No, java does not support destructors. All freeing the memory task is done by GARBAGE COLLECTOR.
Java has it's own memory management feature using garbage collector. When you use finalize() the object becomes available for garbage collection and you don't need to explicitly call for the destructor. C# and Java don't want you to worry about destructor as they have feature of garbage collection.
Java is a bytecode language, it has very strong garbage detection. If you were to allow people to define their own destructors it is likely that they might make some mistakes. By automating the process, Java intends to prevent those mistakes.
