Java中的 DateFormat getTimeInstance() 方法及示例

Java.text 包的 DateFormat 类是一个抽象类，用于格式化和解析任何语言环境的日期。它允许我们将日期格式化为文本并将文本解析为日期。 DateFormat 类提供了许多功能来获取、格式化、解析默认日期/时间。

Note: DateFormat class extends Format class that means it is a subclass of Format class. Since DateFormat class is an abstract class, therefore, it can be used for date/time formatting subclasses, which format and parses dates or times in a language-independent manner.

编程需要懂一点英语

包视图：

java.text Package
    DateFormat Class
        getTimeInstance() Method

getTimeInstance() Java中DateFormat 类的方法用于获取时间格式。这个时间格式化程序带有默认语言环境的默认格式化样式。

句法：

public static final DateFormat getTimeInstance()

参数：该方法不带任何参数。

返回类型：该方法返回以特定格式格式化的时间。

示例 1：

Java

// Java Program to Illustrate getTimeInstance() Method
// of DateFormat Class
 
// Importing required classes
import java.text.*;
import java.util.*;
 
// Main class
public class GFG {
 
    // Main driver method
    public static void main(String[] argv)
    {
 
        // Initializing the first formatter by
        // creating object of DateFormat class
        DateFormat DFormat = DateFormat.getTimeInstance();
 
        System.out.println("Object: " + DFormat);
 
        // Formatting the string using format() method
        String str = DFormat.format(new Date());
 
        // Displaying the formatted string time on console
        System.out.println(str);
    }
}

Java

// Java Program to Illustrate getTimeInstance() Method
// of DateFormat Class
 
// Importing required classes
import java.text.*;
import java.util.*;
 
// Main class
public class GFG {
 
    // Main driver method
    public static void main(String[] args)
        throws InterruptedException
    {
 
        // Initializing simple date format mm/dd/yyyy
        // by creating object of SimpleDateFormat class
        SimpleDateFormat SDFormat
            = new SimpleDateFormat("MM/dd/yyyy");
 
        // Displaying the formats
        Date date = new Date();
        String str_Date1 = SDFormat.format(date);
 
        // Displaying original date
        System.out.println("The Original: " + (str_Date1));
 
        // Initializing the Time formatter
        DateFormat DFormat = DateFormat.getTimeInstance();
 
        System.out.println("Object: " + DFormat);
 
        // Formatting the string using format() method
        String str = DFormat.format(new Date());
 
        // Displaying the formatted string time on console
        System.out.println(str);
    }
}

输出

Object: java.text.SimpleDateFormat@8400729
6:39:49 AM

示例 2：

Java

// Java Program to Illustrate getTimeInstance() Method
// of DateFormat Class
 
// Importing required classes
import java.text.*;
import java.util.*;
 
// Main class
public class GFG {
 
    // Main driver method
    public static void main(String[] args)
        throws InterruptedException
    {
 
        // Initializing simple date format mm/dd/yyyy
        // by creating object of SimpleDateFormat class
        SimpleDateFormat SDFormat
            = new SimpleDateFormat("MM/dd/yyyy");
 
        // Displaying the formats
        Date date = new Date();
        String str_Date1 = SDFormat.format(date);
 
        // Displaying original date
        System.out.println("The Original: " + (str_Date1));
 
        // Initializing the Time formatter
        DateFormat DFormat = DateFormat.getTimeInstance();
 
        System.out.println("Object: " + DFormat);
 
        // Formatting the string using format() method
        String str = DFormat.format(new Date());
 
        // Displaying the formatted string time on console
        System.out.println(str);
    }
}

输出

The Original: 01/11/2022
Object: java.text.SimpleDateFormat@8400729
6:45:24 AM