Direct Memory Access Java

Does Java Allow Direct Memory Access

Well, there is a sun.misc.Unsafe class. It allows direct memory access, so you can implement some magic like reinterpret casts and so on. The thing is you need to use hacky reflection approach to get the instance and this class is not realy well documented. In general you need a very good reason to use this kind of tool in production code.
Here's an example how to get it:

Field f = Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
Unsafe unsafe = (Unsafe) f.get(null);

There are 105 methods, allowing different low-level stuff. These methods are devoted to direct memory access:

• allocateMemory
• copyMemory
• freeMemory
• getAddress
• getInt - Gets you a value from the memory whose