Java11 month 9th the hands of the brain

Java hands-on brain

Write your own code to test the following features (hands-on brain):

In subclasses, to invoke methods overridden in a parent class, you can use the Super keyword.

Program Source code:

Package Yanzhengjicheng;

Class add{

public int Jiafa (int a,int b) {

int s;

S=a+b;

return s;

}

}

Class Add1 extends add{

public int Jiafa (int a,int b) {System.out.println ("Call the parent class" +super.jiafa (3,4));

int s;

S=a+b;

return s;

}

}

public class Testinter {

public static void Main (String args[]) {

Add1 C = new Add1 ();

System.out.println ("Call subclass" +c.jiafa (3,4));

}

}

(2) Program operation result diagram:

Java11 month 9th the hands of the brain