1.下载ha456.jar
https://www.ibm.com/developerworks/community/groups/service/html/communityview?communityUuid=4544bafe-c7a2-455f-9d43-eb866ea60091
2.java -Xmx4g -jar ha456.jar
3.打开heapdump.phd
4.他就会显示下面的图片，出现占用内存最高的类
堆内存对象分析ha(heap analyser)
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转载自blog.csdn.net/abcd1101/article/details/71773713
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