jvm_demo_TestDeadThread

package cn.itcast_03_jvm.demo;


import java.util.ArrayList;
/**
 * 64kb/50毫秒
 * @author wilson
 *
 */
public class TestMemory {
static class OOMObject {
public byte[] placeholder = new byte[64 * 1024*40];
}


public static void fillHeap(int num) throws Exception {
ArrayList<OOMObject> list = new ArrayList<OOMObject>();
for (int i = 0; i < num; i++) {
Thread.sleep(50);
list.add(new OOMObject());
}
System.gc();
}


public static void main(String[] args) throws Exception {
Thread.sleep(10000);
fillHeap(100);
Thread.sleep(20000000);
}
}