Error Preverifying class

Question

Hi all,
I am using JBuilder 9 Enterprise and have just loaded on the latest J2ME Wireless Tookit which includes CLDC 1.1. I have developed a project using a previous version. Now when I compile I get the following error:
Error preverifying Class blah
java/lang/VerifyError
Can anyone help me out on what setting to change in JBuilder? I have changed the SDK to the correct one. Also, I read that there is a problem with 1.4 as follows:
By default, version 1.4 of the development kit generates class files for version 1.2 of the Java Virtual Machine, while earlier versions of the development kit generated class files for JVM version 1.1. As of this writing, the preverify utility expects version 1.1 class files, so it fails when you give it version 1.2 files generated by the newer development kit. To solve this problem, simply use javac's -target flag to have it generate version 1.1 class files:
javac -target 1.1 -bootclasspath \j2mewtk\lib\midpapi.zip MyClass.java
The Wireless Toolkit sets the target to 1.1 automatically, so you shouldn't see this problem if you're using KToolbar for all your builds. If you're compiling by hand, or you're using KToolbar for all your builds. If you're compiling by hand, or you're using Ant or a make utility or an IDE, be sure to set the appropriate compiler flags.
I can't seem to locate where to change in Jbuilder though.
with regards
James
one answer I was told was:
(This is for JBuilder X, but it might be the same for 9):
Right click on your project .jpx on the top-left and select properties.
Go to the Build -> Java option
Then, there should be an entry for target JVM, change that to "All Java SDKs"
and I think that should do it.
Tried that but with no luck.
I also tried it with just selecting "java 2 SDK, Ver 1.4 and above" but that didn't work either.
The program builds ok but i still get that error..
I also found another hint I think. When I change my doubles to int's the error does not come up and the program builds fine. But, I thought CLDC 1.1 allowed doubles and floats?
Any suggestions would be more than welcome.
James

Answer 1

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