java 代码耗时计算
long time1=System.currentTimeMillis();
long time2=System.currentTimeMillis();
System.out.println("当前程序耗时:"+(time2-time1)+"ms");
long time3=System.currentTimeMillis();
System.out.println("当前程序耗时:"+(time3-time2)+"ms");
"long time1=System.currentTimeMillis(); long time2=System.currentTimeMillis(); System.out.println('当前程序耗时:'+(time2-time1)+'ms'); long time3=System.curr ...."
long time1=System.currentTimeMillis();
long time2=System.currentTimeMillis();
System.out.println("当前程序耗时:"+(time2-time1)+"ms");
long time3=System.currentTimeMillis();
System.out.println("当前程序耗时:"+(time3-time2)+"ms");