/** Copyright (c) 1996-1999 Bill Venners. All Rights Reserved.** This Java source file is part of the Interactive Illustrations Web* Site, which is delivered in the applets directory of the CD-ROM* that accompanies the book "Inside the Java 2 Virtual Machine" by Bill* Venners, published by McGraw-Hill, 1999, ISBN: 0-07-135093-4. This* source file is provided for evaluation purposes only, but you can* redistribute it under certain conditions, described in the full* copyright notice below.** Full Copyright Notice:** All the web pages and Java applets delivered in the applets* directory of the CD-ROM, consisting of ".html," ".gif," ".class,"* and ".java" files, are copyrighted (c) 1996-1999 by Bill* Venners, and all rights are reserved.  This material may be copied* and placed on any commercial or non-commercial web server on any* network (including the internet) provided that the following* guidelines are followed:** a. All the web pages and Java Applets (".html," ".gif," ".class,"* and ".java" files), including the source code, that are delivered* in the applets directory of the CD-ROM that* accompanies the book must be published together on the same web* site.** b. All the web pages and Java Applets (".html," ".gif," ".class,"* and ".java" files) must be published "as is" and may not be altered* in any way.** c. All use and access to this web site must be free, and no fees* can be charged to view these materials, unless express written* permission is obtained from Bill Venners.** d. The web pages and Java Applets may not be distributed on any* media, other than a web server on a network, and may not accompany* any book or publication.** BILL VENNERS 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 PARTICULAR PURPOSE, OR NON-INFRINGEMENT.  BILL VENNERS* SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY A LICENSEE AS A* RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS* DERIVATIVES.*/package COM.artima.jvmsim;/*** This class encapsulates some utility methods that* print a hex value filled with leading zeros.** @author  Bill Venners*/class HexString {    private final String hexChar = "0123456789abcdef";    private StringBuffer buf = new StringBuffer();    void Convert(int val, int maxNibblesToConvert) {        buf.setLength(0);        int v = val;        for (int i = 0; i < maxNibblesToConvert; ++i) {            if (v == 0) {                if (i == 0) {                    buf.insert(0, '0');                }                break;            }            // Get lowest nibble            int remainder = v & 0xf;            // Convert nibble to a character and insert it into the beginning of the string            buf.insert(0, hexChar.charAt(remainder));            // Shift the int to the right four bits            v >>>= 4;        }    }    HexString(int val, int minWidth) {        Convert(val, minWidth);        int charsNeeded = minWidth - buf.length();        for (int i = 0; i < charsNeeded; ++i) {            buf.insert(0, '0');        }    }    public String getString() {        return buf.toString();    }}