如何在j2me中通過手機獲取最大可用堆大小？

Question

由於堆大小的限制，我的Midlet需要以不同的堆大小以不同的方式運行。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(); 

也可參考此Runtime Java Documentation.