Source Code Cross Referenced for PlainLauncher.java in  » 6.0-JDK-Modules » j2me » lvmtest » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » lvmtest 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * @(#)PlainLauncher.java	1.4 06/10/10
003:         *
004:         * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved.  
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
006:         *   
007:         * This program is free software; you can redistribute it and/or  
008:         * modify it under the terms of the GNU General Public License version  
009:         * 2 only, as published by the Free Software Foundation.   
010:         *   
011:         * This program is distributed in the hope that it will be useful, but  
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of  
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  
014:         * General Public License version 2 for more details (a copy is  
015:         * included at /legal/license.txt).   
016:         *   
017:         * You should have received a copy of the GNU General Public License  
018:         * version 2 along with this work; if not, write to the Free Software  
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
020:         * 02110-1301 USA   
021:         *   
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa  
023:         * Clara, CA 95054 or visit www.sun.com if you need additional  
024:         * information or have any questions. 
025:         *
026:         */
027:
028:        package lvmtest;
029:
030:        import java.lang.reflect.Method;
031:        import java.lang.reflect.InvocationTargetException;
032:
033:        public class PlainLauncher {
034:
035:            private static final String[] usageMessage = {
036:                    "",
037:                    "usage: <cvm> PlainLauncher [[num-lvm [intrl-msec]] "
038:                            + "MainClass [args...]", "",
039:                    "   ex: <cvm> PlainLauncher 5 1000 HelloWorld", "", };
040:
041:            private static final int DefaultLVMNum = 3;
042:            private static final int DefaultIntvlMSec = -1;
043:            private static final int DefaultTimeOut = -1;
044:
045:            public static void main(String[] args) {
046:
047:                int lvmNum = DefaultLVMNum;
048:                int intvlMSec = DefaultIntvlMSec;
049:                int timeOut = DefaultTimeOut;
050:                int argp = 0;
051:
052:                try {
053:                    lvmNum = Integer.valueOf(args[argp]).intValue();
054:                    argp++;
055:                    intvlMSec = Integer.valueOf(args[argp]).intValue();
056:                    argp++;
057:                    timeOut = Integer.valueOf(args[argp]).intValue();
058:                    argp++;
059:                } catch (NumberFormatException e) {
060:                    /* Non-number argument encountered. Keep going */
061:                } catch (ArrayIndexOutOfBoundsException e) {
062:                    /* There should be at least one non-number argument */
063:                    printUsage();
064:                    System.exit(-1);
065:                }
066:
067:                if (lvmNum <= 0 || args.length <= argp) {
068:                    printUsage();
069:                    System.exit(-1);
070:                }
071:
072:                String className = args[argp++];
073:
074:                String[] as = new String[args.length - argp];
075:                for (int i = 0; i < args.length - argp; i++) {
076:                    as[i] = args[argp + i];
077:                }
078:
079:                for (int i = 0; i < lvmNum; i++) {
080:                    String lvmName = "#" + (i + 1);
081:                    System.out.println("*** Starting Plain launcher " + lvmName
082:                            + ": " + className);
083:
084:                    Launcher la = new Launcher(className, as, lvmName);
085:                    la.start();
086:
087:                    if (intvlMSec >= 0) {
088:                        try {
089:                            Thread.sleep(intvlMSec);
090:                        } catch (InterruptedException e) {
091:                            System.err.println("Exception caught in sleep(): "
092:                                    + e);
093:                        }
094:                    }
095:                }
096:
097:                if (timeOut >= 0) {
098:                    System.out.println("*** Time-out " + timeOut
099:                            + " is ignored");
100:                }
101:            }
102:
103:            private static class Launcher extends Thread {
104:                private String className;
105:                private String[] args;
106:                private String name;
107:
108:                Launcher(String cn, String[] as, String n) {
109:                    className = cn;
110:                    args = as;
111:                    name = n;
112:                }
113:
114:                public void run() {
115:                    try {
116:                        Class cls = Class.forName(className);
117:                        Class[] argClses = { String[].class };
118:                        Method mainMethod = cls.getMethod("main", argClses);
119:                        Object[] argObjs = { args };
120:                        mainMethod.invoke(null, argObjs);
121:                    } catch (InvocationTargetException ite) {
122:                        ite.getTargetException().printStackTrace();
123:                    } catch (Exception e) {
124:                        e.printStackTrace();
125:                    }
126:                }
127:            }
128:
129:            private static void printUsage() {
130:                for (int i = 0; i < usageMessage.length; i++) {
131:                    System.err.println(usageMessage[i]);
132:                }
133:            }
134:        }
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