[DrJava] [ drjava-Bugs-1936420 ] Error occured in my DrJava program

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Bugs item #1936420, was opened at 2008-04-06 23:27
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Zi Yi Chen (keitarr)
Assigned to: Nobody/Anonymous (nobody)
Summary: Error occured in my DrJava program

Initial Comment:
I'm sorry for not explaining this in detail. I'm doing an school assignment which is to write a code with this program. It works fine in the last few months. But somehow there's an error came out today. And now I cannot run any code I wrote. Please tell me how to fix this problem as soon as possbile. My assignment is due pretty soon!!! Thank you!

Here's what came out on my screen:

java.lang.NullPointerException
	at edu.rice.cs.drjava.ui.MainFrame$ModelListener.interactionEnded(MainFrame.java:7453)
	at edu.rice.cs.drjava.ui.MainFrame$ModelListener$25.run(MainFrame.java:7750)
	at edu.rice.cs.util.swing.Utilities.invokeLater(Utilities.java:62)
	at edu.rice.cs.drjava.ui.MainFrame$ModelListener.interpreterReady(MainFrame.java:7768)
	at edu.rice.cs.drjava.model.GlobalEventNotifier.interpreterReady(GlobalEventNotifier.java:355)
	at edu.rice.cs.drjava.model.repl.InteractionsEventNotifier.interpreterReady(InteractionsEventNotifier.java:109)
	at edu.rice.cs.drjava.model.repl.DefaultInteractionsModel$7.run(DefaultInteractionsModel.java:159)
	at java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)


System Properties:
DrJava Version 20080112-0033
drjava.debug.port = 50219
java.runtime.name = Java(TM) SE Runtime Environment
sun.boot.library.path = C:\Program Files\Java\jre1.6.0_05\bin
java.vm.version = 10.0-b19
java.vm.vendor = Sun Microsystems Inc.
java.vendor.url = http://java.sun.com/
path.separator = ;
java.vm.name = Java HotSpot(TM) Client VM
file.encoding.pkg = sun.io
user.country = CA
sun.os.patch.level = 
java.vm.specification.name = Java Virtual Machine Specification
user.dir = <anonymized user.home>\Desktop
java.runtime.version = 1.6.0_05-b13
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs = C:\Program Files\Java\jre1.6.0_05\lib\endorsed
os.arch = x86
java.io.tmpdir = <anonymized user.home>\AppData\Local\Temp\
line.separator = "\u000d\u000a"
java.vm.specification.vendor = Sun Microsystems Inc.
user.variant = 
os.name = Windows Vista
application.home = <anonymized user.home>\Desktop
sun.jnu.encoding = Cp1252
java.library.path = <anonymized user.home>\Desktop;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\9.0\DLLShared\;C:\Program Files\Inventec\Dreye\DreyeSA\DreyeTTs\eTTS\;C:\watcom-1.3\binnt;C:\watcom-1.3\binw;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\9.0\DLLShared" /M
java.specification.name = Java Platform API Specification
java.class.version = 50.0
sun.management.compiler = HotSpot Client Compiler
os.version = 6.0
user.home = <anonymized user.home>
user.timezone = America/New_York
java.awt.printerjob = sun.awt.windows.WPrinterJob
file.encoding = Cp1252
java.specification.version = 1.6
java.class.path = <anonymized user.home>\Desktop\drjava-stable-20080106-0744.exe
user.name = <anonymized user.name>
java.vm.specification.version = 1.0
java.home = C:\Program Files\Java\jre1.6.0_05
sun.arch.data.model = 32
user.language = en
java.specification.vendor = Sun Microsystems Inc.
awt.toolkit = sun.awt.windows.WToolkit
java.vm.info = mixed mode, sharing
java.version = 1.6.0_05
java.ext.dirs = C:\Program Files\Java\jre1.6.0_05\lib\ext;C:\Windows\Sun\Java\lib\ext
sun.boot.class.path = C:\Program Files\Java\jre1.6.0_05\lib\resources.jar;C:\Program Files\Java\jre1.6.0_05\lib\rt.jar;C:\Program Files\Java\jre1.6.0_05\lib\sunrsasign.jar;C:\Program Files\Java\jre1.6.0_05\lib\jsse.jar;C:\Program Files\Java\jre1.6.0_05\lib\jce.jar;C:\Program Files\Java\jre1.6.0_05\lib\charsets.jar;C:\Program Files\Java\jre1.6.0_05\classes
java.vendor = Sun Microsystems Inc.
file.separator = \
java.vendor.url.bug = http://java.sun.com/cgi-bin/bugreport.cgi
sun.io.unicode.encoding = UnicodeLittle
sun.cpu.endian = little
java.rmi.server.hostname = 127.0.0.1
sun.desktop = windows
sun.awt.exception.handler = edu.rice.cs.drjava.ui.DrJavaErrorHandler
sun.cpu.isalist = pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86

#DrJava configuration file
#Sun Apr 06 23:21:30 EDT 2008
javac.location = C:\\Program Files\\Java\\jre1.6.0_04\\lib\\resources.jar
extra.classpath = G:\\Winter 2008\\cs125\\libraryFiles;F:\\Winter 2008\\cs125\\libraryFiles
key.delete.next = shift DELETE
key.delete.previous = shift BACK_SPACE
recent.files = [G:\\Winter 2008\\cs125\\Assignments\\5\\A05\\BigIntUtilTester.java,G:\\Winter 2008\\cs125\\Assignments\\5\\A05\\BigIntUtil.java,G:\\Winter 2008\\cs125\\Assignments\\5\\A05\\AdvancedPegGame.java,G:\\Winter 2008\\cs125\\Labs\\12\\L12\\Vehicles\\Fleet.java,G:\\Winter 2008\\cs125\\Labs\\12\\L12\\Passenger.java]
window.height = 786
window.width = 1296
window.x = -8
window.y = -8
last.dir = G:\\Winter 2008\\cs125\\Assignments\\5\\A05\\Parent.java
last.interactions.dir = G:\\Winter 2008\\cs125\\Assignments\\5\\A05
dialog.drjava.error.popup.enabled = false


Used memory: about 37.08 megabytes
Free memory: about 636.78 kilobytes
Total memory: about 37.70 megabytes
Total memory can expand to: about 63.56 megabytes

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