如何在j2me中通過電話獲取最大可用堆大小？

Question

由於堆大小的限制，我的Midlet需要針對不同的堆大小以不同的方式進行操作。 例如，它應該加載更多或更少的位圖字體。

Answer 1

// Get current size of heap in bytes
long heapSize = Runtime.getRuntime().totalMemory();

// Get maximum size of heap in bytes. The heap cannot grow beyond this size.
// Any attempt will result in an OutOfMemoryException.
long heapMaxSize = Runtime.getRuntime().maxMemory();

// Get amount of free memory within the heap in bytes. This size will increase
// after garbage collection and decrease as new objects are created.
long heapFreeSize = Runtime.getRuntime().freeMemory();

另請參閱此Runtime Java文檔。