Extend from static inner class - Java Object Oriented Design

Java examples for Object Oriented Design:Inner Class

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Description

Extend from static inner class

Demo Code

public class Class2 extends Class1 {
    public Class2() {
        ic = new InnerClass2();
    }//from  w w  w. jav a2s.  c  o  m

    static public void main(String[] args) {
        Class2 c2 = new Class2();
        c2.displayStrings();
    }

    protected class InnerClass2 extends InnerClass1 {
        public String getAnotherString() {
            return "InnerClass2 version of getAnotherString invoked";
        }
    }

}

class Class1 {
  protected InnerClass1 ic;

  public Class1() {
      ic = new InnerClass1();
  }

  public void displayStrings() {
      System.out.println(ic.getString() + ".");
      System.out.println(ic.getAnotherString() + ".");
  }

  static public void main(String[] args) {
      Class1 c1 = new Class1();
      c1.displayStrings();
  }

  protected class InnerClass1 {
      public String getString() {
          return "InnerClass1: getString invoked";
      }

      public String getAnotherString() {
          return "InnerClass1: getAnotherString invoked";
      }
  }
}
/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

Result


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