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This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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The source code

/*
** Copyright (c) 1998 by Timothy Gerard Endres
** <mailto:time@ice.com>  
** 
** This program is free software.
** 
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included	with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE. 
** 
*/

package com.ice.util;

import java.io.*;


public class
DebugUtilities
	{
	public static void
	printClassHierarchy(
			Class aClass, PrintWriter writer, String prefix )
		{
		String subPrefix = "-->";

		for ( int i = 0 ; ; ++i )
			{
			writer.println
				( prefix + " " + subPrefix
					+ " " + aClass.getName() );

			aClass = aClass.getSuperclass();

			if ( aClass == Object.class )
				break;

			subPrefix = "--" + subPrefix;
			}
		}

	public static void
	printContainerComponents(
			java.awt.Container cont, PrintWriter writer,
			String prefix, boolean recurse )
		{
		java.awt.Component[] comps = cont.getComponents();

		if ( comps.length < 1 )
			{
			writer.println
				( prefix + "Contains no components." );
			}

		for ( int i = 0 ; i < comps.length ; ++i )
			{
			DebugUtilities.printClassHierarchy
				( comps[i].getClass(), writer,
					prefix + "[" +i+ "]" );

			if ( recurse )
				{
				Class c = java.awt.Container.class;
				if ( c.isAssignableFrom( comps[i].getClass() ) )
					{
					DebugUtilities.printContainerComponents(
						(java.awt.Container)comps[i], writer,
							(prefix + "[" +i+ "] "), recurse );
					}
				}
			}
		}

	}

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