Method overriding in java
Method overriding is to call the same method in child and parents class.
The parents class and child class also have similar method "show()". If I called the "show()" child class method will be called.
Example-1
class A
{
public void show()
{
System.out.println("In Class A");
}
}
class B extends A
{
public void show()
{
System.out.println("In Class B");
}
}
public class Main
{
public static void main(String[] args)
{
B obj = new B();
obj.show();
}
}
Output
In Class B
If you want call parents class method in overriding, you can be use super keyword.
Example-2
class A
{
public void show()
{
System.out.println("In Class A");
}
}
class B extends A
{
public void show()
{
super.show();
System.out.println("In Class B");
}
}
public class Main
{
public static void main(String[] args)
{
B obj = new B();
obj.show();
}
}
Output
In Class A In Class B
Example-3
class A
{
void show()
{
System.out.println("In Class A");
}
}
class B extends A
{
public void show()
{
System.out.println("In Class B");
super.show();
}
}
public class Main
{
public static void main(String[] args)
{
B obj = new B();
obj.show();
}
}
Output
In Class B In Class A