long t1 = System.currentTimeMillis();
//...
//do something
long t2 = System.currentTimeMillis();long t = t2 - t1;
System.out.println("app run in " + t + "milliseconds");
//...
//do something
long t2 = System.currentTimeMillis();long t = t2 - t1;
System.out.println("app run in " + t + "milliseconds");
解决方案 »
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