Outdated, unsupported and does not decompile correctly Java 5 and later.

Probably, this is the most popular Java decompiler, but primarily of this age only. Free, no source-code available, jad download mirror Author: Pavel Kouznetsov Supports Java up to version 6 (Annotations, generics, enums) Very promising analytical Java decompiler, now becomes an integral part of IntelliJ 14.

Java 8 Lambdas and method references (i.e., the :: operator).

Local classes (both anonymous and named).

Handles language enhancements from Java 5 and beyond, up to Java 8, including: Has its own visual interface and plugins to Eclipse and IntelliJ. It'll even make a decent go of turning class files from other JVM langauges back into java!įree for non-commercial use only, Author: Emmanuel Dupuy

Java 14: 'instance of' pattern match and 'Record types'.

Java 12: Kotlin style 'switch expressions'.

Regularly updated, CFR is able to decompile all the modern Java features: This free and open-source decompiler is available here: Author: Lee Benfield

Here's a list of decompilers presented on this site: Right-click on the Java file and click on Convert Java File to Kotlin File to convert it to Kotlin.

class file and pre-process it, so it becomes JDK 1.3 compatible, and then run Jad over it (one of those older, but better decompilers).īut recently, a new wave of decompilers has forayed onto the market: Procyon, CFR, JD, Fernflower, Krakatau, Candle. Step-1: Open the project on Intellij-IDEA. The only so-so working solution was to take the. The obsoleteness was typically proved by the fact that they can only decompile JDK 1.3 bytecode.

Until recently, you needed to use a Java decompiler and all of them were either unstable, obsolete, unfinished, or in the best case all of the above.

Java to kotlin online converter