在Java 8中创建内存泄漏
同样的问题已经得到了回答(用Java创建内存泄漏),但现在Java 8删除了永久代。我认为更新这个主题将是有用的,因为大多数答案都依赖于耗尽永久代的空闲空间。
那么,在Java 8中创建内存泄漏的最简单方法是什么?
我认为一个普通的内部类内存泄漏会起作用。 取自互联网的示例:
public class LeakFactory
{//Just so that we have some data to leak
int myID = 0;
// Necessary because our Leak class is non-static
public Leak createLeak()
{
return new Leak();
}
// Mass Manufactured Leak class
public class Leak
{//Again for a little data.
int size = 1;
}
}
public class SwissCheese
{//Can't have swiss cheese without some holes
public Leak[] myHoles;
public SwissCheese()
{
// let's get the holes and store them.
myHoles = new Leak[1000];
for (int i = 0; i++; i<1000)
{//Store them in the class member
myHoles[i] = new LeakFactory().createLeak();
}
// Yay! We're done!
// Buh-bye LeakFactory. I don't need you anymore...
}
}
这里发生的是createLeak()工厂方法返回Leak类,理论上LeakFactory对象有资格被GC删除,因为我们不会引用它。 但Leak类需要LeakFactory才能存在,因此LeakFactory永远不会被删除。 无论您使用什么Java版本,这都会造成内存泄漏。
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