Want help in JLabel

Hai
I am using JLabel with BoxLayout. The text is very large to fit in a single line, the Jframe size is 500x300.
I want the JLabel to align and wrap automatically in two or three lines automatically.
How can I do. I used <Html> for the string but the style is different from other components.
Can anyone throw some light on this.
With Thanks
Kumar

http://forum.java.sun.com/thread.jsp?forum=57&thread=399180 or search forum generally

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Help with JLabel

Hello all. I am fairly new to Java and having a problem setting the text in a JLabel. I am trying to create a calculator program and when the user clicks a button I want that number to appear in a JLabel at the top. I used output.setText("7"); but when I compiled it said <identifier> expected. I will paste the full code below and would appreciate any help. Also, is there a getText function with JLabel, because I need to get what is currently in the output field and concatenate it with the number pressed.
Thanks in advance for your help,
Jeremy
* Write a description of class calculator here.
* @author (Jeremy Kruer)
* @version (11/19/02)
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class calculator extends JFrame
private JButton one, two, three, four, five, six, seven, eight, nine, zero, dec, eq, plus, minus, mult, div;
private JLabel output;
private Container container;
//set up GUI
public calculator()
//Create Title
super("Calculator");
//Set size and make visible
setSize( 400, 400 );
setVisible( true );
container = getContentPane();
container.setLayout( new FlowLayout() );
//set up output
output = new JLabel();
container.add( output );
//set up seven and register its event handler
seven = new JButton( " 7 " );
seven.addActionListener(
//anonymouse inner class
new ActionListener()
//add a seven to the output diplay when clicked
output.setText( "7" );
}//end anonymouse inner class
); //end call to addActionListener
container.add( seven );
//set up eight
eight = new JButton( " 8 " );
container.add( eight );
//set up nine
nine = new JButton( " 9 " );
container.add( nine );
//set up div
div = new JButton( " / " );
container.add( div );
//set up four
four = new JButton( " 4 " );
container.add( four );
//set up five
five = new JButton( " 5 " );
container.add( five );
//set up six
six = new JButton( " 6 " );
container.add( six );
//set up mult
mult = new JButton( " * " );
container.add( mult );
//set up one
one = new JButton( " 1 " );
container.add( one );
//set up two
two = new JButton( " 2 " );
container.add( two );
//set up three
three = new JButton( " 3 " );
container.add( three );
//set up minus
minus = new JButton( " - " );
container.add( minus );
//set up zero
zero = new JButton( " 0 " );
container.add( zero );
//set up dec
dec = new JButton( " . " );
container.add( dec );
//set up eq
eq = new JButton( " = " );
container.add( eq );
//set up plus
plus = new JButton( " +" );
container.add( plus );
//Set size and make visible
setSize( 220, 250 );
setVisible( true );
//execute application
public static void main( String args[] )
calculator application = new calculator();
application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
}

I played with the lauout a bit and added the actionListener:
you will see what you click on !!
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class calcu extends JFrame implements ActionListener
 private JButton one, two, three, four, five, six, seven, eight, nine, zero, dec, eq, plus, minus, mult, div;
 private JLabel output;
public calcu()
 super("Calculator");
 JPanel container = new JPanel();
 container.setLayout(new FlowLayout(FlowLayout.LEFT));
 output = new JLabel("");
 output.setBorder(new MatteBorder(2,2,2,2,Color.gray));
 output.setPreferredSize(new Dimension(1,26));
 getContentPane().setBackground(Color.white);
 getContentPane().add("North",output);
 getContentPane().add("Center",container);
//set up seven and register its event handler
 seven = new JButton(" 7 ");
 container.add(seven);
 seven.addActionListener(this);
//set up eight
 eight = new JButton(" 8 ");
 container.add(eight);
 eight.addActionListener(this);
//set up nine
 nine = new JButton( " 9 " );
 container.add( nine );
 nine.addActionListener(this);
//set up div
 div = new JButton( " / " );
 container.add( div );
 div.addActionListener(this);
//set up four
 four = new JButton( " 4 " );
 container.add( four );
 four.addActionListener(this);
//set up five
 five = new JButton( " 5 " );
 container.add( five );
 five.addActionListener(this);
//set up six
 six = new JButton( " 6 " );
 container.add( six );
 six.addActionListener(this);
//set up mult
 mult = new JButton( " * " );
 container.add( mult );
 mult.addActionListener(this);
//set up one
 one = new JButton( " 1 " );
 container.add( one );
 one.addActionListener(this);
//set up two
 two = new JButton( " 2 " );
 container.add( two );
 two.addActionListener(this);
//set up three
 three = new JButton( " 3 " );
 container.add( three );
 three.addActionListener(this);
//set up minus
 minus = new JButton( " - " );
 container.add( minus );
 minus.addActionListener(this);
//set up zero
 zero = new JButton( " 0 " );
 container.add( zero );
 zero.addActionListener(this);
//set up dec
 dec = new JButton( " . " );
 container.add( dec );
 dec.addActionListener(this);
//set up eq
 eq = new JButton( " = " );
 container.add( eq );
 eq.addActionListener(this);
//set up plus
 plus = new JButton( " +" );
 container.add( plus );
 plus.addActionListener(this);
//Set size and make visible
 setSize(220,250);
 setResizable(false);
 setVisible( true );
public void actionPerformed(ActionEvent ae)
 JButton but = (JButton)ae.getSource();
 output.setText(but.getText());
//execute application
public static void main( String args[] )
 calcu application = new calcu();
 application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
} Noah

Want help with "Could not set up your CS Live account. Try again later."

Hi Folks
I've got an NFR of CS6 and I'm trying to give Adobe Story a shot.
Seems it requires online content and a CS Live account to do anything.
But when I try to create one it dies with the error message:
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Could not set up your CS Live account. Try again later.
Can you help?
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I ran into the same problem you did, Joe. I just realized Story is all online now. Story.Adobe.com

Want help to execute the programm of MethodEntryEvent

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,

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,

I want help in MM Report?

Hi,
Hi I m new in ABAP Programming. Can anyone help me in this.
I have to generate report which shows "the inventory of all the materials of a certain material type at certain locations and the status of such inventory. "
What I want to know is :-
1.What will be the flow of this report? (For eg. which tables I have to declare, then at selection screen which field should be there so and so.)
2.Which tables and fields can be used in this report of MM?
Thanks and Regards,
Gagan

http://sapwiki.iwoars.net/index.php/Tabellen
In german, I'm sorry.
Kind regards
Matthias

Want help in developing my first game in java!!

I want to develop a tetris game in java..can any one help me on this..basically i m new to java programming, i want to know abt the graphical part ..how to make that.. i will code the rest..I want to make an application rather than an applet..

look at the Java2D demo that comes with the JDK
it has lots of source code and just about everything you'll need to do in Tetris (technology wise) is in there, except the game logic.
when you're ready to move into 3D and heavier apps, try this book:
Practical Java Game Programming
http://www.amazon.com/exec/obidos/tg/detail/-/1584503262/102-3570681-1096110?v=glance

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I know abt AJAX theriatically. i want to work on it.would any one help me by sending the required jar files and simple example.I browsed for those in https://bpcatalog.dev.java.net but i can't get all. Plese send me those.

Why not try the open-source Ajax framework ZK ( http://zk1.sourceforge.net )?
You can try the online LIVE DEMO here: ( http://www.potix.com/zkdemo/userguide )

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