Answer Posted / ram

You need object of class 'X', but you want some custom
behavior for the object, not following the behavior defined
by the class 'X'.
Solution 1: create subclass 'Y' extending 'X'. Override
required methods(for custom behavior). create instance of Y
in your code and use it.
Solution 2: But you can achieve the above thing (need a
instance with different behavior) using anonymous inner
classes. The advantage here is, you don't even need to
create a subclass. Create an Anonymous inner class on the
fly, Just override the required behavior, and create an
instance and use it. Here is an example :

I have a class 'A'. By default, its getValue() method
returns whatever the value x holds. But i want to override
this behavior, it should return x+15.

public class AnonymousInnerClass {

public static void main(String[] args) {
A a = new A(10) {
@Override
public int getValue() {
return x + 15;
}
};
System.out.println(a.getValue());// 25 and not 10
}

}

class A {
int x;

public int getValue() {
return x;
}

A(int x) {
this.x = x;
}
}

What is boolean used for?

1094

---

If I only change the return type, does the method become overloaded?

991

---

Can we nested try statements in java?

1150

---

What is a method type?

1040

---

Is oracle charging for java?

1085

---

What is nextint java?

1135

---

Why generics are used in java?

1101

---

Are variables stored in ram?

1067

---

What does a za z0 9 mean?

1193

---

How will you invoke any external process in java?

1170

---

What are the types of java?

1177

---

What do you understand by an io stream?

1106

---

What is the purpose of using bufferedinputstream and bufferedoutputstream classes?

1126

---

Why string is immutable or final in java

1141

---

What is binary tree in java?

1122

---