testfinalize.java

疯狂Java讲义_源码(含Java设计模式CHM

/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class TestFinalize
{
	private static TestFinalize tf = null;
	public void info()
	{
		System.out.println("测试资源清理的finalize方法");
	}
	public static void main(String[] args) throws Exception
	{
		//创建TestFinalize对象立即进入去活状态
		new TestFinalize();
		//通知系统进行资源回收
		System.gc();
		System.runFinalization();
		//Thread.sleep(2000);
		tf.info();
	}
	public void finalize()
	{
		//让tf引用到试图回收的去活对象，即去活对象重新变成激活
		tf = this;
	}
}