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Thread: PLEASE HELP

  1. #1
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    Default PLEASE HELP

    Design and implement a class called DayType that implements the day of the week in a program. The class DayType should store the day, such as Sun for Sunday, Mon for Monday and so on and so forth. The program should be able to perform the following operations on an object of type of
    DayType:
    Set the day
    Print the day
    Return the day
    Return the next day
    Return the previous day
    Calculate and return the day by adding and subtracting certain days to the current day (i.e if current day is Monday and we add 6 days, the day to be returned is Sunday. Similarly is we subtract 3 days, the day to be return is Friday)

    Instructions
    1. Define DayType class appropriate methods and constructor
    2. Your program should get the input/output via the main method and pass appropriate arguments through the class methods.
    3. Your program should continuously running until it receives a special signal (character/number) in which the program will exit.
    4. Compile and run
    5. Write a short description on what you have done in your program

  2. #2
    Administrator copeg's Avatar
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    Default Re: PLEASE HELP

    No one is going to do this for you. I suggest you site down, break the problems apart, and make an effort. If you have specific questions along the way post some code with specific questions about it.

  3. #3
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    Default Re: PLEASE HELP

    Quote Originally Posted by copeg View Post
    No one is going to do this for you. I suggest you site down, break the problems apart, and make an effort. If you have specific questions along the way post some code with specific questions about it.
    plz check my coding...
    public class DayType{
            final static int SUN = 0;
            final static int MON = 1;
            final static int TUE = 2;
            final static int WED = 3;
            final static int THU = 4;
            final static int FRI= 5;
            final static int SAT = 6;
     
            private int day;
     
            public DayType(int day) {
                    this.day = day;
            }
     
            public void setDay(int day){
                    this.day = day;
            }
     
            public int getDay() {
                    return day;
            }
     
            public void print() {
                    System.out.println(this.toString());
            }
            public int nextDay(){
                    int next;
                    next = day + 1;
                    return next;
            }
            public int previousDay(){
                    int prevDay;
                    prevDay = day - 1;
                    return prevDay;
            }
            public int addDays(int days) {
                    return (day + days) % 7;
            }
                    public String toString() {
                    switch (this.day) {
                    case SUN:
                            return "Sunday";
                    case MON:
                            return "Monday";
                    case TUE:
                            return "Tuesday";
                    case WED:
                            return "Wednesday";
                    case THU:
                            return "Thursday";
                    case FRI:
                            return "Friday";
                    case SAT:
                            return "Saturday";
                    }
                    return "";
            }       
            public static void main(String[] args) {
                    System.out.println("******Test Day******");
                    System.out.println();
                    System.out.print("Set day: ");
                    DayType d = new DayType(SUNDAY);
                    d.print();
                    System.out.print("Next day: ");
                    d.setDay(d.nextDay());
                    d.print();
                    System.out.print("Previous day: ");
                    d.setDay(d.previousDay());
                    d.print();
                    System.out.print("After 5 days: ");
                    d.setDay(d.addDays(5));
                    d.print();
            }       
    }
    Last edited by helloworld922; February 4th, 2011 at 11:29 PM.

  4. #4
    Super Moderator helloworld922's Avatar
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    Default Re: PLEASE HELP

    What happens when you run the program?
    What inputs are you providing, and what outputs is it giving back to you?
    What outputs do you expect to get back?
    Are you getting any exceptions? If so, please post the exception message.

  5. #5
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    Default Re: PLEASE HELP

    i'm using jcreator software....when i run this program ...they output is error....i dont know which part error...

  6. #6
    Super Moderator helloworld922's Avatar
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    Default Re: PLEASE HELP

    can you post the error message?

  7. #7
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    Default Re: PLEASE HELP

    --------------------Configuration: <Default>--------------------
    java.lang.NoClassDefFoundError: Day
    Caused by: java.lang.ClassNotFoundException: Day
    at java.net.URLClassLoader$1.run(URLClassLoader.java: 202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.j ava:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:3 07)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:2 48)
    Could not find the main class: Day. Program will exit.
    Exception in thread "main"
    Process completed.

  8. #8
    Member DanBrown's Avatar
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    Smile Re: PLEASE HELP

    DayType d = new DayType(SUNDAY);
    What is SUNDAY?

    if you mean this

    final static int SUN = 0;
    then please change the above SUNDAY TO SUN.

    After changing this it running fine, but one logical error in your previous day function.

    Secondly,

    if your current day in sun=0
    then previous day will be -1;


    so what it will print.


    public int previousDay(){
    int prevDay;
    prevDay = day - 1;
    return prevDay;
    }
    Thanks and Regards
    Dan Brown

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