Posted on 2008-04-18 14:10
zht 阅读(668)
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J2SE
Runtime runtime = Runtime.getRuntime();
long total = runtime.totalMemory();
long free = runtime.freeMemory();
System.out.println(total+"-"+free);
totalMemory()
/**
* Returns the total amount of memory in the Java virtual machine.
* The value returned by this method may vary over time, depending on
* the host environment.
* <p>
* Note that the amount of memory required to hold an object of any
* given type may be implementation-dependent.
*
* @return the total amount of memory currently available for current
* and future objects, measured in bytes.
*/
freeMemory()
/**
* Returns the amount of free memory in the Java Virtual Machine.
* Calling the
* <code>gc</code> method may result in increasing the value returned
* by <code>freeMemory.</code>
*
* @return an approximation to the total amount of memory currently
* available for future allocated objects, measured in bytes.
*/
通过这个方法，可以写一个类似于Windows任务管理器的面板：
