JVM的内存区域划分(jdk7和jdk8)时间：2022-05-07 19:09:00参考： https://blog.csdn.net/l1394049664/article/details/81486470?tdsourcetag=s_pctim_aiomsg https://blog.csdn.net/Sugar_Rainbow/article/details/68150249 https://blog.csdn.net/zm13007310400/article/details/77534349
