Java Calendar getTimeInMillis()用法及代码示例

Calendar类中的getTimeInMillis()方法用于返回此日历的当前时间(以毫秒为单位)。

用法:

public long getTimeInMillis()

参数：该方法不包含任何参数。

返回值：该方法以毫秒为单位返回此日历的当前时间。

以下示例程序旨在说明Calendar类的getTimeInMillis()方法的用法：
示例1:

// Java code to illustrate 
// getTimeInMillis() method 
  
import java.util.*; 
  
public class Calendar_Demo { 
  
    public static void main(String args[]) 
        throws InterruptedException 
    { 
  
        // Creating a calendar 
        Calendar calndr1 = Calendar.getInstance(); 
  
        // Displaying the current time 
        System.out.println("The Current Time"
                           + " is: "
                           + calndr1.getTimeInMillis()); 
  
        // Adding few delay 
        Thread.sleep(10000); 
  
        // Creating another calendar 
        Calendar calndr2 = Calendar.getInstance(); 
  
        // Displaying the upcoming time 
        System.out.println("The Upcoming Time"
                           + " is: "
                           + calndr2.getTimeInMillis()); 
    } 
}

输出：

The Current Time is: 1550725664034
The Upcoming Time is: 1550725674053

示例2:

// Java code to illustrate 
// getTimeInMillis() method 
  
import java.util.*; 
  
public class Calendar_Demo { 
  
    public static void main(String args[]) 
        throws InterruptedException 
    { 
  
        // Creating a calendar 
        Calendar calndr1 = Calendar.getInstance(); 
  
        // Displaying the current time 
        System.out.println("The Current Time"
                           + " is: "
                           + calndr1.getTimeInMillis()); 
  
        // Adding few delay 
        Thread.sleep(5000); 
  
        // Creating another calendar 
        Calendar calndr2 = Calendar.getInstance(); 
  
        // Displaying the upcoming time 
        System.out.println("The Upcoming Time"
                           + " is: "
                           + calndr2.getTimeInMillis()); 
    } 
}

输出：

The Current Time is: 1550725683182
The Upcoming Time is: 1550725688208

参考： https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html#getTimeInMillis–

相关用法

注：本文由纯净天空筛选整理自Chinmoy Lenka大神的英文原创作品 Calendar getTimeInMillis() Method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。