Implement all the classes using Java programming language from the given UML Class diagram. Note: This problem requires you to submit only one class: MyDate.java. Do NOT include "public static void main()" method inside all of these classes. The classes would be tested, using the unit-testing framework JUnit 4. A class called MyDate, which models a date instance, is defined as shown in the class diagram. The MyDate class contains the following private instance variables: year (int): Between 1 to 9999. month (int): Between 1 (Jan) to 12 (Dec). day (int): Between 1 to 28|29|30|31, where the last day depends on the month and whether it is a leap year for Feb (28|29). It also contains the following public static final variables (drawn with underlined in the class diagram): MONTHS (String[]), DAYS (String[]), and DAY_IN_MONTHS (int[]): static variables, initialized as shown, which are used in the methods. The MyDate class has the following public static methods (drawn with underlined in the class diagram): isLeapYear(int year): returns true if the given year is a leap year. A year is a leap year if it is divisible by 4 but not by 100, or it is divisible by 400. isValidDate(int year, int month, int day): returns true if the given year, month, and day constitute a valid date. Assume that year is between 1 and 9999, month is between 1 (Jan) to 12 (Dec) and day shall be between 1 and 28|29|30|31 depending on the month and whether it is a leap year on Feb. getDayOfWeek(int year, int month, int day): returns the day of the week, where 0 for Sun, 1 for Mon, ..., 6 for Sat, for the given date. Assume that the date is valid. The MyDate class has one constructor, which takes 3 parameters: year, month and day. It shall invoke setDate() method (to be described later) to set the instance variables. The MyDate class has the following public methods: setDate(int year, int month, int day): It shall invoke the static method isValidDate() to verify that the given year, month and day constitute a valid date. (Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid year, month, or day!".) setYear(int year): It shall verify that the given year is between 1 and 9999. (Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid year!".) setMonth(int month): It shall verify that the given month is between 1 and 12. (Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid month!".) setDay(int day): It shall verify that the given day is between 1 and dayMax, where dayMax depends on the month and whether it is a leap year for Feb. (Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid month!".) getYear(), getMonth(), getDay(): return the value for the year, month and day, respectively. toString(): returns a date string in the format "xxxday d mmm yyyy", e.g., "Tuesday 14 Feb 2012". nextDay(): update this instance to the next day and return this instance. Take note that nextDay() for 31 Dec 2000 shall be 1 Jan 2001. nextMonth(): update this instance to the next month and return this instance. Take note that nextMonth() for 31 Oct 2012 shall be 30 Nov 2012. nextYear(): update this instance to the next year and return this instance. Take note that nextYear() for 29 Feb 2012 shall be 28 Feb 2013. (Advanced: throw an IllegalStateException with the message "Year out of range!" if year > 9999.) previousDay(), previousMonth(), previousYear(): similar to the above. Write the code for the MyDate class. Use the following test statements to test the MyDate class: MyDate d1 = new MyDate(2012, 2, 28); System.out.println(d1); // Tuesday 28 Feb 2012 System.out.println(d1.nextDay()); // Wednesday 29 Feb 2012 System.out.println(d1.nextDay()); // Thursday 1 Mar 2012 System.out.println(d1.nextMonth()); // Sunday 1 Apr 2012 System.out.println(d1.nextYear()); // Monday 1 Apr 2013 MyDate d2 = new MyDate(2012, 1, 2); System.out.println(d2); // Monday 2 Jan 2012 System.out.println(d2.previousDay()); // Sunday 1 Jan 2012 System.out.println(d2.previousDay()); // Saturday 31 Dec 2011 System.out.println(d2.previousMonth()); // Wednesday 30 Nov 2011 System.out.println(d2.previousYear()); // Tuesday 30 Nov 2010 MyDate d3 = new MyDate(2012, 2, 29); System.out.println(d3.previousYear()); // Monday 28 Feb 2011 // MyDate d4 = new MyDate(2099, 11, 31); // Invalid year, month, or day! // MyDate d5 = new MyDate(2011, 2, 29); // Invalid year, month, or day!
Implement all the classes using Java programming language from the given UML Class diagram. Note: This problem requires you to submit only one class: MyDate.java. Do NOT include "public static void main()" method inside all of these classes. The classes would be tested, using the unit-testing framework JUnit 4. A class called MyDate, which models a date instance, is defined as shown in the class diagram. The MyDate class contains the following private instance variables: year (int): Between 1 to 9999. month (int): Between 1 (Jan) to 12 (Dec). day (int): Between 1 to 28|29|30|31, where the last day depends on the month and whether it is a leap year for Feb (28|29). It also contains the following public static final variables (drawn with underlined in the class diagram): MONTHS (String[]), DAYS (String[]), and DAY_IN_MONTHS (int[]): static variables, initialized as shown, which are used in the methods. The MyDate class has the following public static methods (drawn with underlined in the class diagram): isLeapYear(int year): returns true if the given year is a leap year. A year is a leap year if it is divisible by 4 but not by 100, or it is divisible by 400. isValidDate(int year, int month, int day): returns true if the given year, month, and day constitute a valid date. Assume that year is between 1 and 9999, month is between 1 (Jan) to 12 (Dec) and day shall be between 1 and 28|29|30|31 depending on the month and whether it is a leap year on Feb. getDayOfWeek(int year, int month, int day): returns the day of the week, where 0 for Sun, 1 for Mon, ..., 6 for Sat, for the given date. Assume that the date is valid. The MyDate class has one constructor, which takes 3 parameters: year, month and day. It shall invoke setDate() method (to be described later) to set the instance variables. The MyDate class has the following public methods: setDate(int year, int month, int day): It shall invoke the static method isValidDate() to verify that the given year, month and day constitute a valid date. (Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid year, month, or day!".) setYear(int year): It shall verify that the given year is between 1 and 9999. (Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid year!".) setMonth(int month): It shall verify that the given month is between 1 and 12. (Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid month!".) setDay(int day): It shall verify that the given day is between 1 and dayMax, where dayMax depends on the month and whether it is a leap year for Feb. (Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid month!".) getYear(), getMonth(), getDay(): return the value for the year, month and day, respectively. toString(): returns a date string in the format "xxxday d mmm yyyy", e.g., "Tuesday 14 Feb 2012". nextDay(): update this instance to the next day and return this instance. Take note that nextDay() for 31 Dec 2000 shall be 1 Jan 2001. nextMonth(): update this instance to the next month and return this instance. Take note that nextMonth() for 31 Oct 2012 shall be 30 Nov 2012. nextYear(): update this instance to the next year and return this instance. Take note that nextYear() for 29 Feb 2012 shall be 28 Feb 2013. (Advanced: throw an IllegalStateException with the message "Year out of range!" if year > 9999.) previousDay(), previousMonth(), previousYear(): similar to the above. Write the code for the MyDate class. Use the following test statements to test the MyDate class: MyDate d1 = new MyDate(2012, 2, 28); System.out.println(d1); // Tuesday 28 Feb 2012 System.out.println(d1.nextDay()); // Wednesday 29 Feb 2012 System.out.println(d1.nextDay()); // Thursday 1 Mar 2012 System.out.println(d1.nextMonth()); // Sunday 1 Apr 2012 System.out.println(d1.nextYear()); // Monday 1 Apr 2013 MyDate d2 = new MyDate(2012, 1, 2); System.out.println(d2); // Monday 2 Jan 2012 System.out.println(d2.previousDay()); // Sunday 1 Jan 2012 System.out.println(d2.previousDay()); // Saturday 31 Dec 2011 System.out.println(d2.previousMonth()); // Wednesday 30 Nov 2011 System.out.println(d2.previousYear()); // Tuesday 30 Nov 2010 MyDate d3 = new MyDate(2012, 2, 29); System.out.println(d3.previousYear()); // Monday 28 Feb 2011 // MyDate d4 = new MyDate(2099, 11, 31); // Invalid year, month, or day! // MyDate d5 = new MyDate(2011, 2, 29); // Invalid year, month, or day!
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Implement all the classes using Java programming language from the given UML Class diagram.
Note: This problem requires you to submit only one class: MyDate.java.
Do NOT include "public static void main()" method inside all of these classes. The classes would be tested, using the unit-testing framework JUnit 4.
A class called MyDate, which models a date instance, is defined as shown in the class diagram.
The MyDate class contains the following private instance variables:
- year (int): Between 1 to 9999.
- month (int): Between 1 (Jan) to 12 (Dec).
- day (int): Between 1 to 28|29|30|31, where the last day depends on the month and whether it is a leap year for Feb (28|29).
It also contains the following public static final variables (drawn with underlined in the class diagram):
- MONTHS (String[]), DAYS (String[]), and DAY_IN_MONTHS (int[]): static variables, initialized as shown, which are used in the methods.
The MyDate class has the following public static methods (drawn with underlined in the class diagram):
- isLeapYear(int year): returns true if the given year is a leap year. A year is a leap year if it is divisible by 4 but not by 100, or it is divisible by 400.
- isValidDate(int year, int month, int day): returns true if the given year, month, and day constitute a valid date. Assume that year is between 1 and 9999, month is between 1 (Jan) to 12 (Dec) and day shall be between 1 and 28|29|30|31 depending on the month and whether it is a leap year on Feb.
- getDayOfWeek(int year, int month, int day): returns the day of the week, where 0 for Sun, 1 for Mon, ..., 6 for Sat, for the given date. Assume that the date is valid.
-
The MyDate class has one constructor, which takes 3 parameters: year, month and day. It shall invoke setDate() method (to be described later) to set the instance variables.
The MyDate class has the following public methods:
- setDate(int year, int month, int day): It shall invoke the static method isValidDate() to verify that the given year, month and day constitute a valid date.
(Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid year, month, or day!".) - setYear(int year): It shall verify that the given year is between 1 and 9999.
(Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid year!".) - setMonth(int month): It shall verify that the given month is between 1 and 12.
(Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid month!".) - setDay(int day): It shall verify that the given day is between 1 and dayMax, where dayMax depends on the month and whether it is a leap year for Feb.
(Advanced: Otherwise, it shall throw an IllegalArgumentException with the message "Invalid month!".) - getYear(), getMonth(), getDay(): return the value for the year, month and day, respectively.
- toString(): returns a date string in the format "xxxday d mmm yyyy", e.g., "Tuesday 14 Feb 2012".
- nextDay(): update this instance to the next day and return this instance. Take note that nextDay() for 31 Dec 2000 shall be 1 Jan 2001.
- nextMonth(): update this instance to the next month and return this instance. Take note that nextMonth() for 31 Oct 2012 shall be 30 Nov 2012.
- nextYear(): update this instance to the next year and return this instance. Take note that nextYear() for 29 Feb 2012 shall be 28 Feb 2013.
(Advanced: throw an IllegalStateException with the message "Year out of range!" if year > 9999.) - previousDay(), previousMonth(), previousYear(): similar to the above.
Write the code for the MyDate class.
Use the following test statements to test the MyDate class:
MyDate d1 = new MyDate(2012, 2, 28); System.out.println(d1); // Tuesday 28 Feb 2012 System.out.println(d1.nextDay()); // Wednesday 29 Feb 2012 System.out.println(d1.nextDay()); // Thursday 1 Mar 2012 System.out.println(d1.nextMonth()); // Sunday 1 Apr 2012 System.out.println(d1.nextYear()); // Monday 1 Apr 2013 MyDate d2 = new MyDate(2012, 1, 2); System.out.println(d2); // Monday 2 Jan 2012 System.out.println(d2.previousDay()); // Sunday 1 Jan 2012 System.out.println(d2.previousDay()); // Saturday 31 Dec 2011 System.out.println(d2.previousMonth()); // Wednesday 30 Nov 2011 System.out.println(d2.previousYear()); // Tuesday 30 Nov 2010 MyDate d3 = new MyDate(2012, 2, 29); System.out.println(d3.previousYear()); // Monday 28 Feb 2011 // MyDate d4 = new MyDate(2099, 11, 31); // Invalid year, month, or day! // MyDate d5 = new MyDate(2011, 2, 29); // Invalid year, month, or day! - setDate(int year, int month, int day): It shall invoke the static method isValidDate() to verify that the given year, month and day constitute a valid date.
![MyDate
-year:int
-month:int
- day:int
+MONTHS:String[]
{"Jan", "Feb","Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}
+DAYS: String[]
{"Sunday", "Monday", "Tuesday","Wednesday",
"Thursday", "Friday", "Saturday"}
+DAYS IN MONTHS:int[]
{31,28,31, 30,31, 30,31,31, 30, 31, 30, 31}
+isleapYear (year:int):boolean
+isvalidDate(year:int,month:int, day:int):boolean
+getDayofWeek(year:int,month:int, day:int):int
+MyDate(year:int, month: int, day:int)
+setDate(year:int, month:int, day:int):void
+getYear ():int
+getMonth():int
+getDay (): int
+setYear(year:int): void
+setMonth (month:int):void
+setDay(day:int): void
+tostring():String •
+nextDay(): MyDate
+nextMonth ():MyDate
+nextYear (): MyDate
+previousDay (): MyDate
+previousMonth():MyDate
+previousYear():MyDate
"xxxday d mmm yyyy"
e.g., "Tuesday 14 Feb 2012"](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F92c25de7-41c1-4258-8bc4-5b5f2e779f5f%2F808e8618-fdc9-4089-9485-e9b362012b3a%2Fdt5krzk_processed.jpeg&w=3840&q=75)
Transcribed Image Text:MyDate
-year:int
-month:int
- day:int
+MONTHS:String[]
{"Jan", "Feb","Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}
+DAYS: String[]
{"Sunday", "Monday", "Tuesday","Wednesday",
"Thursday", "Friday", "Saturday"}
+DAYS IN MONTHS:int[]
{31,28,31, 30,31, 30,31,31, 30, 31, 30, 31}
+isleapYear (year:int):boolean
+isvalidDate(year:int,month:int, day:int):boolean
+getDayofWeek(year:int,month:int, day:int):int
+MyDate(year:int, month: int, day:int)
+setDate(year:int, month:int, day:int):void
+getYear ():int
+getMonth():int
+getDay (): int
+setYear(year:int): void
+setMonth (month:int):void
+setDay(day:int): void
+tostring():String •
+nextDay(): MyDate
+nextMonth ():MyDate
+nextYear (): MyDate
+previousDay (): MyDate
+previousMonth():MyDate
+previousYear():MyDate
"xxxday d mmm yyyy"
e.g., "Tuesday 14 Feb 2012"
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