Java 中的 SimpleDateFormat get2 digitiyarstart()方法，示例
原文:https://www . geesforgeks . org/simpledateform-get2 digitiyarstart-method-in-Java-with-examples/
SimpleDateFormat 类的get2 digitiyarstart()方法用于返回解析或 set2DigitYearStart()方法中设置的 100 年期间的开始。它返回 100 年期间的开始日期，2 位数的年份被解释为在日期内设置。 语法:
public Date get2DigitYearStart()
参数:该方法不取任何参数。 返回值:该方法返回被解释为在日期 内设置的 100 年期两位数年份的开始日期。以下程序说明了简单日期格式的 get2DigitYearStart()方法的工作原理: 示例 1:
Java 语言(一种计算机语言，尤用于创建网站)
// Java code to illustrate
// get2DigitYearStart() 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());
// Use of get2DigitYearStart() method
// to check start year
cal.setTime(dt.get2DigitYearStart());
System.out.println("The start Year: "
+ cal.get(Calendar.YEAR));
}
catch (ParseException except) {
except.printStackTrace();
}
}
}
Output:
The Starting Time: Mon Jan 28 00:00:00 UTC 2019
The New Time: Sat May 12 00:00:00 UTC 1917
The start Year: 1900
例 2:
Java 语言(一种计算机语言，尤用于创建网站)
// Java code to illustrate
// get2DigitYearStart() 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/ 2000"));
cal.setTime(dt.parse("05/ 12/ 17"));
System.out.println("The New Time: "
+ cal.getTime());
// Use of get2DigitYearStart() method
// to check start year
cal.setTime(dt.get2DigitYearStart());
System.out.println("The start Year: "
+ cal.get(Calendar.YEAR));
}
catch (ParseException except) {
except.printStackTrace();
}
}
}
Output:
The Starting Time: Mon Jan 28 00:00:00 UTC 2019
The New Time: Fri May 12 00:00:00 UTC 2017
The start Year: 2000
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