27 行
779 B
Java
27 行
779 B
Java
package com.mj;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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public class Times {
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private static final SimpleDateFormat fmt = new SimpleDateFormat("HH:mm:ss.SSS");
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public interface Task {
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void execute();
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}
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public static void test(String title, Task task) {
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if (task == null) return;
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title = (title == null) ? "" : ("【" + title + "】");
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System.out.println(title);
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System.out.println("开始：" + fmt.format(new Date()));
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long begin = System.currentTimeMillis();
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task.execute();
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long end = System.currentTimeMillis();
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System.out.println("结束：" + fmt.format(new Date()));
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double delta = (end - begin) / 1000.0;
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System.out.println("耗时：" + delta + "秒");
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System.out.println("-------------------------------------");
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}
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}
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