They probably use an obfuscator. Standard practice for Java which is otherwise relatively easy to decompile.
Or they may not bother, because what are you going to do with that source code anyway? You don't need it to pirate the IDE, there's no secret sauce in there, and you obviously can't use it to make a competitor. There would be very little value in obtaining the code.
Or they may not bother, because what are you going to do with that source code anyway? You don't need it to pirate the IDE, there's no secret sauce in there, and you obviously can't use it to make a competitor. There would be very little value in obtaining the code.