java.lang.VerifyError on method that worked a minute ago

Question

Apologies in advance but I have never seen this error before and don\'t know what to include. I am using NetBeans and suddenly began getting this error:

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Answer 1

This happened to me in Netbeans. In netbeans, when you try to copy a .java file in same directory without "refactor copy", it places the new file as "YourJavaFile_1.java" and problem occures. But if you copy that file with "refactor copy", there is no problem.

It gives the name as "YourJavaFile1.java", but with refactoring.