package demo04;
/*
练习:
验证for循环打印数字1-9999所需要的使用的时间
*/
public class Demo03 {
public static void main(String[] args) {
demo01();
}
private static void demo01() {
//程序执行前,获取一次毫秒值
long s = System.currentTimeMillis();
//执行for循环
for (int i = 0; i < 9999; i++) {
System.out.println(1);
}
//程序执行后再获取一次毫秒值
long e = System.currentTimeMillis();
System.out.println("程序耗时:" + (e - s) + "毫秒");
}
}
Java programs run efficiently display
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Origin blog.csdn.net/carrotluotian/article/details/103516931
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