How to decompile .exe to jar file? [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help cen开发者_JAVA技巧ter. Closed 10 years ago.

the .exe application is written in Java

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Well, if possible, you can do it by DJ Java Decompiler