From a jar I have extracted the files.class, but I can not open them as a project or archive.java
From a jar I have extracted the files.class, but I can not open them as a project or archive.java
This question is almost an exact duplicate of this other , but I think you have a pass for the change of SDI.
A .class file is a compiled file and translated into Java Bytecode, the code that the JVM can read.
You can try using a decompiler for Netbeans or use one online , but keep in mind that the resulting code may not be exactly the same as the original and that, depending on the license of your jar, you may be committing a crime.