memory leaks - how to garbage collect a direct buffer java -

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I have a memory leak that I have separated the directly byte buffers that were handled incorrectly. 

 ByteBuffer buff = ByteBuffer.allocateDirect (7777777)

GC collects those buffers that monkeys these buffers but does not dispose of buffers themselves if I have buffers Instant transient objects, I get this encouraging message. 

 java.lang.OutOfMemoryError: Direct buffer memory

I am searching for this problem and apparently
< P> 

 System.gc ()

does not work

I suspect that somewhere in your application is a reference to the byteffor instance (s) and it is preventing garbage from being collected.

Buffer memory for a normal byte buffer is allocated outside the normal pile (so that the GC does not move it !!) However, the Bytebuff API does not provide any way to clear / remove a buffer clearly is. So I think the garbage collector will do this ... Once it determines that the bytebuff object is no longer referred.


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