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Thread: Interface Inheritance (Java Program): meaning of each line of the program?

  1. #1
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    Default Interface Inheritance (Java Program): meaning of each line of the program?

    Hi guys. I'm just preparing for my exam. help me to explain every line of this program:

    interface J {
        int j = 200;
        int j1();
    }
    interface K {
        double k1();
    }
    interface L extends J,K{
        boolean l1();
    }
    class I implements L{
        public boolean l1() {
            return true;
        }
        public int j1() {
            return 4;
        }
        public double k1() {
            return 6.8;
        }
    }
    class InterfaceInheritance{
        public static void main(String[] g){
            I i=new I();
            System.out.println(i.j);
            System.out.println(i.j1());
            System.out.println(i.k1());
            System.out.println(i.l1());
        }
    }

    Result :
    200
    4
    6.8
    true

    And My second question is how to create o class that implements the interface j and k. Then, call the method on a main program in class InterfaceInheritance.

    thanks for helping me prepare for the exam
    Last edited by Kifli; July 7th, 2012 at 08:09 AM.


  2. #2
    Administrator copeg's Avatar
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    Default Re: Interface Inheritance (Java Program): meaning of each line of the program?

    You will learn a lot more if you sit down and study the code, research what you don't understand. Asking someone else to explain this code is a vague request - what don't you understand about it? If you have a specific question, ask it.

    This thread has been cross posted here:

    http://www.java-forums.org/new-java/61255-interface-inheritance-create-class-implements-interface.html

    Although cross posting is allowed, for everyone's benefit, please read:

    Java Programming Forums Cross Posting Rules

    The Problems With Cross Posting

    Last edited by copeg; July 8th, 2012 at 10:27 AM.

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