Java Inheritance example Program

public class Demo {

public static void main(String[] args) {
// TODO Auto-generated method stub

SubClass obj = new SubClass();

obj.display();

}

}

public class First {

protected String str;

First() {

str = "Java ";

}

}

 

class SubClass extends First {

SubClass() {

str = str.concat("Is My World ...!!!");

}

void display()

{

System.out.println(str);

}

}

output:-

Java Is My World ...!!!