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Java SimpleDateFormat set2DigitYearStart()用法及代碼示例


SimpleDateFormat類的set2DigitYearStart()方法用於設置100年的2位數字年份,並將其解釋為以user-specific日期開始。該方法解析日期,並將日期設置在starting_Date到(starting_Date + 100)年的範圍內。

用法:

public void set2DigitYearStart(Date starting_Date)

參數:該方法采用日期類型的一個參數starting_date,該參數表示方法中的開始日期,範圍可以長達(starting_date + 100)年。


返回值:該方法返回一個空類型。

以下示例程序旨在說明SimpleDateFormat的set2DigitYearStart()方法的用法:
示例1:

// Java code to illustrate set2DigitYearStart() method 
  
import java.text.*; 
import java.util.Calendar; 
  
public class SimpleDateFormat_Demo { 
    public static void main(String[] args) 
        throws InterruptedException 
    { 
  
        SimpleDateFormat dt 
            = new SimpleDateFormat("MM/ dd/ yy"); 
  
        try { 
            Calendar cal = Calendar.getInstance(); 
            cal.setTime(dt.parse("10/ 27/ 16")); 
            System.out.println("The Starting Time: "
                               + cal.getTime()); 
  
            // Setting 1916 instead of 2016 
            // Using set2DigitYearStart() method 
            dt.set2DigitYearStart( 
                dt.parse("01/ 01/ 1900")); 
            cal.setTime(dt.parse("06/ 12/ 16")); 
            System.out.println("The New Time: "
                               + cal.getTime()); 
        } 
  
        catch (ParseException excpt) { 
            excpt.printStackTrace(); 
        } 
    } 
}
輸出:
The Starting Time: Thu Oct 27 00:00:00 UTC 2016
The New Time: Mon Jun 12 00:00:00 UTC 1916

示例2:

// Java code to illustrate set2DigitYearStart() method 
  
import java.text.*; 
import java.util.Calendar; 
  
public class SimpleDateFormat_Demo { 
    public static void main(String[] args) 
        throws InterruptedException 
    { 
  
        SimpleDateFormat dt 
            = new SimpleDateFormat("MM/ dd/ yy"); 
  
        try { 
            Calendar cal = Calendar.getInstance(); 
            cal.setTime(dt.parse("01/ 28/ 19")); 
            System.out.println("The Starting Time: "
                               + cal.getTime()); 
  
            // Setting 1916 instead of 2016 
            // Using set2DigitYearStart() method 
            dt.set2DigitYearStart( 
                dt.parse("01/ 01/ 1900")); 
            cal.setTime(dt.parse("05/ 12/ 17")); 
            System.out.println("The New Time: "
                               + cal.getTime()); 
        } 
  
        catch (ParseException excpt) { 
            excpt.printStackTrace(); 
        } 
    } 
}
輸出:
The Starting Time: Mon Jan 28 00:00:00 UTC 2019
The New Time: Sat May 12 00:00:00 UTC 1917


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注:本文由純淨天空篩選整理自Chinmoy Lenka大神的英文原創作品 SimpleDateFormat set2DigitYearStart() Method in Java with Examples。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。