MobileRead Forums - View Single Post - iLiad THe new development toy from iRex: java

scotty1024 · 05-09-2007, 05:57 PM

Based on the help text it emits it appears there is a developer.img and we have the stripped down target.img. The stack traces it generates contain no line number information (so I don't bother compiling with -g) and generally the messages are cryptic and obtuse.

Here's some of what I have figured out.

Code:

[Loaded java/lang/NoClassDefFoundError/class]
[Loaded java/lang/LinkageError/class]
java.lang.NoClassDefFoundError: `>@
    java.lang.NoClassDefFoundError.<init>(Ljava/lang/String;)V
    Test1.paint(Ljava/awt/Graphics;)V
    java.awt.Component.dispatchEvent(Ljava/awt/AWTEvent;)V
    java.awt.EventQueue$Delegate.dispatchEvent(Ljava/awt/AWTEvent;)V
    java.awt.EventDispatchThread.()V
    java.lang.Thread._run()V

Don't mix .class files from directories and JAR's, all kinds of hell comes from this. Probable bug in elate. Put everything in JAr's and its happy.

Code:

java.lang.NoSuchMethodError
    Test1.<init>()V
    Test1.main([Ljava/lang/String;)V

Somewhere inside the constructor for Test1 you are trying to invoke a method elate doesn't provide in some system class. In this case it was: this.setUndecorated(true);

These can be very annoying to track down. I'm sure Tao has a Java environment with just the supported classes and methods in it but for now...

Code:

app/stdio/jcode: (*env)->FindClass returned an exception
java.lang.NoClassDefFoundError: com.surerange.mobiled.SendFax
    java.lang.NoClassDefFoundError.<init>(Ljava/lang/String;)V
    com.tao_group.sys.Eclassloader.()V
    com.tao_group.sys.Eclassloader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
    java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;

I'd like to load your class but it extends or implements something I can't find (bet you'd like to know what this is!) Inspect your extends and implements, usually easy to figure out.

Code:

app/stdio/jcode: (*env)->FindClass returned an exception
java.lang.NoClassDefFoundError: EV
    java.lang.NoClassDefFoundError.<init>(Ljava/lang/String;)V

This is what you get when it can't find the class to be loaded e.g. bad classpath.

05-09-2007, 05:57 PM	#19
scotty1024 Banned Posts: 1,300 Karma: 1479 Join Date: Jul 2006 Location: Peoples Republic of Washington Device: Reader / iPhone / Librie / Kindle	Based on the help text it emits it appears there is a developer.img and we have the stripped down target.img. The stack traces it generates contain no line number information (so I don't bother compiling with -g) and generally the messages are cryptic and obtuse. Here's some of what I have figured out. Code: [Loaded java/lang/NoClassDefFoundError/class] [Loaded java/lang/LinkageError/class] java.lang.NoClassDefFoundError: `>@ java.lang.NoClassDefFoundError.<init>(Ljava/lang/String;)V Test1.paint(Ljava/awt/Graphics;)V java.awt.Component.dispatchEvent(Ljava/awt/AWTEvent;)V java.awt.EventQueue$Delegate.dispatchEvent(Ljava/awt/AWTEvent;)V java.awt.EventDispatchThread.()V java.lang.Thread._run()V Don't mix .class files from directories and JAR's, all kinds of hell comes from this. Probable bug in elate. Put everything in JAr's and its happy. Code: java.lang.NoSuchMethodError Test1.<init>()V Test1.main([Ljava/lang/String;)V Somewhere inside the constructor for Test1 you are trying to invoke a method elate doesn't provide in some system class. In this case it was: this.setUndecorated(true); These can be very annoying to track down. I'm sure Tao has a Java environment with just the supported classes and methods in it but for now... Code: app/stdio/jcode: (env)->FindClass returned an exception java.lang.NoClassDefFoundError: com.surerange.mobiled.SendFax java.lang.NoClassDefFoundError.<init>(Ljava/lang/String;)V com.tao_group.sys.Eclassloader.()V com.tao_group.sys.Eclassloader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class; java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class; I'd like to load your class but it extends or implements something I can't find (bet you'd like to know what this is!) Inspect your extends and implements, usually easy to figure out. Code: app/stdio/jcode: (env)->FindClass returned an exception java.lang.NoClassDefFoundError: EV java.lang.NoClassDefFoundError.<init>(Ljava/lang/String;)V This is what you get when it can't find the class to be loaded e.g. bad classpath.