Java基础-finalize

Java基础-finalize

finalize方法在对象被垃圾收集器析构(回收)之前调用,一般用来清除回收对象。
Java的内存回收是由JVM来自动完成。若需要手动使用,则可以使用finalize方法。

protected void finalize()
{
   // 在这里清除回收对象
}

Demo

public class Test {
	public static void main(String[] args) {
		Tests t1 = new Tests(1);
		Tests t2 = new Tests(2);
		Tests t3 = new Tests(3);
		t1 = t2 = null;
		System.gc(); // 调用Java垃圾收集器
	}
}

class Tests {
	private int id;

	public Tests(int id) {
		this.id = id;
		System.out.println("Tests " + id + " is created");
	}

	protected void finalize() throws java.lang.Throwable {
		super.finalize();
		System.out.println("Tests " + id + " is disposed");
	}
}

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转载自blog.csdn.net/weixin_40649194/article/details/89060140
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