Remember: decompile responsibly and respect intellectual property.

Here’s a short article on – what they are, how they work, and popular tools. Understanding JAR Decompilers: How to Peek Inside Java Archives What Is a JAR Decompiler? A JAR decompiler is a tool that reverses the Java compilation process. It takes a compiled .jar file (Java Archive) – which contains .class bytecode files – and converts them back into human-readable Java source code ( .java ).