I use reJ for editing class files directly. It allows you to edit instructions, methods, constant pool, diff classes, and a split view with a hex editor. It’s ridiculously awesome.
You can follow these steps to modify your java class: Decompile the .class file as you have done and save it as .java Create a project in Eclipse with that java file, the original JAR as library, and all its dependencies Change the .java and compile Get the modified .class file and put it again … Read more
Yes, you can use reserved words. The words are only for the compiler. They do not appear in the generated byte code. An example of using reserved Java words is in the JVM-based Scala language. Scala has different constructs and syntax than Java, but compiles to Java byte code, for running on a JVM. This … Read more
You can un-check the build automatically in Project menu and then build by hand by type Ctrl + B, or clicking an icon the appears to the right of the printer icon.