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I am in a little bit of a predicament. I have a problem sending values that have been retrieved from an JSpinner to an array!
I have tried using a for loop to assign each value to an array element but i receive this error message!
"java.lang.NullPointerException
at GUI_PHASE3_1.<init>(GUI_PHASE3_1.java:71)
at GUI_PHASE3_1.main(GUI_PHASE3_1.java:248)"
Here is my completed code:
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
public class GUI_PHASE3_1 extends JFrame
{
String[] name;
int[] price;
String[] value = new String [13];
JSpinner quantity;
JTextField text1 = new JTextField (20);
JTextField text3 = new JTextField (20);
JTextField text4 = new JTextField (20);
JTextField text5 = new JTextField (20);
JTextField text7 = new JTextField (20);
JTextField text8 = new JTextField ("Optional", 20);
JTextField text9 = new JTextField ("Optional", 20);
JTextArea text10 = new JTextArea ("Optional", 2, 20);
JLabel nameL = new JLabel ();
JLabel address1 = new JLabel ();
JLabel address2 = new JLabel ();
JLabel address3 = new JLabel ();
JLabel contact = new JLabel ();
JLabel contact2 = new JLabel ();
JLabel contact3 = new JLabel ();
JLabel comments = new JLabel ();
public GUI_PHASE3_1 ()
{
JPanel jp1 = new JPanel (); //This will create the first tab
JPanel jp2 = new JPanel (); //This will create the second tab
JPanel jp3 = new JPanel ();
JPanel jp4 = new JPanel ();
try
{
name = new String [13];
price = new int [13];
int size = 0;
BufferedReader infil = new BufferedReader (new FileReader ("KFCMenu.txt"));
String line = infil.readLine ();
while (line != null)
{
String field[] = line.split ("#");
name [size] = field [0];
price [size] = Integer.parseInt (field [1]);
size++;
line = infil.readLine ();
JLabel o1 = new JLabel (field [0]);
JLabel o2 = new JLabel (field [1]);
JLabel randC = new JLabel ("~R");
JLabel ospace = new JLabel ("______________________________");
SpinnerModel sm = new SpinnerNumberModel (0, 0, 10, 1);
JSpinner quantity1 = new JSpinner (sm);
jp2.add (o1);
jp2.add (randC);
jp2.add (o2);
jp2.add (quantity1);
jp2.add (ospace);
for (int x = 0; x < 13; x++)
{
value[x] = quantity.getValue ().toString ();
if (Integer.parseInt (value[x]) > 0)
{
System.out.println (value[x]);
}
}
}
infil.close ();
}
catch (IOException ioe)
{
}
//This will create the title you see in the upper left of the window
setTitle ("Courier-IT Like a Boss");
setSize (300, 575); //set size so the user can "see" it
setResizable (false);
setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
//Here we are creating the object
JTabbedPane jtp = new JTabbedPane ();
//This creates the template on the windowed application that we will be using
getContentPane ().add (jtp);
//This creates a non-editable label, sets what the label will read
//and adds the label to the first tab
JLabel label1 = new JLabel ("Name of Client:");
JLabel label2 = new JLabel ("Delivery Address Details");
JLabel label3 = new JLabel ("Street Address:");
JLabel label4 = new JLabel ("Town/Suburb:");
JLabel label5 = new JLabel ("Date of Delivery:");
JLabel space1 = new JLabel ("______________________________");
JLabel label6 = new JLabel ("Contact Details of Client");
JLabel label7 = new JLabel ("Contact Number 1:");
JLabel label8 = new JLabel ("Contact Number 2:");
JLabel label9 = new JLabel ("Additional Number:");
JLabel label10 = new JLabel ("Comments:");
JLabel space2 = new JLabel ("______________________________");
jp1.add (label1);
jp1.add (text1);
jp1.add (label2);
jp1.add (space1);
jp1.add (label3);
jp1.add (text3);
jp1.add (label4);
jp1.add (text4);
jp1.add (label5);
jp1.add (text5);
jp1.add (label6);
jp1.add (space2);
jp1.add (label7);
jp1.add (text7);
jp1.add (label8);
jp1.add (text8);
jp1.add (label9);
jp1.add (text9);
jp1.add (label10);
jp1.add (text10);
//This adds the first and second tab to our tabbed pane object and names it
jtp.addTab ("KFC", jp1);
jtp.addTab ("Menu", jp2);
jtp.addTab ("Order Details", jp3);
jtp.addTab ("Confirm", jp4);
JLabel od = new JLabel ("Order Details:");
JLabel space4 = new JLabel ("______________________________");
JLabel spaceNew = new JLabel ("______________________________");
GridBagLayout gb = (new GridBagLayout ());
GridBagConstraints c = new GridBagConstraints ();
GridBagConstraints c2 = new GridBagConstraints ();
GridBagConstraints c3 = new GridBagConstraints ();
GridBagConstraints c4 = new GridBagConstraints ();
GridBagConstraints c5 = new GridBagConstraints ();
GridBagConstraints c6 = new GridBagConstraints ();
GridBagConstraints c7 = new GridBagConstraints ();
GridBagConstraints c8 = new GridBagConstraints ();
GridBagConstraints c9 = new GridBagConstraints ();
GridBagConstraints divider = new GridBagConstraints ();
GridBagConstraints spaceNew2 = new GridBagConstraints ();
jp3.setLayout (gb);
c.weightx = 0;
c.weighty = 0;
c.gridx = 0;
c.gridy = 1;
c2.gridy = 3;
c3.gridy = 4;
c4.gridy = 5;
c5.gridy = 6;
c6.gridy = 7;
c7.gridy = 8;
c8.gridy = 9;
c9.gridy = 10;
divider.gridy = 2;
spaceNew2.gridy = 12;
JButton refresh = new JButton ("Refresh");
gb.setConstraints (refresh, c);
gb.setConstraints (nameL, c2);
gb.setConstraints (address1, c3);
gb.setConstraints (address2, c4);
gb.setConstraints (address3, c5);
gb.setConstraints (contact, c6);
gb.setConstraints (contact2, c7);
gb.setConstraints (contact3, c8);
gb.setConstraints (comments, c9);
gb.setConstraints (space4, divider);
gb.setConstraints (spaceNew, spaceNew2);
jp3.add (od);
jp3.add (refresh);
jp3.add (space4);
jp3.add (nameL);
jp3.add (address1);
jp3.add (address2);
jp3.add (address3);
jp3.add (contact);
jp3.add (contact2);
jp3.add (contact3);
jp3.add (comments);
jp3.add (spaceNew);
//This is an Action Listener which reacts to clicking on
//the test button called "Press"
ButtonHandler phandler = new ButtonHandler ();
refresh.addActionListener (phandler);
setVisible (true);
}
public class ButtonHandler implements ActionListener
{
public void actionPerformed (ActionEvent s)
{
nameL.setText (text1.getText ());
address1.setText (text3.getText ());
address2.setText (text4.getText ());
address3.setText (text5.getText ());
contact.setText (text7.getText ());
contact2.setText (text8.getText ());
contact3.setText (text9.getText ());
comments.setText (text10.getText ());
}
}
//This is the internal class that defines what the above Action Listener
//will do when the test button is pressed.
//example usage
public static void main (String[] args)
{
GUI_PHASE3_1 tab = new GUI_PHASE3_1 ();
}
}
My textfile is saved as "KFCMenu.txt":
StreetWise Feast#87
21 Piece Bucket#179
Variety Bucket#129
Variety Bucket w/Chips#149
Variety Feast#99
Family Treat (10 piece)#129
Streetwise Feast#67
Verry Berry Krusher#15
Oreo Krusher#15
Milky Bar Krusher#17
Mango Bliss Krusher#15
I have no idea what type of error this is, nor where to begin fixing it, as when I close the error the program doesn't highlight (as it usually does when an error is encountered) the problem...
Please Assist! Any advice would be much appreciated!
This post has been edited by Gamme40: 18 October 2012 - 09:35 AM
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