public/subjects/java/checkpoints/date-formatter

Date Formatter

Instructions

Write a class DateFormatter that has three private attributes:

• date: the date to be formatted (as a date).
• format: the format to convert the date to.
• formattedDate: contains the date converted into the given format.

Create getters for all the attributes and setters for date and format. The conversion should happen when you set the format or the date. If the format is not correct, the conversion shouldn't happen. Additionally, create methods to output the date in the specified format, and constructors with only the date, with date and format, and a default constructor.

The accepted date formats are:

• DD/MM/YYYY
• DD Month YYYY
• DD.MM.YYYY

The accepted date formats are:

• DD/MM/YYYY
• DD Month YYYY
• DD.MM.YYYY

Expected Functions

import java.text.SimpleDateFormat;
import java.util.Date;

public class DateFormatter {
    private long timestamp;
    private String formattedDate;
    private String format;

    ...
}

Usage

Here is a possible ExerciseRunner.java to test your class:

public class ExerciseRunner {
    public static void main(String[] args) {
        DateFormatter df = new DateFormatter(1656374400, "DD/MM/YYYY");
        System.out.println(df.getFormattedDate());

        df.setFormat("dd.MM.yyyy");
        System.out.println(df.getFormattedDate());

        df.setDate(1672531200);
        System.out.println(df.getFormattedDate());

        df.setFormat("DD month yyyy");
        System.out.println(df.getFormattedDate());
    }
}

Expected Output

$ javac *.java -d build
$ java -cp build ExerciseRunner
28/06/2022
28.06.2022
31.12.2022
31 December 2022
$