Error preverifying class java.lang.a java/lang/ClassFormatException: java/lang/a
com.sun.kvem.ktools.ExecutionException: Preverifier returned 1
Build failed
com.sun.kvem.midletsuite.InvalidJadException: Reason = 31
The jar size value in the Application Descriptor does not match the real jar file size.
Obfuscation fails with WTK 2.1, and proguard on Windows 2000
Author
Hello,
I hope you are very fine...
Just a small problem... my program runs and packages great. It is wokring very well, but when it comes to obfuscation... A strange problem happens...
Your app consists of a .jar file and a .jad file. The jad file information includes, among other things, the size in bytes of the corresponding jar. However, obfuscators generally have the effect of reducing your jar size, and generally do not update your jar file to match.
Fortunately, the jad file is a plain text format. Locate the line "MIDlet-Jar-Size: XXXXX" and change the number to match the size of the jar post obfuscation.
Fortunately, the jad file is a plain text format. Locate the line "MIDlet-Jar-Size: XXXXX" and change the number to match the size of the jar post obfuscation.
Author
Hi..
Thanks for the reply..
But, this still wasn''t the problem..
I tried to obfuscate manually, and set the size in the jad file manually..
But, then i get the weird error message in the mobile phone.. "Cannot create class in system package"
What does this mean? Any help would be greatly appreciated..
Thank you very much..
Thanks for the reply..
But, this still wasn''t the problem..
I tried to obfuscate manually, and set the size in the jad file manually..
But, then i get the weird error message in the mobile phone.. "Cannot create class in system package"
What does this mean? Any help would be greatly appreciated..
Thank you very much..
"Cannot create class in system package"
That error happens when your jar includes classes that are in the java.* or javax.* package hierarchies, or when you try to import classes from these packages that aren''t installed on the phone. It''s illegal to add classes to those packages, and no phone will let you do it.
It usually happens when people try to include APIs that are not installed on the phone, for example, trying to use MMAPI on phones that don''t support it.
shmoove
That error happens when your jar includes classes that are in the java.* or javax.* package hierarchies, or when you try to import classes from these packages that aren''t installed on the phone. It''s illegal to add classes to those packages, and no phone will let you do it.
It usually happens when people try to include APIs that are not installed on the phone, for example, trying to use MMAPI on phones that don''t support it.
shmoove
Author
Hello,
Thank you very much for the replies..
I tried to preverify the jar file after obfuscation..
But i get
Error preverifying class a
java/lang/ClassFormatException: a
Why would this happen? Is the problem with obfuscation or the preverification?
Thank you very much in advance for all your help
Thank you very much for the replies..
I tried to preverify the jar file after obfuscation..
But i get
Error preverifying class a
java/lang/ClassFormatException: a
Why would this happen? Is the problem with obfuscation or the preverification?
Thank you very much in advance for all your help
Probably the obfuscation. "ClassFormatException" is thrown by the class loader when your data doesn''t represent a valid .class file.
Thank you very much,
But how can i correct it? Is it a problem becuase wtk2.1 is using the wrong parameters when using Nokia 3510i MIDP SDK?
But how can i correct it? Is it a problem becuase wtk2.1 is using the wrong parameters when using Nokia 3510i MIDP SDK?
quote:Original post by Anonymous Poster
Thank you very much,
But how can i correct it? Is it a problem becuase wtk2.1 is using the wrong parameters when using Nokia 3510i MIDP SDK?
are you using Nokia specific classes from the sdk?
This topic is closed to new replies.
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