JVM HeapTest

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import java.util.ArrayList;

public class HeapTest {

    byte[] a = new byte[1024 * 100];  //100KB

    public static void main(String[] args) throws InterruptedException {
        ArrayList<HeapTest> heapTest = new ArrayList<>();
        while (true) {
            heapTest.add(new HeapTest());
            Thread.sleep(10);
        }

    }
}

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baoguo@MacBook-Pro java % jvisualvm

如果visualGC插件没有安装，就自己安装一下。