当前,有三种获取毫秒值的方法: Java代码//方法System.currentTimeMillis (; //方法2 calendar.getinstance (.gettimeinmillis ); //方法三新日期().getTime ); 最近建立了监控系统,发现代码中有前两种方法,然后突然有一个想法,到底哪个快? 接下来,Java代码import java.util.Calendar; import java.util.Date; publicclasstimetest { privatestaticlong _ ten _ thousand=10000; publicstaticvoidmain (string [ ] args ) { long times=1000*_TEN_THOUSAND; long t1=system.current time millis (; 测试系统(times; long T2=system.current time millis (; system.out.println(T2-T1; 测试日历(times; long T3=system.current time millis (; system.out.println(T3-T2; 测试日期(times; longt4=system.current time millis (; system.out.println(T4-T3; } publicstaticvoidtestsystem (长时间)//use188for(intI=0; I