读书笔记<深入理解JVM>01 关于OutOfMemoryError 堆空间的溢出

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)