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Can we define abstract class (as outer class) and class ( inner class) in java ?If Yes give an example .

Yes! We can do it.

public abstract class TestR4R{

public TestR4R(){

}

public TestR4R(String str1 , String str2) {

}

class Test extends TestR4R{

public Test(){

super();

}

public Test(String str1 , String str2){

super(str1,str2);

}

}

}

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