Answer Posted / srinu

abstract class AbstractParent
{
void parentMethod1()
{
System.out.println("def of non abstract method from parent");
}
abstract void parentMethod2();
}

abstract class AbstractChild extends AbstractParent
{
void childMethod1()
{
System.out.println("def of non abstract method from
abstract child");
}
void parentMethod2()
{
System.out.println("def of parent abstract method from
abstract child");
}
abstract void childMethod2();
}
class ConcreteChild extends AbstractChild
{
void childMethod2()
{
System.out.println("def of child abstract method from
concrete child");
}
}
public class A1
{
public static void main(String args[])
{
ConcreteChild obj = new ConcreteChild();
obj.parentMethod1();def of non abstract method from parent
obj.parentMethod2();def of parent abstract method from
abstract child
obj.childMethod1();def of non abstract method from abstract
child
obj.childMethod2();def of child abstract method from
concrete child
}
}

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