Implement multiple interfaces : Interface and Abstract Class « Language Basics « Java





Implement multiple interfaces

/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
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 * pioneering role in inventing and promulgating (and standardizing) the Java 
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 */



interface I1 {
  abstract void test(int i);
}
interface I2 {
  abstract void test(String s);
}

/**
 * To show what happens to the possible conflicts if you 
 * implement multiple interfaces: there are no conflicts.
 * If multiple interfaces have the exact same method, you
 * merely have to implement it.
 * If multiple interfaces have similar methods, you must
 * implement them all.
 * There's still no conflict.
 */
public class MultInterfaces implements I1, I2 {
  public void test(int i) {
    System.out.println("In MultInterfaces.I1.test");
  }
  public void test(String s) {
    System.out.println("In MultInterfaces.I2.test");
  }
  public static void main(String[] a) {
    MultInterfaces t = new MultInterfaces();
    t.test(42);
    t.test("Hello");
  }
}


           
       










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