Want help to execute the programm of MethodEntryEvent

Question

Hi,
I am trying to develop a programm for automatic logging in the programme. I took the hepl of java API and the Google site for searching some programms and successed also. but while running these sample programms i am getting classNotFound exception and some other exceptions also. i executed the programm Seq.java downloaded from the site http://search.cpan.org/src/PHILCROW/UML-Sequence-0.05/java/Seq.java. i am not able to understand how to execute it. what ever i tried its giving the same output whatever defined in the System.err() in the file. but it should display the corrosponding class details for which i need to see the output.
can anyone help me in this regard and tell me the process to execute the programm.
i took another e.g. trace example, which (in J2SE 1.4.x or 5.x) will be found in $JAVA_HOME/demo/jpda/examples.jar and unpacking it by
jar -xvf $JAVA_HOME/demo/jpda/examples.jar i found the
com/sun/tools/example/trace/Trace.java
when i tried to execute it to see the output for some other programm i got the following exceptions,
-- VM Started --
====== main ======
main -- DateExample
| Exception: instance of java.lang.ClassNotFoundException(id=97) catch: java.lang.ClassLoader:286
| | | | | | | | | | | | | | | | | | | | Exception: instance of java.lang.ClassNotFoundException(id=98) catch: java.lang.ClassLoader:286
| | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.lang.ClassNotFoundException(id=98) catch: java.lang.ClassLoader:286
| | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=99) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=99) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=100) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=100) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=101) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=101) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.lang.ClassNotFoundException(id=102) catch: java.util.ResourceBundle:1074
| | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.lang.ClassNotFoundException(id=102) catch: java.util.ResourceBundle:1074
| | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=105) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=105) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=106) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=106) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=115) catch: null
| | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=118) catch: null
====== main end ======
-- The application exited --
i execute this programm i used the command as
java Trace -output trace.log DateExample
where trace.log is output file and DateExample is the java file.
Can any one help me in this regard to execute the programms and can give me a detailed solution procedure.
can anyone suggest me any other programm for auto exit and entry display for classes or methods with detailed execution steps.
Thanks,

Answer 1

Hi,
i tried by setting the class path in the environment variables.
still i am getting the same exceptions. i m sending the files on which i m working and requesting to give some solution. the files are
// Trace.java
import com.sun.jdi.VirtualMachine;
import com.sun.jdi.Bootstrap;
import com.sun.jdi.connect.*;
import java.util.Map;
import java.util.List;
import java.util.Iterator;
import java.io.PrintWriter;
import java.io.FileWriter;
import java.io.IOException;
* This program traces the execution of another program.
* See "java Trace -help".
* It is a simple example of the use of the Java Debug Interface.
* @version @(#) Trace.java 1.4 03/01/23 17:55:38
* @author Robert Field
public class Trace {
// Running remote VM
private final VirtualMachine vm;
// Thread transferring remote error stream to our error stream
private Thread errThread = null;
// Thread transferring remote output stream to our output stream
private Thread outThread = null;
// Mode for tracing the Trace program (default= 0 off)
private int debugTraceMode = 0;
// Do we want to watch assignments to fields
private boolean watchFields = false;
// Class patterns for which we don't want events
private String[] excludes = {"java.*", "javax.*", "sun.*",
"com.sun.*"};
* main
public static void main(String[] args) {
//new Trace(args);
//DateExample d = new DateExample();
//String[] arg = {(new DateExample().toString())};
//String[] arg = {"E:/java_progs/classLoader/project logging/com/sun/tools/example/trace/DateExample.java"};
//d.dateDisplay();
new Trace(args);
* Parse the command line arguments.
* Launch target VM.
* Generate the trace.
Trace(String[] args) {
System.out.println("entered into the method Trace(String[] args)");
PrintWriter writer = new PrintWriter(System.out);
System.out.println("Printer object created.....");
int inx;
for (inx = 0; inx < args.length; ++inx) {
System.out.println("inside for loop args.length is "+args.length+" and the data is "+args[inx]);
String arg = args[inx];
if (arg.charAt(0) != '-') {
break;
if (arg.equals("-output")) {
System.out.println("inside args== -output");
try {
writer = new PrintWriter(new FileWriter(args[++inx]));
System.out.println("writer object createed....");
} catch (IOException exc) {
System.err.println("Cannot open output file: " + args[inx]
+ " - " + exc);
System.exit(1);
} else if (arg.equals("-all")) {
System.out.println("inside args== -all");
excludes = new String[0];
} else if (arg.equals("-fields")) {
System.out.println("inside args== -fields");
watchFields = true;
} else if (arg.equals("-dbgtrace")) {
System.out.println("inside args== -bdgtrace");
debugTraceMode = Integer.parseInt(args[++inx]);
System.out.println("inside args== -bdgtrace the debugTraceMode is "+debugTraceMode);
} else if (arg.equals("-help")) {
System.out.println("inside args== -help called usage();");
usage();
System.exit(0);
} else {
System.err.println("No option: " + arg);
usage();
System.exit(1);
System.out.println("the index is "+inx+" the args.length is "+args.length);
if (inx >= args.length) {
System.err.println("<class> missing");
usage();
System.exit(1);
StringBuffer sb = new StringBuffer();
sb.append(args[inx]);
for (++inx; inx < args.length; ++inx) {
sb.append(' ');
sb.append(args[inx]);
System.out.println("the string buffer contains \n "+sb);
vm = launchTarget(sb.toString());
generateTrace(writer);
System.out.println("after generateTrace(writer)");
* Generate the trace.
* Enable events, start thread to display events,
* start threads to forward remote error and output streams,
* resume the remote VM, wait for the final event, and shutdown.
void generateTrace(PrintWriter writer) {
System.out.println("inside generateTrace(PrintWriter writer) the debugTraceMode is "+debugTraceMode);
vm.setDebugTraceMode(debugTraceMode);
EventThread eventThread = new EventThread(vm, excludes, writer);
eventThread.setEventRequests(watchFields);
System.out.println("inside generateTrace(PrintWriter writer) the eventThread.setEventRequests(watchFields) is ");
eventThread.start();
redirectOutput();
vm.resume();
// Shutdown begins when event thread terminates
try {
eventThread.join();
errThread.join(); // Make sure output is forwarded
outThread.join(); // before we exit
} catch (InterruptedException exc) {
// we don't interrupt
writer.close();
System.out.println("the writer is closed....");
* Launch target VM.
* Forward target's output and error.
VirtualMachine launchTarget(String mainArgs) {
System.out.println("inside VirtualMachine launchTarget(String mainArgs) "+mainArgs);
LaunchingConnector connector = findLaunchingConnector();
System.out.println("Lunching connector found "+connector);
Map arguments = connectorArguments(connector, mainArgs);
try {
return connector.launch(arguments);
} catch (IOException exc) {
throw new Error("Unable to launch target VM: " + exc);
} catch (IllegalConnectorArgumentsException exc) {
throw new Error("Internal error: " + exc);
} catch (VMStartException exc) {
throw new Error("Target VM failed to initialize: " +
exc.getMessage());
void redirectOutput() {
Process process = vm.process();
System.out.println("inside redirectOutput() after getting the virtual m/c process");
// Copy target's output and error to our output and error.
errThread = new StreamRedirectThread("error reader",
process.getErrorStream(),
System.err);
outThread = new StreamRedirectThread("output reader",
process.getInputStream(),
System.out);
errThread.start();
outThread.start();
* Find a com.sun.jdi.CommandLineLaunch connector
LaunchingConnector findLaunchingConnector() {
List connectors = Bootstrap.virtualMachineManager().allConnectors();
System.out.println("inside redirectOutput() after getting the connectors list");
Iterator iter = connectors.iterator();
while (iter.hasNext()) {
Connector connector = (Connector)iter.next();
System.out.println("inside while (iter.hasNext()) after getting the connector objects from itterator");
if (connector.name().equals("com.sun.jdi.CommandLineLaunch")) {
System.out.println("inside if (connector.name().equals('com.sun.jdi.CommandLineLaunch'))");
return (LaunchingConnector)connector;
throw new Error("No launching connector");
* Return the launching connector's arguments.
Map connectorArguments(LaunchingConnector connector, String mainArgs) {
System.out.println("Map connectorArguments(LaunchingConnector connector, String mainArgs) the mainArgs is "+mainArgs);
Map arguments = connector.defaultArguments();
Connector.Argument mainArg =
(Connector.Argument)arguments.get("main");
if (mainArg == null) {
System.out.println("inside the mainArg==null ");
throw new Error("Bad launching connector");
mainArg.setValue(mainArgs);
System.out.println("the mainArg is "+mainArg);
if (watchFields) {
System.out.println("inside the if (watchFields)********");
// We need a VM that supports watchpoints
Connector.Argument optionArg =
(Connector.Argument)arguments.get("options");
if (optionArg == null) {
throw new Error("Bad launching connector");
System.out.println("inside the if (watchFields)the optionArg is "+optionArg);
optionArg.setValue("-classic");
System.out.println("optionArg.getValue() is ");
return arguments;
* Print command line usage help
void usage() {
System.out.println("inside usage()");
System.err.println("Usage: java Trace <options> <class> <args>");
System.err.println("<options> are:");
System.err.println(
" -output <filename> Output trace to <filename>");
System.err.println(
" -all Include system classes in output");
System.err.println(
" -help Print this help message");
System.err.println("<class> is the program to trace");
System.err.println("<args> are the arguments to <class>");
// DateExample.java
import java.util.Date;
import java.text.DateFormat;
import java.util.Calendar;
import java.text.ParseException;
import java.text.SimpleDateFormat;
public class DateExample {
public static void main(String[] args) {
Date a = new Date();
System.out.println("Today is : "+a);
Calendar ca= Calendar.getInstance();
ca.set(a.getYear(),a.getMonth(),a.getDate());
ca.add(Calendar.DATE,1);
DateFormat df1 = DateFormat.getDateInstance(DateFormat.SHORT);
String s1 = df1.format(ca.getTime());
System.out.println("(SHORT) Today is + 1 :" + s1);
//java.sql.Date s = new java.sql.Date(2005,6,1);
//System.out.println("Date from sql is : "+s);
Date a1 = new Date(2005,06,01);
System.out.println("Today is a1 : "+a1);
java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat("MM-dd-yyyy HH:mm:ss");
System.out.println("After format :"+formatter.format(a1));
System.out.println("After format :"+formatter.format(new Date(s1)));
java.text.SimpleDateFormat formatter1 = new java.text.SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
System.out.println("After format :"+formatter1.format(a1));
// EventThread.java
import com.sun.jdi.*;
import com.sun.jdi.request.*;
import com.sun.jdi.event.*;
import java.util.*;
import java.io.PrintWriter;
* This class processes incoming JDI events and displays them
* @version @(#) EventThread.java 1.4 03/01/23 17:55:38
* @author Robert Field
public class EventThread extends Thread {
private final VirtualMachine vm; // Running VM
private final String[] excludes; // Packages to exclude
private final PrintWriter writer; // Where output goes
static String nextBaseIndent = ""; // Starting indent for next thread
private boolean connected = true; // Connected to VM
private boolean vmDied = true; // VMDeath occurred
// Maps ThreadReference to ThreadTrace instances
private Map traceMap = new HashMap();
EventThread(VirtualMachine vm, String[] excludes, PrintWriter writer) {
super("event-handler");
this.vm = vm;
this.excludes = excludes;
this.writer = writer;
System.out.println("inside EventThread(VirtualMachine vm, String[] excludes, PrintWriter writer) ");
* Run the event handling thread.
* As long as we are connected, get event sets off
* the queue and dispatch the events within them.
public void run() {
System.out.println("inside run() ");
EventQueue queue = vm.eventQueue();
while (connected) {
System.out.println("inside while (connected) ");
try {
EventSet eventSet = queue.remove();
EventIterator it = eventSet.eventIterator();
System.out.println("got EventSet and EventIterator *** ");
while (it.hasNext()) {
System.out.println("inside while (it.hasNext())");
handleEvent(it.nextEvent());
eventSet.resume();
System.out.println("event is resumed ***** ");
} catch (InterruptedException exc) {
// Ignore
} catch (VMDisconnectedException discExc) {
handleDisconnectedException();
break;
* Create the desired event requests, and enable
* them so that we will get events.
* @param excludes Class patterns for which we don't want events
* @param watchFields Do we want to watch assignments to fields
void setEventRequests(boolean watchFields) {
System.out.println("inside setEventRequests(boolean watchFields) ");
EventRequestManager mgr = vm.eventRequestManager();
// want all exceptions
ExceptionRequest excReq = mgr.createExceptionRequest(null,
true, true);
// suspend so we can step
excReq.setSuspendPolicy(EventRequest.SUSPEND_ALL);
excReq.enable();
MethodEntryRequest menr = mgr.createMethodEntryRequest();
for (int i=0; i<excludes.length; ++i) {
System.out.println("inside for (int i=0; i><excludes.length; ++i) for createMethodEntryRequest() ");
menr.addClassExclusionFilter(excludes);
menr.setSuspendPolicy(EventRequest.SUSPEND_NONE);
menr.enable();
MethodExitRequest mexr = mgr.createMethodExitRequest();
for (int i=0; i><excludes.length; ++i) {
System.out.println("inside for (int i=0; i><excludes.length; ++i) for createMethodExitRequest() ");
mexr.addClassExclusionFilter(excludes);
mexr.setSuspendPolicy(EventRequest.SUSPEND_NONE);
mexr.enable();
ThreadDeathRequest tdr = mgr.createThreadDeathRequest();
// Make sure we sync on thread death
tdr.setSuspendPolicy(EventRequest.SUSPEND_ALL);
tdr.enable();
if (watchFields) {
System.out.println("inside if (watchFields) ************** ");
ClassPrepareRequest cpr = mgr.createClassPrepareRequest();
for (int i=0; i><excludes.length; ++i) {
System.out.println("inside for (int i=0; i><excludes.length; ++i) the excludes.length is ************** "+excludes.length);
cpr.addClassExclusionFilter(excludes);
cpr.setSuspendPolicy(EventRequest.SUSPEND_ALL);
cpr.enable();
* This class keeps context on events in one thread.
* In this implementation, context is the indentation prefix.
class ThreadTrace {
final ThreadReference thread;
final String baseIndent;
static final String threadDelta = " ";
StringBuffer indent;
ThreadTrace(ThreadReference thread) {
System.out.println("inside ThreadTrace(ThreadReference thread)");
this.thread = thread;
this.baseIndent = nextBaseIndent;
indent = new StringBuffer(baseIndent);
nextBaseIndent += threadDelta;
println("====== " + thread.name() + " ======");
private void println(String str) {
System.out.println("inside void println(String str)");
writer.print(indent);
writer.println(str);
void methodEntryEvent(MethodEntryEvent event) {
System.out.println("inside methodEntryEvent(MethodEntryEvent event)");
println(event.method().name() + " -- "
+ event.method().declaringType().name());
indent.append("| ");
void methodExitEvent(MethodExitEvent event) {
System.out.println("inside methodExitEvent(MethodExitEvent event)");
indent.setLength(indent.length()-2);
void fieldWatchEvent(ModificationWatchpointEvent event) {
System.out.println("inside fieldWatchEvent(ModificationWatchpointEvent event)");
Field field = event.field();
Value value = event.valueToBe();
println(" " + field.name() + " = " + value);
void exceptionEvent(ExceptionEvent event) {
System.out.println("inside exceptionEvent(ExceptionEvent event) ");
println("Exception: " + event.exception() +
" catch: " + event.catchLocation());
// Step to the catch
EventRequestManager mgr = vm.eventRequestManager();
StepRequest req = mgr.createStepRequest(thread,
StepRequest.STEP_MIN,
StepRequest.STEP_INTO);
System.out.println("stepRequest is created "+req);
req.addCountFilter(1); // next step only
req.setSuspendPolicy(EventRequest.SUSPEND_ALL);
req.enable();
// Step to exception catch
void stepEvent(StepEvent event) {
System.out.println("inside stepEvent(StepEvent event) ");
// Adjust call depth
int cnt = 0;
indent = new StringBuffer(baseIndent);
try {
cnt = thread.frameCount();
System.out.println("inside try cnt is "+cnt);
} catch (IncompatibleThreadStateException exc) {
while (cnt-- > 0) {
System.out.println("inside while indent is "+indent);
indent.append("| ");
EventRequestManager mgr = vm.eventRequestManager();
mgr.deleteEventRequest(event.request());
void threadDeathEvent(ThreadDeathEvent event) {
System.out.println("inside threadDeathEvent(ThreadDeathEvent event) ");
indent = new StringBuffer(baseIndent);
println("====== " + thread.name() + " end ======");
* Returns the ThreadTrace instance for the specified thread,
* creating one if needed.
ThreadTrace threadTrace(ThreadReference thread) {
ThreadTrace trace = (ThreadTrace)traceMap.get(thread);
System.out.println("inside ThreadTrace threadTrace(ThreadReference thread) trace is "+trace);
if (trace == null) {
trace = new ThreadTrace(thread);
traceMap.put(thread, trace);
return trace;
* Dispatch incoming events
private void handleEvent(Event event) {
System.out.println("inside handleEvent(Event event) ");
if (event instanceof ExceptionEvent) {
System.out.println("inside handleEvent(Event event) in ExceptionEvent ");
exceptionEvent((ExceptionEvent)event);
} else if (event instanceof ModificationWatchpointEvent) {
System.out.println("inside handleEvent(Event event) in ModificationWatchpointEvent ");
fieldWatchEvent((ModificationWatchpointEvent)event);
} else if (event instanceof MethodEntryEvent) {
System.out.println("inside handleEvent(Event event) in MethodEntryEvent ");
methodEntryEvent((MethodEntryEvent)event);
} else if (event instanceof MethodExitEvent) {
System.out.println("inside handleEvent(Event event) in MethodExitEvent ");
methodExitEvent((MethodExitEvent)event);
} else if (event instanceof StepEvent) {
System.out.println("inside handleEvent(Event event) in StepEvent ");
stepEvent((StepEvent)event);
} else if (event instanceof ThreadDeathEvent) {
System.out.println("inside handleEvent(Event event) in ThreadDeathEvent ");
threadDeathEvent((ThreadDeathEvent)event);
} else if (event instanceof ClassPrepareEvent) {
System.out.println("inside handleEvent(Event event) in ClassPrepareEvent ");
classPrepareEvent((ClassPrepareEvent)event);
} else if (event instanceof VMStartEvent) {
System.out.println("inside handleEvent(Event event) in VMStartEvent ");
vmStartEvent((VMStartEvent)event);
} else if (event instanceof VMDeathEvent) {
System.out.println("inside handleEvent(Event event) in VMDeathEvent ");
vmDeathEvent((VMDeathEvent)event);
} else if (event instanceof VMDisconnectEvent) {
System.out.println("inside handleEvent(Event event) in VMDisconnectEvent ");
vmDisconnectEvent((VMDisconnectEvent)event);
} else {
System.out.println("inside handleEvent(Event event) in else unexcepted type ");
throw new Error("Unexpected event type");
* A VMDisconnectedException has happened while dealing with
* another event. We need to flush the event queue, dealing only
* with exit events (VMDeath, VMDisconnect) so that we terminate
* correctly.
synchronized void handleDisconnectedException() {
System.out.println("inside handleDisconnectedException() ");
EventQueue queue = vm.eventQueue();
while (connected) {
System.out.println("inside handleDisconnectedException() in while (connected) ");
try {
EventSet eventSet = queue.remove();
EventIterator iter = eventSet.eventIterator();
System.out.println("inside handleDisconnectedException() got EventSet & EventIterator ");
while (iter.hasNext()) {
System.out.println("inside handleDisconnectedException() in while (iter.hasNext()) ");
Event event = iter.nextEvent();
if (event instanceof VMDeathEvent) {
System.out.println("inside handleDisconnectedException() in if ");
vmDeathEvent((VMDeathEvent)event);
} else if (event instanceof VMDisconnectEvent) {
System.out.println("inside handleDisconnectedException() in else ");
vmDisconnectEvent((VMDisconnectEvent)event);
eventSet.resume(); // Resume the VM
} catch (InterruptedException exc) {
// ignore
private void vmStartEvent(VMStartEvent event) {
System.out.println("inside vmStartEvent(VMStartEvent event)**** ");
writer.println("-- VM Started --");
// Forward event for thread specific processing
private void methodEntryEvent(MethodEntryEvent event) {
System.out.println("inside methodEntryEvent(MethodEntryEvent event)****** ");
threadTrace(event.thread()).methodEntryEvent(event);
// Forward event for thread specific processing
private void methodExitEvent(MethodExitEvent event) {
System.out.println("inside methodExitEvent(MethodExitEvent event)****** ");
threadTrace(event.thread()).methodExitEvent(event);
// Forward event for thread specific processing
private void stepEvent(StepEvent event) {
System.out.println("inside stepEvent(StepEvent event)****** ");
threadTrace(event.thread()).stepEvent(event);
// Forward event for thread specific processing
private void fieldWatchEvent(ModificationWatchpointEvent event) {
System.out.println("inside fieldWatchEvent(ModificationWatchpointEvent event)***** ");
threadTrace(event.thread()).fieldWatchEvent(event);
void threadDeathEvent(ThreadDeathEvent event) {
System.out.println("inside threadDeathEvent(ThreadDeathEvent event)****** ");
ThreadTrace trace = (ThreadTrace)traceMap.get(event.thread());
if (trace != null) { // only want threads we care about
trace.threadDeathEvent(event); // Forward event
* A new class has been loaded.
* Set watchpoints on each of its fields
private void classPrepareEvent(ClassPrepareEvent event) {
System.out.println("inside classPrepareEvent(ClassPrepareEvent event)****** ");
EventRequestManager mgr = vm.eventRequestManager();
List fields = event.referenceType().visibleFields();
for (Iterator it = fields.iterator(); it.hasNext(); ) {
System.out.println("inside classPrepareEvent(ClassPrepareEvent event) inside for loop Iterator ****** ");
Field field = (Field)it.next();
ModificationWatchpointRequest req =
mgr.createModificationWatchpointRequest(field);
for (int i=0; i<excludes.length; ++i) {
System.out.println("inside classPrepareEvent(ClassPrepareEvent event) inside for loop int ****** ");
req.addClassExclusionFilter(excludes);
req.setSuspendPolicy(EventRequest.SUSPEND_NONE);
req.enable();
private void exceptionEvent(ExceptionEvent event) {
System.out.println("inside exceptionEvent(ExceptionEvent event)****** ");
ThreadTrace trace = (ThreadTrace)traceMap.get(event.thread());
if (trace != null) { // only want threads we care about
trace.exceptionEvent(event); // Forward event
public void vmDeathEvent(VMDeathEvent event) {
System.out.println("inside vmDeathEvent(VMDeathEvent event)****** ");
vmDied = true;
writer.println("-- The application exited --");
public void vmDisconnectEvent(VMDisconnectEvent event) {
System.out.println("inside vmDisconnectEvent(VMDisconnectEvent event)****** ");
connected = false;
if (!vmDied) {
System.out.println("inside vmDisconnectEvent(VMDisconnectEvent event)in if loop ****** ");
writer.println("-- The application has been disconnected --");
// StreamRedirectThread.java
import java.io.*;
* StreamRedirectThread is a thread which copies it's input to
* it's output and terminates when it completes.
* @version @(#) StreamRedirectThread.java 1.4 03/01/23 17:55:38
* @author Robert Field
class StreamRedirectThread extends Thread {
private final Reader in;
private final Writer out;
private static final int BUFFER_SIZE = 2048;
* Set up for copy.
* @param name Name of the thread
* @param in Stream to copy from
* @param out Stream to copy to
StreamRedirectThread(String name, InputStream in, OutputStream out) {
super(name);
this.in = new InputStreamReader(in);
this.out = new OutputStreamWriter(out);
setPriority(Thread.MAX_PRIORITY-1);
System.out.println("inside StreamRedirectThread(String name, InputStream in, OutputStream out) ****** ");
* Copy.
public void run() {
System.out.println("inside StreamRedirectThread class in run() ****** ");
try {
char[] cbuf = new char[BUFFER_SIZE];
int count;
while ((count = in.read(cbuf, 0, BUFFER_SIZE)) >= 0) {
System.out.println("inside run() in while loop the count is ****** "+count);
out.write(cbuf, 0, count);
out.flush();
} catch(IOException exc) {
System.err.println("Child I/O Transfer - " + exc);
by using these files i m trying to trace the execution of DateExample.java through the Trace.java by using the command
java Trace -output trace.log DateExample
by executiing i m getting the exceptions in the output file trace.log
-- VM Started --
====== main ======
main -- DateExample
| Exception: instance of java.lang.ClassNotFoundException(id=97) catch: java.lang.ClassLoader:286
| | | | | | | | | | | | | | | | | | | | Exception: instance of java.lang.ClassNotFoundException(id=99) catch: java.lang.ClassLoader:286
| | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.lang.ClassNotFoundException(id=99) catch: java.lang.ClassLoader:286
| | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=100) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=100) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=101) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=101) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=102) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=102) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.util.zip.ZipException(id=104) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.util.zip.ZipException(id=104) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.lang.ClassNotFoundException(id=105) catch: java.util.ResourceBundle:1074
| | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.lang.ClassNotFoundException(id=105) catch: java.util.ResourceBundle:1074
| | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=108) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=108) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=109) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=109) catch: sun.misc.URLClassPath:293
| | | | | | | | | | | | | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=118) catch: null
| | | | | | | | | | | | | | Exception: instance of java.io.FileNotFoundException(id=121) catch: null
====== main end ======
-- The application exited --
Could any one help me in this regard to execute the programm.
Could any one help to show the execution of the Seq.java downloaded from the site http://search.cpan.org/src/PHILCROW/UML-Sequence-0.05/java/Seq.java, what i mentioned in my previous mail.
thanks,