static变量与实例变量 java

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

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

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

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

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