Solved

I can compile the code

Posted on 2006-10-26
3
224 Views
Last Modified: 2013-11-23
I can compile the code but it won't run, I think it doesn't know that there is a GUI, What bit of code am I missing, it must be a hair off somewhere please offer some advice to me, Thank you, Charlie


import java.io.*;
import javax.swing.*;
import java.math.*;
import java.applet.*;
import java.awt.*;
 
public class MortgageCalculatorXXX extends JApplet
{
 
//declare and construct variables
      double mortgagePayment;
      double term = 0.0;
      double loanAmount = 0.0;
      double interestRate = 0.0;
 
      String loans[] = {"7 year at 5.35%", "15 year at 5.5%", "30 year at 5.75%"};
 
  public void init()
     {
 
      //Execute a job on the event-dispatching thread:
      //creating this applet's GUI.
      try
      {
      javax.swing.SwingUtilities.invokeAndWait(new Runnable()
          {
      public void run()
              {
      createGUI();
              }
          });
        }
      catch (Exception e)
      {
      System.err.println("createGUI didn't successfully complete");
        }
           }
      private void createGUI()
   {
      JComboBox combo;    // add this line
 
          //Create a panel and add components to it.
          JPanel contentPane = new JPanel(new BorderLayout());
 
          //Make it the content pane.
          contentPane.setOpaque(true);
 
          // Create a combobox
          combo = new JComboBox();
          combo.setBounds( 20, 35, 260, 20 );
          contentPane.add( combo );
 
          JFrame frame;
          JPanel panel;
          JLabel prinLbl, aprLbl, termLbl, pymtLbl;
          JTextField prinTf, aprTf, termTf, pymtTf;
          JButton calcBtn;
 
          contentPane.setLayout(new GridLayout(5,2));
          prinLbl = new JLabel ("loanAmount?");
          aprLbl = new JLabel ("interestRate?");
          termLbl = new JLabel ("term?");
          pymtLbl = new JLabel ("MortgagePayment");
 
          frame = new JFrame("Mortgage Calculator");
          panel = new JPanel();
          JLabel label = new JLabel("You are successfully running a Swing applet!");
          label.setHorizontalAlignment(JLabel.CENTER);
          label.setBorder(BorderFactory.createMatteBorder(1,1,1,1,Color.black));
 
 
           //calculations
           mortgagePayment = (loanAmount)*
           ((interestRate/1200)/(1-Math.pow((1+(interestRate/1200)),-(term))));
       }
    }
0
Comment
Question by:charliebaby
3 Comments
 
LVL 9

Accepted Solution

by:
shinobun earned 250 total points
ID: 17817150
         JPanel contentPane = new JPanel(new BorderLayout());

Should be:

        Container contentPane = getContentPane();
        contentPane.setLayout(new BorderLayout());

Or, do a getContentPane().add(contentPane);

Otherwise, all the stuff you did will just get garbage collected.  :)
0
 
LVL 14

Assisted Solution

by:hoomanv
hoomanv earned 250 total points
ID: 17817833
> Container contentPane = getContentPane();
JPanel contentPane = (JPanel) getContentPane();
0
 

Author Comment

by:charliebaby
ID: 17821853
Thanks to the both of you I realized just now that i cant use an  JApplett method anyway, thanks for the trouble... will split the points.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Whether you've completed a degree in computer sciences or you're a self-taught programmer, writing your first lines of code in the real world is always a challenge. Here are some of the most common pitfalls for new programmers.
Computer science students often experience many of the same frustrations when going through their engineering courses. This article presents seven tips I found useful when completing a bachelors and masters degree in computing which I believe may he…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
The viewer will learn how to synchronize PHP projects with a remote server in NetBeans IDE 8.0 for Windows.

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now