Java application : ask to wait in case of memory overflow

I am having a java application and spawns lot of threads..and due to out of memory error..it dies if it runs for too much time.. Is there a jvm configuration parameter, that I c开发者_如何学Pythonan set so that it will wait for memory when no memory is available, instead of throwing out of memory error.

Back up a little. If your app is creating so many threads that the JVM runs out of memory, you really need to refactor to use some sort of thread-pooling mechanism. You could catch the out-of-memory exception and see if any threads have freed up resources and then return without handling it but that's a bad code smell to me.

I do not really think that would be feasible to set as a jvm parameter. You should have -Xmx and -Xms set to the appropriate values for the JVM. After that in your code you can check current free memory on the heap using Runtime.freeMemory. If the free memory is too low you can probably make your thread sleep till you got enough memory to process.