Interfaces and Polymorphism: Using Multiple Interfaces : Interface « Class Definition « Java Tutorial

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Java Tutorial » Class Definition » Interface 
5.29.7.Interfaces and Polymorphism: Using Multiple InterfacesPrevious/Next
interface ThisInterface {
  public void thisMethod();
}

interface ThatInterface {
  public void thatMethod();
}

class MyClass implements ThisInterface, ThatInterface {
  // Class definition including methods from both interfaces...
  public void thisMethod() {
    System.out.println("this");
  }

  public void thatMethod() {
    System.out.println("that");
  }
}

public class MainClass {
  public static void main(String[] a) {
    MyClass cls = new MyClass();
    cls.thisMethod();
    cls.thatMethod();
  }
}
this
that
5.29.Interface
5.29.1.Interfaces and Abstract Classes
5.29.2.Fields and Methods in an Interface
5.29.3.To implement an interface: use the implements keyword after the class declaration
5.29.4.A Partial Interface Implementation
5.29.5.Extending Interfaces
5.29.6.Interfaces and Multiple Inheritance
5.29.7.Interfaces and Polymorphism: Using Multiple Interfaces
5.29.8.Nesting Classes in an Interface Definition
5.29.9.Encapsulating Constants in a Program
5.29.10.Multiple interfaces
5.29.11.Initializing interface fields with non-constant initializers
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