java lang 验证错误

Question

java.lang.VerifyError: (class: a method: parse signature: 
()Z) Incompatible argument to function

public boolean parse() {


}

What does this error mean and how to fix these kind of errors

Answer 1

Normally this kind of error is related to version problems, you are compiling with a different version of a library than you are running with. There are also some quite subtle varieties of this that can occur with java 1.5 type coercion, where a 1.4 compiler would choose differently. Recompile everything with 1.5, and make sure you're using the same versions.

Answer 2

It usually is about a java 1.5 or 6 compatibility issue (like trying to compile a Java5 or 6 code with an older 1.4 javac).

Clean all your.class files and rebuild from scratch, checking that you have your JDK and JRE at the same level.

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It can also be a bad typecast from a third party class method "return items" to your local ones.

Answer 3

I just found this:

Thrown when the "verifier" detects that a class file, though well formed, contains some sort of internal inconsistency or security problem. Java API

Have you returned a boolean?

Could you please provide more information, which environment is set? The security question is important, I think.

Answer 4

well, first seems to be that the returning value is missong. You should return a boolean value. But this is not the problem. This kind of exception appears when you make a reference which cannot be resolved, like an assignement in a loop

for (i=i; i;=XX;i++)

check such references.

Luis