public void changeGroupState(){
System.out.println((new Date())+"start1112");
}
执行结果:
Wed Aug 15 10:19:00 CST 2018start1112
Wed Aug 15 10:19:00 CST 2018start1112
Wed Aug 15 10:20:00 CST 2018start1112
Wed Aug 15 10:20:00 CST 2018start1112
Wed Aug 15 10:21:00 CST 2018start1112
Wed Aug 15 10:21:00 CST 2018start1112