在java中删除未使用的变量的内存 [英] Delete unused variable's memory in java

问题描述

我知道Java有自己的垃圾收集，但有时我想手动删除垃圾。有没有办法做这样的工作？并且考虑到我有一个很长或很长的函数它声明了很多变量，最好在使用后立即删除未使用的内存而不是自动收集。功能？如果我手动删除垃圾，是否会影响我的申请速度？感谢您的帮助！

I know that Java have its own garbage collection, but sometimes I want to delete the garbage manually. Is there any way to do the work like that? And considering that I have a long or very long function which declares many variables, is this a good idea to delete the unused memory immediately after using instead of auto collection at the end of the function? If I delete garbage manually, does it affect the speed of my application? Thanks for helping!

推荐答案

在java中没有直接和直接的释放内存的方法。您可能会尝试说服垃圾收集器使用众所周知的东西拿走一些对象：

There is no direct and immediate way to free memory in java. You might try to persuade the garbage collector to take away some object using the well known:

Object obj = new Object();
// use obj
obj = null;
System.gc();

但不保证这会立即释放内存。

but there is no guarantee that this will actually free memory immediately.

虽然这适用于堆内存，但只有在函数返回时才能释放堆栈分配的项目。

While this applies to heap memory, stack allocated items can only be freed when the function returns.

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