Java Calendar getTimeInMillis() 方法

2024年11月3日 | 阅读 1 分钟

java.util.Calendar 类的 getTimeInMillis() 方法以毫秒为单位返回当前时间。此方法返回一个 long 值。

语法

参数

不传递任何参数。

返回值

当前时间的 UTC 毫秒数。

抛出

抛出 InterruptedException

示例 1

import java.util.Calendar;
public class JavaCalendargetTimeInMillisExample1 {
 public static void main(String[] args) throws InterruptedException {
      // create a calendar
      Calendar mycal = Calendar.getInstance();
      // print current time in milliseconds
      System.out.println("Current time : " + mycal.getTime());
      System.out.println("Current time in Millis : " + mycal.getTimeInMillis());
         // create a new calendar mycal2
      Calendar mycal2 = Calendar.getInstance();
 // print the next time in milliseconds
      long l = mycal2.getTimeInMillis();
      System.out.println("Next time is : " + l);
   }
}

输出

Current time : Wed Aug 08 21:54:18 PDT 2018
Current time in Millis : 1533790458542
Next time is : 1533790458620

示例 2

import java.util.Calendar;
public class JavaCalendargetTimeInMillisExample2 {
 public static void main(String[] args) throws InterruptedException {
Calendar mycal = Calendar.getInstance();
 System.out.println("Current time in Millis : " + mycal.getTimeInMillis());
 mycal.add(Calendar.HOUR,20);
      System.out.println("Current time in Millis  after adding 20 hours : " + mycal.getTimeInMillis());
      Calendar mycal2 = Calendar.getInstance();
      long l = mycal2.getTimeInMillis();
      System.out.println("Next time is : " + l);
   }
}

输出

Current time in Millis : 1533791120506
Current time in Millis  after adding 20 hours : 1533863120506
Next time is : 1533791120539

下一主题Java-calendar-gettime-method

Java Calendar getTimeInMillis() 方法

语法

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示例 1

示例 2

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Java Calendar getTimeInMillis() 方法

语法

参数

返回值

抛出

示例 1

示例 2

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