代码片段如下：
package com.gosaint.shiro; import java.util.ArrayList; import java.util.List; public class HeadOOM { static class OOMObject{ } public static void main(String[] args) { List<OOMObject> list=new ArrayList<OOMObject>(); while(true){ list.add(new OOMObject()); } } }
配置主方法运行参数：
-verbose:gc -Xms20m -Xmx20m -XX:+PrintGCDetails -XX:SurvivorRatio=8
异常如下：
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:3210)
at java.util.Arrays.copyOf(Arrays.java:3181)
at java.util.ArrayList.grow(ArrayList.java:265)
at java.util.ArrayList.ensureExplicitCapacity(ArrayList.java:239)
at java.util.ArrayList.ensureCapacityInternal(ArrayList.java:231)
at java.util.ArrayList.add(ArrayList.java:462)
at com.gosaint.shiro.HeadOOM.main(HeadOOM.java:14)