming language ? Read More →
How to assign values for the class attributes at Runtime? Read More →
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Will J2ME applications run on J2SE? Read More →
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What is the name of 10 classes of J2SE which are not used in J2ME?. Read More →
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What is advantage of J2ME? Read More →
Explain K Virtual Machine and its architecture? Read More →
What hardware and software requirements of a device that intends to implement the MIDP?. Read More →
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What are basics Software\'s for J2ME applications?. Read More →
what is the Limitations with J2ME explain?. Read More →
what is the Differences Between Core Java and Java for J2ME?. Read More →
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Describe Validate() and reset() methods. Read More →
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How properties of a form are validated in Struts Read More →
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What is Struts? Read More →
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How to get file last modified time in java?. Read More →
How to get file URI reference in java?. Read More →
How to get file URI reference in java?. Read More →
Which Transaction management type is more preferable? Read More →
What are the benefits of the Spring Framework’s transaction management? Read More →
What are the types of the transaction management Spring supports ? Read More →
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How to read file content using byte array in java?. Read More →
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How to create and store property file dynamically in java?. Read More →
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What does @Qualifier annotation mean? Read More →
How to Filter the files by file extensions and show the file names in java?. Read More →
How to Filter the files by file extensions and show the file names in java?. Read More →
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Which HTTP method is non-idempotent? Read More →
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Why we need to work with the Spring? Read More →
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Differentiate between GET and POST?. Read More →
Explain the advantages of JSP?. Read More →
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Simple Example of TreeMap class in Java . Read More →
Simple Example of LinkedHashMap class in Java . Read More →
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Simple Example of PriorityQueue in Java . Read More →
Simple Example of Sorting the elements in Java . Read More →
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Simple Example of TreeSet class in Java . Read More →
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Simple Example of ListIterator Interface in Java . Read More →
Simple Example of LinkedList in Java . Read More →
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How can I set a cookie and delete a cookie from within a JSP page? Read More →
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Simple Example of ArrayList in Java . Read More →
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How to create First JSP Page? Read More →
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Explain lifecycle methods of jsp?. Read More →
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Difference between include directive and include action in JSP Read More →
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what is the purpose of finalize() method in java? Read More →
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What is include directive in JSP?. Read More →
what is the NIO.2 feature of java 7 new IO API? Read More →
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what usage of Declaration Tag explain with example?. Read More →
Expalin type of JSP tags in uses?. Read More →
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How to include static files in a JSP page? Read More →
Explain Implicit objects in JSP?. Read More →
Explain JSP URL mapping? What is URL hiding or protecting the JSP page? Read More →
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Is JSP variable declaration thread safe? Read More →
What is the life-cycle of JSP? Read More →
what is the multi-catch feature of java 7? Read More →
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Explain JSP Technology?. Read More →
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What stringbuffer method in java used?. Read More →
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What is the benefit of Generics in Collections Framework? Read More →
What are the basic interfaces of Java Collections Framework? Read More →
How to create String buffer in java?. Read More →
What is collection framework in Java? give its advantage? Read More →
What is binary literals feature in jdk 1.7? Read More →
What is difference between Compare to and equals method in java?. Read More →
Can we compare String using == operator? What is risk? Read More →
What are the new features introduced in jdk 1.7? Read More →
What is difference between String and new String() in java? Read More →
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How to terminate a thread in Executor Framework in java? Read More →
Write a method that will remove given character from the String in java? Read More →
What is difference between shutdownNow() and shutdown() in Executor Framework in java? Read More →
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What is Executors in java Executor Framework? Read More →
How to Split String in java? Read More →
How do you check if two Strings are equal in Java? Read More →
What is the role of ExecutorService in Java? Read More →
Write a function to determine whether or not a string is a palindrome?. Read More →
What do you understand by Executor Framework in Java, what is java executor framework Read More →
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Write a function to determine whether or not a string is a palindrome.? Read More →
what methods supported by String class in java? Read More →
what string method in java? Read More →
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How to access private field using Reflection in Java? Read More →
What are the basic Functionality of Reflection Api in Java? Read More →
How can you get the class object from a class name? Read More →
What are the disadvantage of using the reflection API? Read More →
What is Reflection in Java and where is used? Read More →
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What is Java String Pool? Read More →
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When you will synchronize a piece of your code? Read More →
What are synchronized methods and synchronized statements? Read More →
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How many types of memory areas are allocated by JVM? Read More →
Can static methods be synchronized? Read More →
Can a thread call multiple synchronized methods on the object of which it hold the lock? Read More →
what is the Difference Between String , StringBuilder and StringBuffer Classes in java?. Read More →
Can we use String in switch case? Read More →
What are different ways to create String Object in java? Read More →
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Why String is an immutable Object? Read More →
What is String in Java? String is a data type? Read More →
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What is Bootstrap, Extension and System Class loader? Read More →
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What’s the difference between “Abstract” classes and “Interfaces”? Read More →
what is Java Naming conventions?. Read More →
what is Java Naming conventions?. Read More →
What is StackOverflowError? Read More →
What is Object Oriented Programming? Read More →
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What is JVM (Java Virtual Machine)? Read More →
How to create custom Exception? Read More →
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What are the possible combination to write try, catch finally block? Read More →
What is use of throws keyword? Read More →
What is throw keyword? Read More →
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What is difference between abstract class and interface? Read More →
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Can we handle more than one exception in a single catch block? Read More →
When a finally block does not get executed? Read More →
Can you declare the main method as final?. Read More →
Is it possible to have finally block without catch block? Read More →
Can we have multiple catch blocks following a single try block? Read More →
what is the Difference between method Overloading and Overriding?. Read More →
Can we have a try block without catch or finally block? Read More →
Can we have a try block without catch or finally block? Read More →
What is finally block? Read More →
Can static block throw exception? Read More →
What is the difference between Error and Exception? Read More →
Can we have an empty catch block? Read More →
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What happens when exception is thrown by main method? Read More →
What are the various types of constructors? Read More →
What is difference between final, finally and finalize in Java? Read More →
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What are different scenarios causing “Exception in thread main”? Read More →
What is OutOfMemoryError in Java? Read More →
How to write custom exception in Java? Read More →
What are access modifiers? Read More →
What is difference between throw and throws keyword in Java? Read More →
What is difference between Checked and Unchecked Exception in Java? Read More →
What is the relationship between a class and an object? Read More →
What are important methods of Java Exception Class? Read More →
Explain Java Exception Hierarchy followed by Throwable class? Read More →
Why we need Aggregation? Read More →
what are the the main keyword used in exceptation handling? Read More →
what are the the main keyword used in exceptation handling? Read More →
Can we overload main() method? Read More →
Serialization is NOT save the value of static class attributes. Why static variables are not serialized? Read More →
What is the Difference between volatile and transient keyword in Java? Read More →
What happens if the object to be serialized includes the references to other serializable objects? Read More →
what are the different approach to make object Serializable? Other than Serialization. Read More →
What is Serialization and deserialization in java given with example? Read More →
what is transient variables in java with example? Read More →
what is the 6 usage of this keyword in java?. Read More →
How many methods in the Serializable interface? Read More →
When to use private constructors in Java? Read More →
What is function overloading? Read More →
How downcasting is possible in java? Read More →
Why Multiple Inheritance is Not Supported in Java? Read More →
What is operator overloading? Read More →
What are the advantages or usage of threads? Read More →
Can we override the static method? Read More →
What is the difference between static and dynamic binding ? Read More →
what is the difference between serializable and externalizable interface in java? Read More →
why serialversionuid is required? Read More →
17.Can you create a program without main method ?. Read More →
What is a Serial Version UID (serialVersionUID) and why should I use it? Read More →
16.what is Runtime polymorphism or Dynamic Method Dispatch Read More →
how to serialization in java? Read More →
why serialization in java? Read More →
what is use of serialization in java? Read More →
What is Serialization? given an example. Read More →
15.point to be remember keyword final. Read More →
You have thread T1, T2 and T3, how will you ensure that thread T2 run after T1 and thread T3 run after T2? Read More →
14.what is the use of final keyword with Variables? Read More →
13.what is final Method. Read More →
12.What is final class - Using final to prevent inheritance?. Read More →
What is use of synchronized keyword? Read More →
What are the different states of a thread\'s lifecycle? Read More →
Difference between submit() and execute() method thread pool in Java? Read More →
What does yield() method of Thread class do? Read More →
You have thread T1, T2 and T3, how will you ensure that thread T2 run after T1 and thread T3 run after T2? Read More →
11.What is final variable and Use of final variable Read More →
What is ThreadLocal variable in Java? Read More →
Why wait, notify and notifyAll are not inside thread class? Read More →
10.what is the Advantage of OOPs over Procedure-oriented programming language Read More →
What happens when an Exception occurs in a thread? Read More →
9. what is the use of super keyword Read More →
How to stop thread in Java? Read More →
What is Executors Framework ? Read More →
8.What is the difference between abstraction and encapsulation? Read More →
Whar is race condition in multi-threading in java? Read More →
What is thread-safety? Read More →
7. What is an abstraction? Read More →
6. What is multiple inheritance and does java support? Read More →
5. What is Inheritance? Read More →
5. What is Inheritance? Read More →
4. What is Polymorphism? Read More →
3. What is Encapsulation? Read More →
Difference between Runnable and Callable in Java? Read More →
What is the difference between start() and run() method of thread class Read More →
When to use Runable and Thread in java? Read More →
How do you implement Thread in Java? Read More →
2. Write basic concepts of OOPS? Read More →
1. What is OOPS? Read More →
1. What is OOPS? Read More →
What is the difference between thread and process? Read More →
Collection framework in java interview questions Read More →
What is a Thread ? Read More →
What is exception handling? Read More →
What is Exception and Error ? Read More →
Which is superclass of Exception? Read More →
What is an exception? Read More →
What is WeakHashMap? Read More →
What is IdentityHashMap? Read More →
Arrange in the order of speed - HashMap,HashTable, Collections.synchronizedMap,concurrentHashmap? Read More →
Which data structure HashSet implements? Read More →
Which is faster to iterate LinkedHashSet or LinkedList? Read More →
What is ConcurrentHashMap? Read More →
How we can sort any class on the behalf of the properties of collection. Like we has a collection of named Employee objects we need shortlist by using Employee ID. Read More →
How can Arraylist be synchronized? Read More →
How to make a List (ArrayList,Vector,LinkedList) read only? Read More →
How to sort list of strings - case insensitive? Read More →
Can a null element added to a Treeset or HashSet? Read More →
How to sort list in reverse order? Read More →
Which design pattern Iterator follows? Read More →
if accessing through iterator is slow then why do we need it and when to use it? Read More →
If an ArrayList has to be iterate to read data only, what are the possible ways and which is the fastest? Read More →
Where you use List and where ArrayList? Read More →
Which all classes implement Set interface? Read More →
What are the classes implementing List interface? Read More →
What is difference between iterator access and index access? Read More →
When to use ArrayList or LinkedList? Read More →
What is difference between List and Set? Read More →
What is difference between Arrays and ArrayList ? Read More →
What is difference between HashMap and HashTable? Read More →
What is difference between Arrays and ArrayList ? Read More →
What is difference between HashMap and HashTable? Read More →
What is difference between ArrayList and vector? Read More →
Explain about HibernateTemplate? Read More →
What happens when both hibernate.properties and hibernate.cfg.xml are in the classpath? Read More →
What are the types of Hibernate instance states ? Read More →
What is the use of dynamic-insert and dynamic-update attributes in a class mapping? Read More →
How can you map a whole class as immutable? Read More →
What is Connection pools used for in Hibernate? Read More →
What are the Joined Subclasses in Hibernate? Read More →
What are the various advantages of Hibernate? Read More →
What are the different caching services provided by the Hibernate? Read More →
Explain the Fetching association in HQL? Read More →
Which interfaces are defined to execute the query in the Hibernate? Read More →
What are the Hibernate join options? Read More →
Which interfaces are defined to execute the query in the Hibernate? Read More →
What are the various mapping association in Hibernate? Read More →
What are the various Catching strategies in Hibernate? Read More →
What are the various transaction isolation isssues in Hibernate? Read More →
Explain Hibernate Transaction API? Read More →
What is the difference between JDBC and JTA transactions in Hibernate? Read More →
What are the Collection types in Hibernate ? Read More →
Difference between getCurrentSession() and openSession() in Hibernate ? Read More →
What is Lazy fetching in Hibernate? Read More →
What is outer join fetching in Hibernate? Read More →
What are the various fetching strategies from the database in Hibernate? Read More →
What is Hibernate Query By Example? Read More →
What is Hibernate QBC (Query By Criteria)? Read More →
Explain HQL (Hibernate Query Language)? Read More →
How will you retrieve an object by Identifier from the database in Hibernate? Read More →
What is the difference between beans and Hibernate? Read More →
How will you create a primary key using Hibernate? Read More →
What is the main advantage of using Hibernate than sql? Read More →
What is the difference between sorted and order collection in Hibernate? Read More →
What are different environments to configure hibernate? Read More →
What is lazy loading ? Read More →
What are the general considerations or best practices for defining your Hibernate persistent classes? Read More →
What is the difference between the session.update() method and the session.lock() method? Read More →
What is the difference between the session.get() method and the session.load() method? Read More →
How does Hibernate distinguish between transient (i.e. newly instantiated) and detached objects? Read More →
What are the pros and cons of detached objects? Read More →
What are the benefits of detached objects? Read More →
What is a Session? Can you share a session object between different theads? Read More →
What is a SessionFactory? Is it a thread-safe object? Read More →
How will you configure Hibernate? Read More →
What are managed associations and hibernate associations? Read More →
What are the different approaches to represent an inheritance hierarchy? Read More →
What are the different methods of identifying an object? Read More →
What is meant by Method chaining? Read More →
What do you create a SessionFactory? Read More →
What is the file extension you use for hibernate mapping file? Read More →
What are different environments to configure hibernate? Read More →
What are the Extension interfaces that are there in hibernate? Read More →
What are Callback interfaces? Read More →
What are the different levels of ORM quality? Explain ORM quality level. Read More →
What are the benefits of ORM and Hibernate? Read More →
Which are the different ways you can communicate between servlets? Read More →
What is the difference between doGet() and doPost()? Read More →
What the difference is between getSession (true) and getSession (false)? Read More →
What is URL rewriting? Read More →
What are cookies? Read More →
What are sessions in Servlets? Read More →
Why is HTTP protocol called as a stateless protocol? Read More →
What's the architecture of a Servlet? Read More →
What are the difference between Generic Servlet and Http Servlet? Read More →
What's the use of Servlet Context? Read More →
What are advantages of servlets over CGI? Read More →
Explain the life cycle methods of a Servlet. Read More →
What are the benefits of ORM and Hibernate? Read More →
If you use super() or this() in a constructor where you us it in the constructor? Read More →
Can constructors be overloaded? Read More →
Can overriding methods have different return types? Read More →
What is the difference between Overloading and Overriding? Read More →
What restrictions are placed on method overloading? Read More →
What is Method overloading? Read More →
What restrictions are placed on method overriding? Read More →
What is method Overriding? Read More →
When are automatic variable initialized? Read More →
When are static and non static variables of the class initialized? Read More →
What is the difference between class variable, member variable and automatic(local) variable Read More →
Why there are no global variables in Java? Read More →
What is the class variables ? Read More →
Describe the wrapper classes in Java. Read More →
What are Access Specifiers available in Java? Read More →
What is the difference between an argument and a parameter? Read More →
How many ways can an argument be passed to a subroutine and explain them? Read More →
What is casting? Read More →
What is the use of bin and lib in JDK? Read More →
What are methods and how are they defined? Read More →
What is the difference between constructor and method? Read More →
What is an Object and how do you allocate memory to it? Read More →
What are Class, Constructor and Primitive data types? Read More →
Explain the different forms of Polymorphism. Read More →
Explain the Polymorphism principle. Read More →
Explain the Inheritance principle. Read More →
What is encapsulation principle? Read More →
What is OOPS(Object-Oriented Programming) principle? Read More →
What is the difference between Assignment and Initialization? Read More →
What is the difference between procedural and object-oriented programs? Read More →
What is OOPS(Object Oriented Programming)? Read More →
What are POJOs? Read More →
What does ORM API ? Read More →
What is ORM ? Read More →
What is Hibernate? Read More →
What is MySQL? Read More →
What is the basic difference between ASP and ASP.NET? Read More →
What is ASP? Read More →
What is PHP? Read More →
The life cycle of a servlet? Read More →
What is Servlet? Read More →
What happens if parent is not serialized and child class are serialized? Read More →
What happened If we compile and run following code? Read More →
How many number of public class definitions can a source file have? Read More →
How many number of non-public class definitions can a source file have? Read More →
What is output of following ?explain why? Read More →
Can we declare a enum within interface ?If Yes then give an example .How we can call enum ? Read More →
Can we create a interface within interface ?If Yes then give an example .How we can call inner interface? Read More →
How to define an Interface? Read More →
What is interface? Read More →
Can abstract methods synchronized? Read More →
Can we declare abstract method private ? Read More →
Abstract method Read More →
Can we define abstract class (as inner class) and class ( outer class) in java ?If Yes give an example? Read More →
Why we define constructor in abstract class in java when we can't initialized it abstract class. Or how constructor of abstract class can used. Give an example Read More →
How to define an Abstract class? Read More →
Can we define abstract class (as outer class) and class ( inner class) in java ?If Yes give an example . Read More →
What is abstract class in java? Read More →
Can abstract modifier be applied to a variable? Read More →
What do you understand by Synchronization? Read More →
Java Virtual Machine (JVM) Read More →
When we can declare a method as abstract method ? Read More →
What are different types of access modifiers? Read More →
What is garbage collection? Read More →
What happens if you inherit multiple interfaces and they have conflicting method names? Read More →
Whats the difference between the System.Array.CopyTo() and System.Array.Clone()? Read More →