java: system.gc()和垃圾回收机制finalize

class Person{
	private int age;
	private String name;
	
	public Person(int age, String name)
	{
		this.age = age;
		this.name = name;
	}
	
	public String toString()
	{
		return "姓名:"+this.name+",年龄:"+this.age;
	}

	@Override
	public void finalize() throws Throwable {
		// TODO 自动生成的方法存根
		//super.finalize();
		System.out.println("我完蛋了，我被回收了。。。("+this+")");
	}
	
	
	
}

public class SystemDemo2 {

		public static void main(String args[])
		{
			Person pr = new Person(110,"张三");
			//取消引用
			pr = null;
			//强制进行垃圾回收
			System.gc();
		}
	
	
}