String represents combinations of character literals
that are enclosed in double quotes, i.e.) any character(s) inside double quotess
Each character in a string is a 16-bit Unicode character, to provide a rich, international set of characters.
The String class is immutable, so that once it is created a String object cannot be changed.
String class is from java.lang package.
It is a final class.
String index is zero based.
In Java, strings can be represented using:
Array of characters
The String class