SimpleDateFormat set2DigitYearStart() Method in Java with Examples

The set2DigitYearStart() Method of SimpleDateFormat class is used to set the 100-year period 2-digit years and interpret the same as being in to begin on a user-specific date. The method parses the date and set the date in the range from starting_Date to (starting_Date + 100) years.
Syntax:

public void set2DigitYearStart(Date starting_Date)

Parameters: The method takes one parameter starting_date of Date type which refers to the starting date in the method and can range upto (starting_date + 100) years.
Return Value: The method returns a void type.
Below programs illustrate the working of set2DigitYearStart() Method of SimpleDateFormat: 
Example 1:

Java

// 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 except) {
            except.printStackTrace();
        }
    }
}

Output:

The Starting Time: Thu Oct 27 00:00:00 UTC 2016
The New Time: Mon Jun 12 00:00:00 UTC 1916

Example 2:

Java

// 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 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