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Thread: JOptionPane Question/ Printing

  1. #1
    Junior Member
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    Aug 2009
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    Default JOptionPane Question/ Printing

    I am not sure what I am doing that is causing it not to print. I havent completly finished the program yet, I have decided to just try and get it to print right first...haha. My math was right but it wouldnt loop once I set it up to loop it won't print...any guidance would be appreciated.

    This is what I am working on.....right now I am just trying to get it to print message1 when the input is zero. Any help would be appreciated. Here is what I have so far.

    import java.util.Scanner;//program that uses a class scanner
    import java.lang.Float;
    import javax.swing.JOptionPane; //Dialog Boxes
    //Program that reads numbers 
    public class NumberCounter
    	public static void main(String args[])
    		Scanner input = new Scanner( System.in );
    		int Entries = 1;    //Total of all numbers entered
    		int Total = 0;   //Total sum of numbers
    		int Large;  //Largest number in group
    		int Small;  //Smallest number in group
    		float Average;        //Average of numbers entered	
    		String counter=	
    		JOptionPane.showInputDialog("Input numbers to check:");	
    		float Number1 = Float.parseFloat(counter);	
    		Entries ++;
    		Total += Number1;
                	                     Average = Total / Entries;
    	}while(Number1 != 0);
                         String message1=
    		String.format("Total number of Entries : %d\n Numbers entered: %.0f\n Average of all numbers:%.0d\n 
                                              Total sum of all numbers:%d", Entries, Number1, Average, Total);
    		JOptionPane.showMessageDialog(null, message1);
    	} //end method main
    } //end class NumberCounter
    Last edited by 03EVOAWD; September 3rd, 2009 at 01:56 PM.

  2. #2
    Java kindergarten chronoz13's Avatar
    Join Date
    Mar 2009
    Thanked 30 Times in 28 Posts

    Smile Re: JOptionPane Question/ Printing

    i edited your code sir...
    import javax.swing.*;
    public class LoopSample8
         public static void main(String[] arggs)
            int keyIn1,
            float  average;
            int numberOfEntries = 0;
            sum = 0;
            int loopKey = 1;
            //you have to accept a single data first outside the loop
            //the data in this input will serve as a comparison for the largest and smallest
            keyIn1 = Integer.parseInt(JOptionPane.showInputDialog("Enter A Number"));
            largest = keyIn1;    //to make comparison for the next numbers you have to assign
            smallest = keyIn1;   //the first data into these variables
            sum = keyIn1;        //this is fine if you not assign it in this variable sum
                                 //   "BUT" it depends on the problem of the program
                //get the next input values.. until it meets the condition
                keyIn2 = Integer.parseInt(JOptionPane.showInputDialog("Enter A Number"));
                sum = sum + keyIn2;
                //to get how many entries were entered you have to compare it to the data that was keyed-in in keyIn2
                //no matter what is the value in keyIn2
                //it will add an Entry for the variable numberOfEntries
                if(numberOfEntries <= keyIn2 || numberOfEntries >= keyIn2 || numberOfEntries != keyIn2)
                    numberOfEntries = numberOfEntries + 1;
                 *compare the values of keyIn2 to the largest that has already the value of keyIn1
                 *you have to make a twice condition
                 *make an expression that will not compare the value of keyIn2 in "0" (zero)
                 *1.)your zero is the terminating value(the condition to execute)
                 *2.)if you not do this expression the SMALLEST NUMBER will always be "0"(zero)
                if(keyIn2 <= smallest && keyIn2 !=0)
                    smallest = keyIn2;
                //same here
                else if(keyIn2 >= largest && keyIn2 !=0)
                    largest = keyIn2;
            while(keyIn2 != 0); //the program will continue to loop until you "enter" "0" zero
            /*we have to make another condition for the keyIn1 here,(outside the loop)
             *because the loop doesnt do anything about the objects outside of it
             *if you don not make a condition for an entry here
             *you will miss a single entry
             *because the loop will only provide you the values that are inside of it
            if(numberOfEntries <= keyIn1 || numberOfEntries >= keyIn1 || numberOfEntries != keyIn1)
                    numberOfEntries = numberOfEntries + 1;
            //you have to determine the average here not inside for some valid logical state
           // if it is inside the loop it will get average continuesly
            average = sum / (numberOfEntries - 1);
            JOptionPane.showMessageDialog(null,"Entries:  " + numberOfEntries + "\n" +
                                               "Sum:  " + sum + "\n" +
                                               //"Average:  " + average + "\n" +
                                               "Smallest:  " + smallest + "\n" +
                                               "Largest:  " + largest);

    you have Scanner class .. why is it there? its only use for console input..

    Last edited by chronoz13; August 28th, 2009 at 02:30 AM.

  3. The Following User Says Thank You to chronoz13 For This Useful Post:

    03EVOAWD (August 31st, 2009)

  4. #3
    Junior Member
    Join Date
    Aug 2009
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    Default Re: JOptionPane Question/ Printing

    Thanks for the help I was able to figure out what I was doing wrong.....
    I really appreciate how you broke it down in the text for me that went a long way for me....thanks again

    I have scanner class just because I am new to java and am still learning.
    Last edited by 03EVOAWD; September 3rd, 2009 at 07:14 AM.

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