java.lang.reflect.InvocationTargetException

Newbie & Debugging Questions
#1

huh?

java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.sun.javaws.Launcher.executeApplication(Unknown Source)
	at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
	at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
	at com.sun.javaws.Launcher.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ExceptionInInitializerError
	at org.lwjgl.Sys.createImplementation(Sys.java:111)
	at org.lwjgl.Sys.<clinit>(Sys.java:100)
	at org.lwjgl.opengl.Display.<clinit>(Display.java:128)
	at org.newdawn.slick.AppGameContainer$1.run(AppGameContainer.java:39)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.newdawn.slick.AppGameContainer.<clinit>(AppGameContainer.java:36)
	at Game1.main(Game1.java:253)
	... 9 more
Caused by: java.security.AccessControlException: access denied (java.util.PropertyPermission org.lwjgl.util.Debug read)
	at java.security.AccessControlContext.checkPermission(Unknown Source)
	at java.security.AccessController.checkPermission(Unknown Source)
	at java.lang.SecurityManager.checkPermission(Unknown Source)
	at java.lang.SecurityManager.checkPropertyAccess(Unknown Source)
	at java.lang.System.getProperty(Unknown Source)
	at java.lang.Boolean.getBoolean(Unknown Source)
	at org.lwjgl.LWJGLUtil$4.run(LWJGLUtil.java:451)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.lwjgl.LWJGLUtil.getPrivilegedBoolean(LWJGLUtil.java:449)
	at org.lwjgl.LWJGLUtil.<clinit>(LWJGLUtil.java:268)
	... 16 more
#2

According to the stack trace the exception originates from org.lwjgl.LWJGLUtil. If you look in that class, you’ll see the mentioned lines attempt to read a system property. Your environment (webstart? applet?) has a security manager that doesn’t allow the reading of system properties.