java11-invoking-default-method

Explicitly invoking default method from enclosing interface.

preface

A class (or an interface) can invoke a default method of an interface that is explicitly mentioned in the class's implements clause (or the interface's extends clause) by using the same syntax <InterfaceName>.super.<methodName>

project description

We provide examples with tests for mentioned above features.

• class

  public class CustomClass implements Interface1, Interface2 {
      public String get() {
          return "CustomClass";
      }
  
      String getI1() {
          return Interface1.super.get();
      }
  
      String getI2() {
          return Interface2.super.get();
      }
  }
  

• interfaces

  interface Interface1 {
      default String get() {
          return "Interface1";
      }
  }
  interface Interface2 {
      default String get() {
          return "Interface2";
      }
  }
  

• tests in CustomClassTest