深入懂得Java虚拟机 示例代码

深入理解Java虚拟机 示例代码

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package com.sam;public class MinorGC {private static final int _1MB = 1024*1024;/** * VM arg: -verbose:gc -Xms20M -Xmx20M -Xmn10M -XX:SurvivorRatio=8 -XX:+PrintGCDetails */public static void testAllocation() {byte[] allocation1, allocation2, allocation3, allocation4;allocation1 = new byte[2*_1MB];allocation2 = new byte[2*_1MB];allocation3 = new byte[2*_1MB];allocation4 = new byte[4*_1MB]; // occur Minor GC}public static void main(String[] args) {MinorGC minorGC = new MinorGC();minorGC.testAllocation();}}