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Thread: Need help with an Array!

  1. #1
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    Default Need help with an Array!

    How do I get the variable checkNumber to read from the input and exit if the user enters a value less than 0? I initially created the array to accept 10 integer values and then average and sum them using JOptionPane. Now I would like the user to be able to exit the program if a negative value is entered in the input. Here's how it looks so far and I understand the if statement is where I am losing it.

    import java.text.NumberFormat;
    import java.text.DecimalFormat;
    import javax.swing.*;
     
    class originalArray
    {
        public static void main(String args[])
        {
            int checkNumber;
            int inputArray[] = new int[10]; 
            int arrayLength = inputArray.length;
            Boolean keepRunning = true;
     
                while (keepRunning)
                {
                    for(int i=0;i<arrayLength;i++) 
                    inputArray[i]=Integer.parseInt(JOptionPane.showInputDialog("Enter integer for array location "+i+" :")); 
                    //checkNumber = inputArray;
                    if (checkNumber <0)
                        {
                            System.exit(0);
                        }   
                    else           
                        {
                            int sum = 0;
                            String loc = "";
     
                            for(int i=0; i<arrayLength; i++)
                            {
                                sum+= inputArray[i];
                                loc+= "Array location " + i + " is " + inputArray[i] + "\n";
                            }
     
                                double avg;
                                NumberFormat formatter = new DecimalFormat ("#0.000");
                                avg =(double)sum/10;
     
     
                                JOptionPane.showMessageDialog (null, loc + "The sum or the array is " + sum + "\n The average of the array is " + formatter.format(avg));
                            }
                        }
                  }       
     
    }


  2. #2
    Administrator copeg's Avatar
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    Default Re: Need help with an Array!

     inputArray[i]=Integer.parseInt(JOptionPane.showInputDialog("Enter integer for array location "+i+" :")); 
     if ( inputArray[i] < 0 ){
        return;//or System.exit(0);
    }

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