GUI calander

[Habtamu Endalamaw]

hey guys i'm new to java and i need to make GUI calendar and i don't know how. so please help me and don't get confused with the variables cos they are Ethiopian words. here is the code

import java.util.Scanner;
class Calendar {

        int TheYearsOfTheWorld;
        boolean leap;
    private int computeFirstDay(int m, int y) {
        int zemeneBluy=5500;// The old era which is equivalent to the B.C
        int ameteAlem=zemeneBluy+y;//The old era plus the current year
        int meteneRabit=ameteAlem/4;
        int eleteKemer=(ameteAlem+meteneRabit)%7;//to calculate the days
        int start_date=(eleteKemer+(2*m)-2)%7;
        
        return start_date;
    }

    private boolean isLeapYear(int y) {
         if (y % 4 == 3) {
            leap = true;  } //  refers a year is leap year
         else {
            leap = false;}
    
        return false;
    }

    private int computeNumOfDays(int m, int y) {
        int days = 0;
        switch (m) {
            case 1:
                    days = 30;
                    break;
            case 2:  
                    days = 30;
                    break;
            case 3: 
                    days = 30;
                    break;
            case 4:
                    days = 30;
                    break;
            case 5:
                    days = 30;
                    break;
            case 6:  
                    days = 30;
                    break;
            case 7: 
                    days = 30;
                    break;
            case 8:
                    days = 30;
                    break;
            case 9:
                    days = 30;
                    break;
            case 10:  
                    days = 30;
                    break;
            case 11: 
                    days = 30;
                    break;
            case 12:
                    days = 30;
                    break;
            case 13:
                    if (leap == true)
                    {
                       days =6;
                       break; 
                    }
                    else{
                       days =5;
                       break;  
                    }
    }
     
        return days;
    }

   
    private void displayHeader(int m, int y) {
        switch (m)
        {
            case 1:
                System.out.println("\t\t  MESEKEREM,\t"+y);
                break;
            case 2:
                System.out.println("\t\t  TIKEMT,\t"+y);
                break;
            case 3:
                System.out.println("\t\t  HEDARE,\t"+y);
                break;
            case 4:
                System.out.println("\t\t  TAHESASE,\t"+y);
                break;
            case 5:
                System.out.println("\t\t  TERE,\t"+y);
                break;
            case 6:
                System.out.println("\t\t  YEKATITE,\t"+y);
                break;
            case 7:
                System.out.println("\t\t  MEGABITE,\t"+y);
                break;
            case 8:
                System.out.println("\t\t  MIYAZIYA ,\t"+y);
                break;
            case 9:
               System.out.println("\t\t GENEBOTE,\t"+y);
                break;
            case 10:
                System.out.println("\t\t  SENE,\t"+y);
                break;
            case 11:
                System.out.println("\t\t  HAMELE,\t"+y);
                break;
            case 12:
                System.out.println("\t\t  NEHASE,\t"+y);
                break;
            case 13:
                System.out.println("\t\t  Kuagme,\t"+y);
                break;
        }
        System.out.println("\t**************************************************");
        System.out.println("\tEh\tSe\tMa\tRe\tHa\tAr\tKi");
        System.out.println("\t**************************************************");
        
        
    }
      


    private void displayCalendar(long dayOne, int days, int month) {
        int count =0;
        for (int j=0;j<=dayOne;j++)
        {
            count +=1;
            System.out.print("\t");
            System.out.print(" ");
        }
        for (int i=1 ;i<=days;i++)
        {
            count +=1;
            System.out.print("\t");
            System.out.print(i);
            
            if (count ==7)
            {
                count=0;
                System.out.println("\n");
            }
        }
        
    }

    
    public static void main(String[] args) {
        int month = 0;
        int year = 0;

        Scanner input = new Scanner(System.in);

        System.out.print("Please enter a month number \u1200 : ");
        month = input.nextInt();

        System.out.print("Please enter a year number: ");
        year = input.nextInt();

        Calendar cal = new Calendar();
        boolean leap = cal.isLeapYear(year);


        int numOfDays = cal.computeNumOfDays(month, year);

  
        int dayOne = cal.computeFirstDay(month, year);

        cal.displayHeader(month, year);

        cal.displayCalendar(dayOne, numOfDays, month);
    }
}

[Darryl Burke]

I don't see anything GUI related in the code you posted. Perhaps you mean that you aren't aware of how to create a GUI? If that's so, you need to go through the Swing tutorial systematically.

And welcome to the Ranch!

[Tobias Leon]

Hi there Habtamu:

If you only need a calendar, maybe this code can help you, but is Java SWT.

Check this snippet:
http://www.java2s.com/Tutorial/Java/0280__SWT/CreateaDateTimecalendardateandtimeinadialog.htm

Regards !!!

[Campbell Ritchie]

I would suggest you need to go back to creating an EthiopianCalendar class and running it fom the command line before you try it in a GUI. It would appear from this that there is nothing available, but Googling for Java Ethiopian calendar, and this ad from Google might give you something to use instead.

I would suggest for your class, it looks confusing having that many fields. You should consider an enum for Ethiopian months instead of that switch block. You should avoid if (...) b = true; else b = false; It is bad style; see this link. It is also bad style and error prone to write == true or similar.