/* * Copyright (c) 1995, 2000, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.misc; /** * MessageUtils: miscellaneous utilities for handling error and status * properties and messages. * * @author Herb Jellinek */ public class MessageUtils {    // can instantiate it for to allow less verbose use - via instance    // instead of classname     public MessageUtils() { }     public static String subst(String patt, String arg) {        String args[] = { arg };        return subst(patt, args);    }     public static String subst(String patt, String arg1, String arg2) {        String args[] = { arg1, arg2 };        return subst(patt, args);    }     public static String subst(String patt, String arg1, String arg2,                               String arg3) {        String args[] = { arg1, arg2, arg3 };        return subst(patt, args);    }     public static String subst(String patt, String args[]) {        StringBuffer result = new StringBuffer();        int len = patt.length();        for (int i = 0; i >= 0 && i < len; i++) {            char ch = patt.charAt(i);            if (ch == '%') {                if (i != len) {                    int index = Character.digit(patt.charAt(i + 1), 10);                    if (index == -1) {                        result.append(patt.charAt(i + 1));                        i++;                    } else if (index < args.length) {                        result.append(args[index]);                        i++;                    }                }            } else {                result.append(ch);            }        }        return result.toString();    }     public static String substProp(String propName, String arg) {        return subst(System.getProperty(propName), arg);    }     public static String substProp(String propName, String arg1, String arg2) {        return subst(System.getProperty(propName), arg1, arg2);    }     public static String substProp(String propName, String arg1, String arg2,                                   String arg3) {        return subst(System.getProperty(propName), arg1, arg2, arg3);    }     /**     *  Print a message directly to stderr, bypassing all the     *  character conversion methods.     *  @param msg   message to print     */    public static native void toStderr(String msg);     /**     *  Print a message directly to stdout, bypassing all the     *  character conversion methods.     *  @param msg   message to print     */    public static native void toStdout(String msg);      // Short forms of the above     public static void err(String s) {        toStderr(s + "\n");    }     public static void out(String s) {        toStdout(s + "\n");    }     // Print a stack trace to stderr    //    public static void where() {        Throwable t = new Throwable();        StackTraceElement[] es = t.getStackTrace();        for (int i = 1; i < es.length; i++)            toStderr("\t" + es[i].toString() + "\n");    } }