Programming Forums > Application Development > Java

kewlgeye · Apr 30th, 2008, 3:33 PM

I received an error. I have posted a pic of the errors that I am receiving. Can someone please have a look at this and show me what I am doing wrong? Here is the code and then the pic.

(Toggle Plain Text)

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class StaffingProgram extends JFrame
{
	private JLabel resultAL, resultBL, resultCL, outputAL, outputBL, outputCL;
	private JTextField resultATF, resultBTF, resultCTF, outputATF, outputBTF, outputCTF;
	private JButton calculateB, exitB;
	private CalculateButtonHandler cbHandler;
	private ExitButtonHandler ebHandler;
	

	private static final int WIDTH = 900;
	private static final int HEIGHT = 600;

	public StaffingProgram()
	{
	
		
		resultAL = new JLabel("Please enter the number of employees presently on duty at location A: ", 
			SwingConstants.RIGHT);
		resultBL = new JLabel("Please enter the number of employees presently on duty at location B: ",
			SwingConstants.RIGHT);
		resultCL = new JLabel("Please enter the number of employees presently on duty at location C: ",
			SwingConstants.RIGHT);
		outputAL = new JLabel("Number of employees under or over for location A: ",
			SwingConstants.RIGHT);
		outputBL = new JLabel("Number of employees under or over for location B: ",
			SwingConstants.RIGHT);
		outputCL = new JLabel("Number of employees under or over for location C: ",
			SwingConstants.RIGHT);
		
		
		
		
		
		
		resultATF = new JTextField(10);
		resultBTF = new JTextField(10);
		resultCTF = new JTextField(10);
		outputATF = new JTextField(10);
		outputBTF = new JTextField(10);
		outputCTF = new JTextField(10);
		
		
		

		calculateB = new JButton("Calculate");
		cbHandler = new CalculateButtonHandler();
		calculateB.addActionListener(cbHandler);

		exitB = new JButton("Exit");
		ebHandler = new ExitButtonHandler();
		exitB.addActionListener(ebHandler);
		

		setTitle("Staffing Level Calculations");

		Container pane = getContentPane();

		pane.setLayout(new GridLayout(7, 2));

		
		pane.add(resultAL);
		pane.add(resultATF);
		pane.add(resultBL);
		pane.add(resultBTF);
		pane.add(resultCL);
		pane.add(resultCTF);
		pane.add(outputAL);
		pane.add(outputATF);
		pane.add(outputBL);
		pane.add(outputBTF);
		pane.add(outputCL);
		pane.add(outputCTF);
		pane.add(calculateB);
		pane.add(exitB);

		setSize(WIDTH, HEIGHT);
		setVisible(true);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
	}

	private class CalculateButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			double resulta, resultb, resultc;
			
			
			resulta = Double.parseDouble(resultATF.getText());
			resultb = Double.parseDouble(resultBTF.getText());
			resultc = Double.parseDouble(resultCTF.getText());
			
	try
	{
			if (resulta > 5)
			{resulta = resulta - 5;
			outputATF.setText("You are overstaffed by " + resulta);}
			if (resulta < 5)
			{resulta = 5 - resulta;
			outputATF.setText("You are understaffed by " + resulta);}
			if (resulta == 5)
			{outputATF.setText("Your staffing is sufficient");}
	
			else
			{
			throw new TheException(); //calls
            		}
		
		

			if (resultb > 8)
			{resultb = resultb - 8;
			outputBTF.setText("You are overstaffed by " + resultb);
			if (resultb < 8)
			resultb = 8 - resultb;
			outputBTF.setText("You are understaffed by " + resultb);
			if (resultb == 8)
			outputBTF.setText("Your staffing is sufficient");
			
			else
			{
			throw new TheException(); //calls
            		}	
			

			if (resultc > 10)
			{resultc = resultc - 10;
			outputCTF.setText("You are overstaffed by " + resultc);}
			if (resultc < 10)
			{resultc = 10 - resultc;
			outputCTF.setText("You are understaffed by " + resultc);}
			if (resultc == 10)
			{outputCTF.setText("Your staffing is sufficient");}

			else
			{
			throw new TheException(); //calls
            		}
	}
}
	catch (TheException e)
        {
            System.out.println("Illegal input caught, please enter a number");
        }

        System.out.println();
        System.out.println("Program Ending!");
	}
	}
}

	private class ExitButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			System.exit(0);
		}
	}
	
	public static void main(String[] args) throws IOException
	{
		StaffingProgram rectObject = new StaffingProgram();
	}
}

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class StaffingProgram extends JFrame
{
	private JLabel resultAL, resultBL, resultCL, outputAL, outputBL, outputCL;
	private JTextField resultATF, resultBTF, resultCTF, outputATF, outputBTF, outputCTF;
	private JButton calculateB, exitB;
	private CalculateButtonHandler cbHandler;
	private ExitButtonHandler ebHandler;
	

	private static final int WIDTH = 900;
	private static final int HEIGHT = 600;

	public StaffingProgram()
	{
	
		
		resultAL = new JLabel("Please enter the number of employees presently on duty at location A: ", 
			SwingConstants.RIGHT);
		resultBL = new JLabel("Please enter the number of employees presently on duty at location B: ",
			SwingConstants.RIGHT);
		resultCL = new JLabel("Please enter the number of employees presently on duty at location C: ",
			SwingConstants.RIGHT);
		outputAL = new JLabel("Number of employees under or over for location A: ",
			SwingConstants.RIGHT);
		outputBL = new JLabel("Number of employees under or over for location B: ",
			SwingConstants.RIGHT);
		outputCL = new JLabel("Number of employees under or over for location C: ",
			SwingConstants.RIGHT);
		
		
		
		
		
		
		resultATF = new JTextField(10);
		resultBTF = new JTextField(10);
		resultCTF = new JTextField(10);
		outputATF = new JTextField(10);
		outputBTF = new JTextField(10);
		outputCTF = new JTextField(10);
		
		
		

		calculateB = new JButton("Calculate");
		cbHandler = new CalculateButtonHandler();
		calculateB.addActionListener(cbHandler);

		exitB = new JButton("Exit");
		ebHandler = new ExitButtonHandler();
		exitB.addActionListener(ebHandler);
		

		setTitle("Staffing Level Calculations");

		Container pane = getContentPane();

		pane.setLayout(new GridLayout(7, 2));

		
		pane.add(resultAL);
		pane.add(resultATF);
		pane.add(resultBL);
		pane.add(resultBTF);
		pane.add(resultCL);
		pane.add(resultCTF);
		pane.add(outputAL);
		pane.add(outputATF);
		pane.add(outputBL);
		pane.add(outputBTF);
		pane.add(outputCL);
		pane.add(outputCTF);
		pane.add(calculateB);
		pane.add(exitB);

		setSize(WIDTH, HEIGHT);
		setVisible(true);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
	}

	private class CalculateButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			double resulta, resultb, resultc;
			
			
			resulta = Double.parseDouble(resultATF.getText());
			resultb = Double.parseDouble(resultBTF.getText());
			resultc = Double.parseDouble(resultCTF.getText());
			
	try
	{
			if (resulta > 5)
			{resulta = resulta - 5;
			outputATF.setText("You are overstaffed by " + resulta);}
			if (resulta < 5)
			{resulta = 5 - resulta;
			outputATF.setText("You are understaffed by " + resulta);}
			if (resulta == 5)
			{outputATF.setText("Your staffing is sufficient");}
	
			else
			{
			throw new TheException(); //calls
            		}
		
		

			if (resultb > 8)
			{resultb = resultb - 8;
			outputBTF.setText("You are overstaffed by " + resultb);
			if (resultb < 8)
			resultb = 8 - resultb;
			outputBTF.setText("You are understaffed by " + resultb);
			if (resultb == 8)
			outputBTF.setText("Your staffing is sufficient");
			
			else
			{
			throw new TheException(); //calls
            		}	
			

			if (resultc > 10)
			{resultc = resultc - 10;
			outputCTF.setText("You are overstaffed by " + resultc);}
			if (resultc < 10)
			{resultc = 10 - resultc;
			outputCTF.setText("You are understaffed by " + resultc);}
			if (resultc == 10)
			{outputCTF.setText("Your staffing is sufficient");}

			else
			{
			throw new TheException(); //calls
            		}
	}
}
	catch (TheException e)
        {
            System.out.println("Illegal input caught, please enter a number");
        }

        System.out.println();
        System.out.println("Program Ending!");
	}
	}
}

	private class ExitButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			System.exit(0);
		}
	}
	
	public static void main(String[] args) throws IOException
	{
		StaffingProgram rectObject = new StaffingProgram();
	}
}

Ezzaral · Apr 30th, 2008, 4:16 PM

ExitButtonHandler and main() are defined outside of your class body. Check your braces. You also have a missing brace on this if() block and no block at all on the (resultb < 8) statement

(Toggle Plain Text)

	if (resultb > 8)
	{resultb = resultb - 8;

. Attention to indentation and blocking standards will go a long way towards preventing these kinds of errors

(Toggle Plain Text)

	if (resultb > 8){
             resultb = resultb - 8;
             outputBTF.setText("You are overstaffed by " + resultb);
        }
	if (resultb < 8){
             resultb = 8 - resultb;
             outputBTF.setText("You are understaffed by " + resultb);
        }
	if (resultb == 8) {
            outputBTF.setText("Your staffing is sufficient");
        }

kewlgeye · May 1st, 2008, 1:51 PM

Ok, I fixed my brackets, and also had to give the event the ev name instead of"e" because it was already being used. I imported the import java.io.* statement and added the class extends section of the code.

I still have an error, when I enter the numbers in. I receive the catch message, and I shouldn't because I am entering a number. Whats wrong? I attached a picture. I am happy though that I can at least see my program now.

Have a look please.

(Toggle Plain Text)

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class StaffingProgram extends JFrame
{
	private JLabel resultAL, resultBL, resultCL, outputAL, outputBL, outputCL;
	private JTextField resultATF, resultBTF, resultCTF, outputATF, outputBTF, outputCTF;
	private JButton calculateB, exitB;
	private CalculateButtonHandler cbHandler;
	private ExitButtonHandler ebHandler;
	

	private static final int WIDTH = 900;
	private static final int HEIGHT = 600;

	public StaffingProgram()
	{
	
		
		resultAL = new JLabel("Please enter the number of employees presently on duty at location A: ", 
			SwingConstants.RIGHT);
		resultBL = new JLabel("Please enter the number of employees presently on duty at location B: ",
			SwingConstants.RIGHT);
		resultCL = new JLabel("Please enter the number of employees presently on duty at location C: ",
			SwingConstants.RIGHT);
		outputAL = new JLabel("Number of employees under or over for location A: ",
			SwingConstants.RIGHT);
		outputBL = new JLabel("Number of employees under or over for location B: ",
			SwingConstants.RIGHT);
		outputCL = new JLabel("Number of employees under or over for location C: ",
			SwingConstants.RIGHT);
		
		
		
		
		
		
		resultATF = new JTextField(10);
		resultBTF = new JTextField(10);
		resultCTF = new JTextField(10);
		outputATF = new JTextField(10);
		outputBTF = new JTextField(10);
		outputCTF = new JTextField(10);
		
		
		

		calculateB = new JButton("Calculate");
		cbHandler = new CalculateButtonHandler();
		calculateB.addActionListener(cbHandler);

		exitB = new JButton("Exit");
		ebHandler = new ExitButtonHandler();
		exitB.addActionListener(ebHandler);
		

		setTitle("Staffing Level Calculations");

		Container pane = getContentPane();

		pane.setLayout(new GridLayout(7, 2));

		
		pane.add(resultAL);
		pane.add(resultATF);
		pane.add(resultBL);
		pane.add(resultBTF);
		pane.add(resultCL);
		pane.add(resultCTF);
		pane.add(outputAL);
		pane.add(outputATF);
		pane.add(outputBL);
		pane.add(outputBTF);
		pane.add(outputCL);
		pane.add(outputCTF);
		pane.add(calculateB);
		pane.add(exitB);

		setSize(WIDTH, HEIGHT);
		setVisible(true);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
	}

	private class CalculateButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			double resulta, resultb, resultc;
			
			
			resulta = Double.parseDouble(resultATF.getText());
			resultb = Double.parseDouble(resultBTF.getText());
			resultc = Double.parseDouble(resultCTF.getText());
			
	try
	{
			if (resulta > 5)
			{resulta = resulta - 5;
			outputATF.setText("You are overstaffed by " + resulta);}
			if (resulta < 5)
			{resulta = 5 - resulta;
			outputATF.setText("You are understaffed by " + resulta);}
			if (resulta == 5)
			{outputATF.setText("Your staffing is sufficient");}
			
			
			if (resultb > 8){
			resultb = resultb - 8;
			outputBTF.setText("You are overstaffed by " + resultb);
			}
			if (resultb < 8){
			resultb = 8 - resultb;
			outputBTF.setText("You are understaffed by " + resultb);
			}
			if (resultb == 8){
			outputBTF.setText("Your staffing is sufficient");
			}
			
						

			if (resultc > 10){
			resultc = resultc - 10;
			outputCTF.setText("You are overstaffed by " + resultc);
			}
			if (resultc < 10){
			resultc = 10 - resultc;
			outputCTF.setText("You are understaffed by " + resultc);
			}
			if (resultc == 10){
			outputCTF.setText("Your staffing is sufficient");
			}

			else
			{
			throw new TheException(); //calls
            		}
	}
			catch (TheException ev)
        		{
            		outputATF.setText("" +ev + " You must enter a number");
       			}

		}
	}


class TheException extends Exception
{
	public String toString()
	{
		return "Illegal";
	}
}



	private class ExitButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			System.exit(0);
		}
	}
	
	public static void main(String[] args) throws IOException
	{
		StaffingProgram rectObject = new StaffingProgram();
	}
}

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class StaffingProgram extends JFrame
{
	private JLabel resultAL, resultBL, resultCL, outputAL, outputBL, outputCL;
	private JTextField resultATF, resultBTF, resultCTF, outputATF, outputBTF, outputCTF;
	private JButton calculateB, exitB;
	private CalculateButtonHandler cbHandler;
	private ExitButtonHandler ebHandler;
	

	private static final int WIDTH = 900;
	private static final int HEIGHT = 600;

	public StaffingProgram()
	{
	
		
		resultAL = new JLabel("Please enter the number of employees presently on duty at location A: ", 
			SwingConstants.RIGHT);
		resultBL = new JLabel("Please enter the number of employees presently on duty at location B: ",
			SwingConstants.RIGHT);
		resultCL = new JLabel("Please enter the number of employees presently on duty at location C: ",
			SwingConstants.RIGHT);
		outputAL = new JLabel("Number of employees under or over for location A: ",
			SwingConstants.RIGHT);
		outputBL = new JLabel("Number of employees under or over for location B: ",
			SwingConstants.RIGHT);
		outputCL = new JLabel("Number of employees under or over for location C: ",
			SwingConstants.RIGHT);
		
		
		
		
		
		
		resultATF = new JTextField(10);
		resultBTF = new JTextField(10);
		resultCTF = new JTextField(10);
		outputATF = new JTextField(10);
		outputBTF = new JTextField(10);
		outputCTF = new JTextField(10);
		
		
		

		calculateB = new JButton("Calculate");
		cbHandler = new CalculateButtonHandler();
		calculateB.addActionListener(cbHandler);

		exitB = new JButton("Exit");
		ebHandler = new ExitButtonHandler();
		exitB.addActionListener(ebHandler);
		

		setTitle("Staffing Level Calculations");

		Container pane = getContentPane();

		pane.setLayout(new GridLayout(7, 2));

		
		pane.add(resultAL);
		pane.add(resultATF);
		pane.add(resultBL);
		pane.add(resultBTF);
		pane.add(resultCL);
		pane.add(resultCTF);
		pane.add(outputAL);
		pane.add(outputATF);
		pane.add(outputBL);
		pane.add(outputBTF);
		pane.add(outputCL);
		pane.add(outputCTF);
		pane.add(calculateB);
		pane.add(exitB);

		setSize(WIDTH, HEIGHT);
		setVisible(true);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
	}

	private class CalculateButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			double resulta, resultb, resultc;
			
			
			resulta = Double.parseDouble(resultATF.getText());
			resultb = Double.parseDouble(resultBTF.getText());
			resultc = Double.parseDouble(resultCTF.getText());
			
	try
	{
			if (resulta > 5)
			{resulta = resulta - 5;
			outputATF.setText("You are overstaffed by " + resulta);}
			if (resulta < 5)
			{resulta = 5 - resulta;
			outputATF.setText("You are understaffed by " + resulta);}
			if (resulta == 5)
			{outputATF.setText("Your staffing is sufficient");}
			
			
			if (resultb > 8){
			resultb = resultb - 8;
			outputBTF.setText("You are overstaffed by " + resultb);
			}
			if (resultb < 8){
			resultb = 8 - resultb;
			outputBTF.setText("You are understaffed by " + resultb);
			}
			if (resultb == 8){
			outputBTF.setText("Your staffing is sufficient");
			}
			
						

			if (resultc > 10){
			resultc = resultc - 10;
			outputCTF.setText("You are overstaffed by " + resultc);
			}
			if (resultc < 10){
			resultc = 10 - resultc;
			outputCTF.setText("You are understaffed by " + resultc);
			}
			if (resultc == 10){
			outputCTF.setText("Your staffing is sufficient");
			}

			else
			{
			throw new TheException(); //calls
            		}
	}
			catch (TheException ev)
        		{
            		outputATF.setText("" +ev + " You must enter a number");
       			}

		}
	}


class TheException extends Exception
{
	public String toString()
	{
		return "Illegal";
	}
}



	private class ExitButtonHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			System.exit(0);
		}
	}
	
	public static void main(String[] args) throws IOException
	{
		StaffingProgram rectObject = new StaffingProgram();
	}
}

attached picture

Ezzaral · May 1st, 2008, 2:38 PM

This section is going to throw your exception if resultc is not equal to 10. I doubt that is the intent

(Toggle Plain Text)

			if (resultc == 10){
			outputCTF.setText("Your staffing is sufficient");
			}

			else
			{
			throw new TheException(); //calls
            		}

kewlgeye · May 1st, 2008, 5:41 PM

Quote:

Originally Posted by Ezzaral

This section is going to throw your exception if resultc is not equal to 10. I doubt that is the intent

(Toggle Plain Text)

			if (resultc == 10){
			outputCTF.setText("Your staffing is sufficient");
			}

			else
			{
			throw new TheException(); //calls
            		}

This isn't my intent. What I am trying to do is perform the calculations based on my if statements, and if anything else is entered like a ., a letter, or anything besides a number, it should be caught and display the sentence in the outputbox "Illegal entry, please enter a number"

Any ideas?

Freaky Chris · May 2nd, 2008, 1:48 AM

instead of using all if statements you use elseif?
and then leave your else statement at the end.

Chris

kewlgeye · May 2nd, 2008, 8:39 AM

I figured it out.

I needed to use the NumberFormatException and delete the extends section and also parse within the try statement to have something to try with. Here is what I did.

(Toggle Plain Text)

try
	{
			resulta = Integer.parseInt(resultATF.getText());
			resultb = Integer.parseInt(resultBTF.getText());
			resultc = Integer.parseInt(resultCTF.getText());
			
			if (resulta > 5){
			resulta = resulta - 5;
			outputATF.setText("You are overstaffed by " + resulta);
			}
			else if (resulta < 5){
			resulta = 5 - resulta;
			outputATF.setText("You are understaffed by " + resulta);
			}
			else if (resulta == 5){
			outputATF.setText("Your staffing is sufficient");
			}
			
			
			if (resultb > 8){
			resultb = resultb - 8;
			outputBTF.setText("You are overstaffed by " + resultb);
			}
			else if (resultb < 8){
			resultb = 8 - resultb;
			outputBTF.setText("You are understaffed by " + resultb);
			}
			else if (resultb == 8){
			outputBTF.setText("Your staffing is sufficient");
			}
			
						

			if (resultc > 10){
			resultc = resultc - 10;
			outputCTF.setText("You are overstaffed by " + resultc);
			}
			else if (resultc < 10){
			resultc = 10 - resultc;
			outputCTF.setText("You are understaffed by " + resultc);
			}
			else if (resultc == 10){
			outputCTF.setText("Your staffing is sufficient");
			}

			else
			{
			throw new NumberFormatException(); //calls
            		}
	}
			catch (NumberFormatException ev)
        		{
			JOptionPane.showMessageDialog(null, "" +ev + " You must enter a number", "Invalid Input", 		

			JOptionPane.INFORMATION_MESSAGE);
       			}

Ezzaral · May 2nd, 2008, 1:49 PM

Your try-catch on NumberFormatException really only needs to be around this portion

(Toggle Plain Text)

			resulta = Integer.parseInt(resultATF.getText());
			resultb = Integer.parseInt(resultBTF.getText());
			resultc = Integer.parseInt(resultCTF.getText());

because that is where the string values are converted to ints. The rest of the code merely operates on those int values and really has no bearing on NumberFormatException. It certainly doesn't need to throw one explicitly.

Apr 30th, 2008, 4:16 PM	#2
Ezzaral Newbie Join Date: Apr 2008 Posts: 7 Rep Power: 0	Re: Java Error Messages ExitButtonHandler and main() are defined outside of your class body. Check your braces. You also have a missing brace on this if() block and no block at all on the (resultb < 8) statement (Toggle Plain Text) if (resultb > 8) {resultb = resultb - 8; if (resultb > 8) {resultb = resultb - 8; . Attention to indentation and blocking standards will go a long way towards preventing these kinds of errors (Toggle Plain Text) if (resultb > 8){ resultb = resultb - 8; outputBTF.setText("You are overstaffed by " + resultb); } if (resultb < 8){ resultb = 8 - resultb; outputBTF.setText("You are understaffed by " + resultb); } if (resultb == 8) { outputBTF.setText("Your staffing is sufficient"); } if (resultb > 8){ resultb = resultb - 8; outputBTF.setText("You are overstaffed by " + resultb); } if (resultb < 8){ resultb = 8 - resultb; outputBTF.setText("You are understaffed by " + resultb); } if (resultb == 8) { outputBTF.setText("Your staffing is sufficient"); }

May 1st, 2008, 2:38 PM	#4
Ezzaral Newbie Join Date: Apr 2008 Posts: 7 Rep Power: 0	Re: Java Error Messages This section is going to throw your exception if resultc is not equal to 10. I doubt that is the intent (Toggle Plain Text) if (resultc == 10){ outputCTF.setText("Your staffing is sufficient"); } else { throw new TheException(); //calls } if (resultc == 10){ outputCTF.setText("Your staffing is sufficient"); } else { throw new TheException(); //calls }

May 2nd, 2008, 1:48 AM	#6
Freaky Chris Hobbyist Programmer Join Date: Dec 2007 Location: England Posts: 169 Rep Power: 1	Re: Java Error Messages instead of using all if statements you use elseif? and then leave your else statement at the end. Chris __________________ Who said i couldn't program `sarcasm = raw_input('Type in a sarcastic remark: ') print sarcasm`

May 2nd, 2008, 8:39 AM	#7
kewlgeye Programmer Join Date: Jan 2008 Posts: 53 Rep Power: 1	Re: Java Error Messages I figured it out. I needed to use the NumberFormatException and delete the extends section and also parse within the try statement to have something to try with. Here is what I did. (Toggle Plain Text) try { resulta = Integer.parseInt(resultATF.getText()); resultb = Integer.parseInt(resultBTF.getText()); resultc = Integer.parseInt(resultCTF.getText()); if (resulta > 5){ resulta = resulta - 5; outputATF.setText("You are overstaffed by " + resulta); } else if (resulta < 5){ resulta = 5 - resulta; outputATF.setText("You are understaffed by " + resulta); } else if (resulta == 5){ outputATF.setText("Your staffing is sufficient"); } if (resultb > 8){ resultb = resultb - 8; outputBTF.setText("You are overstaffed by " + resultb); } else if (resultb < 8){ resultb = 8 - resultb; outputBTF.setText("You are understaffed by " + resultb); } else if (resultb == 8){ outputBTF.setText("Your staffing is sufficient"); } if (resultc > 10){ resultc = resultc - 10; outputCTF.setText("You are overstaffed by " + resultc); } else if (resultc < 10){ resultc = 10 - resultc; outputCTF.setText("You are understaffed by " + resultc); } else if (resultc == 10){ outputCTF.setText("Your staffing is sufficient"); } else { throw new NumberFormatException(); //calls } } catch (NumberFormatException ev) { JOptionPane.showMessageDialog(null, "" +ev + " You must enter a number", "Invalid Input", JOptionPane.INFORMATION_MESSAGE); } try { resulta = Integer.parseInt(resultATF.getText()); resultb = Integer.parseInt(resultBTF.getText()); resultc = Integer.parseInt(resultCTF.getText()); if (resulta > 5){ resulta = resulta - 5; outputATF.setText("You are overstaffed by " + resulta); } else if (resulta < 5){ resulta = 5 - resulta; outputATF.setText("You are understaffed by " + resulta); } else if (resulta == 5){ outputATF.setText("Your staffing is sufficient"); } if (resultb > 8){ resultb = resultb - 8; outputBTF.setText("You are overstaffed by " + resultb); } else if (resultb < 8){ resultb = 8 - resultb; outputBTF.setText("You are understaffed by " + resultb); } else if (resultb == 8){ outputBTF.setText("Your staffing is sufficient"); } if (resultc > 10){ resultc = resultc - 10; outputCTF.setText("You are overstaffed by " + resultc); } else if (resultc < 10){ resultc = 10 - resultc; outputCTF.setText("You are understaffed by " + resultc); } else if (resultc == 10){ outputCTF.setText("Your staffing is sufficient"); } else { throw new NumberFormatException(); //calls } } catch (NumberFormatException ev) { JOptionPane.showMessageDialog(null, "" +ev + " You must enter a number", "Invalid Input", JOptionPane.INFORMATION_MESSAGE); }

May 2nd, 2008, 1:49 PM	#8
Ezzaral Newbie Join Date: Apr 2008 Posts: 7 Rep Power: 0	Re: Java Error Messages Your try-catch on NumberFormatException really only needs to be around this portion (Toggle Plain Text) resulta = Integer.parseInt(resultATF.getText()); resultb = Integer.parseInt(resultBTF.getText()); resultc = Integer.parseInt(resultCTF.getText()); resulta = Integer.parseInt(resultATF.getText()); resultb = Integer.parseInt(resultBTF.getText()); resultc = Integer.parseInt(resultCTF.getText()); because that is where the string values are converted to ints. The rest of the code merely operates on those int values and really has no bearing on NumberFormatException. It certainly doesn't need to throw one explicitly.

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Java Error Messages