My code compiles and runs but the GUI will not display. I have tinkered with it but cannot get it to come up. Someone said I may be miscalling my GUI in this code, help?
Thank you. - import javax.swing.*;
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import java.awt.event.*;
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public class Application_MainRunInv extends JFrame {
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private JTextArea txt;
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private Inventory inv;
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private int currentDisplay = 0;
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public Application_MainRunInv() {
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super("Pencil Warehouse");
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Prompts program to quit when closed
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}
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public void init() {
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//Creates 3 Pencil Types
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Brand p1 = new Brand(120, "Charcoal Pencil", 41, 1.97, "Stanford");
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Brand p2 = new Brand(121, "Colored", 82, 1.49, "Stanford");
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Brand p3 = new Brand(123, "Number2", 53, .97, "Woodward");
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//Creates an inventory for the information
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inv = new Inventory();
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inv.add(p1);
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inv.add(p2);
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inv.add(p3);
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inv.sort();
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//Outputs the above information
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for (int i = 0; i < inv.size(); i++) {
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System.out.println("Pencil Number: " + inv.get(i).getPencilNumber());
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System.out.println("Pencil Name: " + inv.get(i).getPencilName());
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System.out.println("Pencil Stock: " + inv.get(i).getPencilStock());
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System.out.println("Pencil Cost: $" + String.format("%.2f",inv.get(i).getPencilCost()));
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System.out.println("Total Inventory Value: $" + String.format("%.2f",inv.get(i).TotalValue()));
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System.out.println("Restocking-Fee: $" + String.format("%.2f",inv.get(i).RestockingFee()));
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}
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System.out.println("Total Inventory Value: $" + String.format("%.2f",inv.TotalValue()));
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//Sets up the interface prior to button creation
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JPanel panel = new JPanel();
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txt = new JTextArea(15,40);
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txt.setEditable(false);
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panel.add(txt);
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JButton original = new JButton("Original");
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original.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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currentDisplay = 0;
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displayPencil();
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}
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});
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panel.add(original);
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JButton previous = new JButton("Previous");
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previous.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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if (currentDisplay > 0) currentDisplay--;
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else currentDisplay = inv.size()-1;
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displayPencil();
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}
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});
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panel.add(previous);
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JButton next = new JButton("Next");
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next.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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if (currentDisplay < inv.size()-1) currentDisplay++;
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else currentDisplay = 0;
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displayPencil();
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}
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});
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panel.add(next);
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JButton end = new JButton("End");
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end.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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currentDisplay = inv.size()-1;
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displayPencil();
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}
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});
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panel.add(end);
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panel.add(new Graphic());
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getContentPane().add(panel);
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displayPencil();
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}
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public void displayPencil() {
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txt.setText("Pencil Information:\n");
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txt.append("Pencil Number: " + inv.get(currentDisplay).getPencilNumber() + "\n");
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txt.append("Pencil Name: " + inv.get(currentDisplay).getPencilName() + "\n");
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txt.append("Pencil Stock: " + inv.get(currentDisplay).getPencilStock() + "\n");
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txt.append("Pencil Cost: $" + String.format("%.2f",inv.get(currentDisplay).getPencilCost()) + "\n");
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txt.append("Total Inventory Value: $" + String.format("%.2f",inv.get(currentDisplay).TotalValue()) + "\n");
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txt.append("Restocking-Fee: $" + String.format("%.2f",inv.get(currentDisplay).RestockingFee()) + "\n\n");
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txt.append("Total Inventory Value: $" + String.format("%.2f",inv.TotalValue()));
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}
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public static void main(String args[]) {
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Application_MainRunInv gui = new Application_MainRunInv();
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gui.pack();
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gui.setVisible(true);
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}
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//
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}
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