static变量与实例变量 java

最新推荐文章于 2022-09-10 14:12:30 发布

ruofeng133

最新推荐文章于 2022-09-10 14:12:30 发布

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分类专栏： java

本文链接：https://blog.youkuaiyun.com/A13155283231/article/details/72382009

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本文探讨了类变量与实例变量的区别，指出类变量为所有对象共有，改变一个对象的类变量值会影响所有对象；而实例变量属于每个对象私有，改变一个对象的实例变量不会影响其他对象。

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类变量和实例变量的区别在于：类变量是所有对象共有，其中一个对象将它值改变，其他对象得到的就是改变后的结果；而实例变量则属对象私有，某一个对象将其值改变，不影响其他对象；

int snum = 0;
	@Override
	public void run() {
		snum = num;
		System.out.println("Thread "+ num +" is running..." + " snum: " + snum);
	}

static int snum = 0;
	@Override
	public void run() {
		try {
			Thread.sleep(1000);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		snum = num;
		System.out.println("Thread "+ num +" is running..." + " snum: " + snum);
	}

Thread 0 is running... snum: 0
Thread 1 is running... snum: 1
Thread 2 is running... snum: 2
Thread 3 is running... snum: 3
Thread 6 is running... snum: 6
Thread 7 is running... snum: 7
Thread 9 is running... snum: 9
Thread 4 is running... snum: 4
Thread 8 is running... snum: 8
Thread 5 is running... snum: 5

Thread 7 is running... snum: 0
Thread 0 is running... snum: 0
Thread 8 is running... snum: 0
Thread 4 is running... snum: 4
Thread 3 is running... snum: 3
Thread 1 is running... snum: 1
Thread 6 is running... snum: 2
Thread 2 is running... snum: 2
Thread 5 is running... snum: 5
Thread 9 is running... snum: 9