Inner class extending - Java Object Oriented Design

Java examples for Object Oriented Design:Inner Class

  1. HOME
  2. Java
  3. Object Oriented Design
  4. Inner Class

Description

Inner class extending

Demo Code

public class Class2 extends Class1 {
    public Class2() {
        ic = new InnerClass2();
    }/*from w  w  w .  j a  va 2s.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


Related Tutorials