samplearray.java

初期JAVA学习非常有用的资料。帮助深入了解API。特别是Applet。

/*
 * Copyright (c) 1995-1998 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies. Please refer to the file "copyright.html"
 * for further important copyright and licensing information.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */

import java.lang.reflect.*;
import java.awt.*;

class SampleArray {

   public static void main(String[] args) {
      KeyPad target = new KeyPad();
      printArrayNames(target);
   }

   static void printArrayNames(Object target) {
      Class targetClass = target.getClass();
      Field[] publicFields = targetClass.getFields();
      for (int i = 0; i < publicFields.length; i++) {
         String fieldName = publicFields[i].getName();
         Class typeClass = publicFields[i].getType();
         String fieldType = typeClass.getName();
         if (typeClass.isArray()) {
            System.out.println("Name: " + fieldName + 
               ", Type: " + fieldType);
         }
      }
   }
}

class KeyPad {

   public boolean alive;
   public Button power;
   public Button[] letters; 
   public int[] codes;
   public TextField[] rows;
   public boolean[] states;
}