Issue with repainting second frame

[Jim Pfitz]

All;

I'm looking for a little help. I have a project (mortgage calculator) that was assigned to me. I have everything functional execpt for graph portion.
the graph is the second frame. i've tried a bunch of ways but i can't get the repaint statment to work. right now it opens a new frame instead of refreshing the frame. a little guidence would be appreciated.

attached is the file.

the main 2 areas are line 428-500 this is the second frame. and line 399 which calls the second frame.

thanks in advance.
Jim

see below code

 



import java.text.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionListener;
import javax.swing.plaf.basic.BasicArrowButton;
import java.io.*;
import java.util.Scanner;
import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Rectangle;
 import java.awt.geom.Line2D;
 import javax.swing.JComponent;
/**
 *
 *
 *Date:11/25/09
 * Write the program in Java (with a graphical user interface) and have
 it calculate and display the mortgage payment amount from user input of
 the amount of the mortgage and the user's selection from a menu of
 available mortgage loans:

- 7 years at 5.35%
- 15 years at 5.5%
- 30 years at 5.75%

Use an array for the mortgage data for the different loans. Display the
mortgage payment amount followed by the loan balance and interest paid for
each payment over the term of the loan. Allow the user to loop back and
enter a new amount and make a new selection or quit. Please insert comments
in the program to document the program.


*/
public class mortCalc extends JFrame implements ActionListener
{

        MGraph test2;
        MonthlyGraph upGraph;
        IntegerTextField mortAmount;
        IntegerTextField mortTerm;
        IntegerTextField mortInterest;
        JTextField payment;
        JRadioButton RB7;
        JRadioButton RB15;
        JRadioButton RB30;
        JRadioButton RBCust;
        JButton back;
        BasicArrowButton fwd;
        JTextArea textArea;
        JButton bReset;
        JButton bCalc;
        JButton bClose;
        double term, result, amount, interest;
        int  iWait,n,v;
        int month = 1;
        int i=1;
        double rates[] = {7, 5.35, 15, 5.5, 30, 5.75};

       int[]  monthArray= new int[500];
       double[]  amountArray= new double[500];
       double[]  montIntArray= new double[500];
        double[] YrlyPrincipal = new double[12];
        double[] YrlyInterest = new double[12];
        double monthInt, monthPrincipal;
        String x;
        boolean TorF = false;
        boolean bTF = false;
        final int ROWS = 60;
        final int COLUMNS = 120;
        DecimalFormat formatMonies = new DecimalFormat("$###,###.00"); // apply currency format

 public static void main(String[] args)throws FileNotFoundException
 {
        new mortCalc();

    }



             mortCalc()throws FileNotFoundException
        {
                 // wk5 read in variables frome rates.txt in current directory

                /* FileReader reader = new FileReader("c:/rates.txt");
                                Scanner in = new Scanner(reader);
                             double  rateIn[]={0,0,0};
                                int t = 0;
                                while (in.hasNextLine())
                                {
                                String line = in.nextLine();
                                rateIn[t] = Double.valueOf((String)(line)).doubleValue();

                                t++;
                                }
                            rates[1] = rateIn[0];
                            rates[3] = rateIn[1];
                            rates[5] = rateIn[2];
                           /* System.out.println("r1"+(rates[1]));
                            System.out.println("r2"+(rates[3]));
                            System.out.println("r3"+(rates[5]));
                             */


            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            setTitle ("Mortgage calculator ");


            //mortgage rates and length buttons
            Box termBox = Box.createVerticalBox();
            termBox.add(new JLabel("Select a standard rate or choose custom"));
            ButtonGroup radioGroup = new ButtonGroup(); // Create button group
            radioGroup.add(RB7 = new JRadioButton("7 years at 5.35%"));// Add to group
            RB7.addActionListener(this);// create listener
            RB7.setActionCommand("RB7");// set action label
            termBox.add(RB7); // Add to Box
            radioGroup.add(RB15 = new JRadioButton("15 years at 5.5%"));
            RB15.addActionListener(this);
            RB15.setActionCommand("RB15");
            termBox.add(RB15);
            radioGroup.add(RB30 = new JRadioButton("30 years at 5.75%"));
            RB30.addActionListener(this);
            RB30.setActionCommand("RB30");
            termBox.add(RB30);

           radioGroup.add(RBCust = new JRadioButton("Custom"));
            RBCust.addActionListener(this);
            RBCust.setActionCommand("RBCust");
            termBox.add(RBCust);


           //mortgage label
            Box inputLabelBox = Box.createVerticalBox();
            inputLabelBox.add(new JLabel("Mortage Amount:   $"));
            inputLabelBox.add(Box.createVerticalStrut(10));
            inputLabelBox.add(new JLabel("Mortage term:"));
            inputLabelBox.add(Box.createVerticalStrut(10));
            inputLabelBox.add(new JLabel("Anual Interest Rate:"));
            inputLabelBox.add(Box.createVerticalStrut(10));
            inputLabelBox.add(new JLabel("Montly Payment:"));


            //mortgage input fields' box
            Box inputBox = Box.createVerticalBox();
            mortAmount = new IntegerTextField();
            inputBox.add(mortAmount);
             mortTerm = new IntegerTextField();
            mortTerm.setEditable(TorF);
           inputBox.add(mortTerm);
            mortInterest = new IntegerTextField();
            mortInterest.setEditable(TorF);
            inputBox.add(mortInterest);
            payment = new JTextField();
            payment.setEditable(TorF);
           inputBox.add(payment);

            //mortgage input end box
            Box inputEndBox = Box.createVerticalBox();
           inputEndBox.add(new JLabel(""));
            inputEndBox.add(new JLabel("Years"));
            inputEndBox.add(Box.createVerticalStrut(10));
            inputEndBox.add(new JLabel("% per year"));


            //previous and next button box
            Box controlBox = Box.createHorizontalBox();
            BasicArrowButton back = new BasicArrowButton(BasicArrowButton.WEST);
            back.addActionListener(this);
            back.setActionCommand ("bbutton");
            controlBox.add(back);
            controlBox.add(Box.createRigidArea(new Dimension(25, 25)));
            controlBox.add(controlBox.createGlue());
            controlBox.add(Box.createHorizontalStrut(400));
            controlBox.add(controlBox.createGlue());
            BasicArrowButton fwd = new BasicArrowButton(BasicArrowButton.EAST);
            fwd.addActionListener(this);
            fwd.setActionCommand ("fbutton");
            controlBox.add(fwd);




            // mortgage input container box
            Box mortInfoBox = Box.createHorizontalBox();
            mortInfoBox.add(inputLabelBox);
            mortInfoBox.add(inputBox);
            mortInfoBox.add(inputEndBox);

            // text area labels
            Box TextLabelBox = Box.createHorizontalBox();
            TextLabelBox.add(TextLabelBox.createGlue());
            TextLabelBox.add(new JLabel("Month"));
            TextLabelBox.add(Box.createHorizontalStrut(60));
            TextLabelBox.add(new JLabel("Principal"));
            TextLabelBox.add(Box.createHorizontalStrut(30));
            TextLabelBox.add(new JLabel("Interest"));
            TextLabelBox.add(Box.createHorizontalStrut(50));
            TextLabelBox.add(new JLabel("Payment"));
            TextLabelBox.add(Box.createHorizontalStrut(220));


            //textfield for monthly statment.
            Box inputContentBox = Box.createVerticalBox();
            inputContentBox.add(Box.createVerticalStrut(50));
            inputContentBox.add(mortInfoBox);
            textArea = new JTextArea(ROWS, COLUMNS);
            inputContentBox.add(Box.createVerticalStrut(50));
            inputContentBox.add(TextLabelBox);
            inputContentBox.add(textArea);
            inputContentBox.add(controlBox);
            inputContentBox.add(Box.createVerticalStrut(50));

            //buttons
            Box buttonBox = Box.createHorizontalBox();
            JButton bReset = new JButton("Reset form");
            bReset.addActionListener(this);
            bReset.setActionCommand ("bReset");
            buttonBox.add(bReset);
            JButton bCalc = new JButton("Calculate");
            bCalc.addActionListener(this);
            bCalc.setActionCommand ("bCalc");
            buttonBox.add(bCalc);
            JButton bClose = new JButton("Close");
            bClose.addActionListener(this);
            bClose.setActionCommand ("bClose");
            buttonBox.add(bClose);

            // add all boxes to layout and show pane
            Container content = getContentPane(); // Get content pane
            content.setLayout(new BorderLayout()); // Set border layout manager
            content.add(termBox, BorderLayout.NORTH);
            content.add(inputContentBox, BorderLayout.CENTER);
            content.add(buttonBox, BorderLayout.SOUTH);

            setSize (500, 630);
            show();



        }


      public void actionPerformed(ActionEvent e)
      {
          String Action;
      Action = e.getActionCommand ();

      if (Action.equals("bReset"))
           {
            mortAmount.setText("");
            mortTerm.setText("");
            mortInterest.setText("");
            payment.setText("");
            textArea.setText("");
            resetCalc();

           }
      else if (Action.equals("bClose"))
          {
            System.exit(0);
          }
      else if (Action.equals("bCalc"))
          {
          textArea.setText("");
          resetCalc();
            mortCalc();
          }
      else if (Action.equals("RBCust"))
          {
          TorF = true;// enable custom fields
          custCalc (TorF);
          textArea.setText("");
          month = 1;
          }
      else if (Action.equals("bbutton"))
          {
                  if (i>13)
                  {
                      textArea.setText("");
                      i = (i-24);
                       prntScrn();
                  }
          }
      else if (Action.equals("fbutton"))
          {

                if (i<term)
                      {
              textArea.setText("");
                prntScrn();
                }
          }
      else if (Action.equals("RB7"))
          {
          TorF = false;// disable custom fields
          custCalc (TorF);
          textArea.setText("");
          month = 1;
          mortTerm.setText(Double.toString(rates[0]));
          mortInterest.setText(Double.toString(rates[1]));
          }
      else if (Action.equals("RB15"))
          {
          TorF = false;// disable custom fields
          custCalc (TorF);
          textArea.setText("");
          month = 1;
          mortTerm.setText(Double.toString(rates[2]));
          mortInterest.setText(Double.toString(rates[3]));
          }
      else if (Action.equals("RB30"))
          {
          TorF = false;// disable custom fields
          custCalc (TorF);
         textArea.setText("");
         month = 1;
         mortTerm.setText(Double.toString(rates[4]));
         mortInterest.setText(Double.toString(rates[5]));
          }
    }
      void custCalc (boolean q)
      {
            q = TorF;

            mortTerm.setEditable(q);
            mortInterest.setEditable(q);
      }
     void resetCalc()
     {
        int[]  monthArray= null;
       double[]  amountArray=  null;
       double[]  montIntArray=  null;
       i=1;
       month=1;

     }

void mortCalc()
{
    // getting user input
    String t = mortTerm.getText();
    String a = mortAmount.getText();
    String i = mortInterest.getText();



//convert user input to numbers
term= (Double.parseDouble(t)*12);// convert years to months
interest = ((Double.parseDouble(i)/100)/12);//convert yearly intrest to monthly interest

amount = Double.parseDouble(a);
// calculate monthly payment for mortgage
result = amount*(interest*Math.pow((1 + interest), (term)))/(Math.pow((1 + interest), (term))-1);
//convert calculation to sring and write

x=formatMonies.format(result);// format result
payment.setText(x);
amortization();
prntScrn();


}
void amortization()
{

    int u=0;

    while  (u < term){ // output monthly report loop

 monthInt = amount * interest;
 monthPrincipal = result - monthInt;
 amount = amount - monthPrincipal;
 monthArray[month]=month;
 amountArray[month]=amount;
 montIntArray[month]=monthInt;
u=u+1;
month = month+1;

}

}
void prntScrn()
{
    while  (i < term){
        iWait = 0;
        n=0;
    while (iWait < 12){
    textArea.append(""+monthArray[i]+"\t" +formatMonies.format(amountArray[i])+"\t"+formatMonies.format(montIntArray[i])+"\t"+x+"\n");
    iWait = iWait +1;
    i=i+1;


    }
        test2 = new MGraph();//newWindow();
    //paintAll(Graphics g);
    //upGraph = new MonthlyGraph();
   // upGraph.repaint();
    break;
     }
}
// SNIPPET PROVIDED BY:http://www.devx.com/tips/Tip/14311
public class IntegerTextField extends JTextField {



    final static String badchars
       = "`~!@#$%^&*()_+-=\\|\"':;?/><, ";

        @Override
    public void processKeyEvent(KeyEvent ev) {

        char c = ev.getKeyChar();

        if((Character.isLetter(c) && !ev.isAltDown())
           || badchars.indexOf(c) > -1) {
            ev.consume();
            return;
        }
               else super.processKeyEvent(ev);

    }
}

public class MGraph
{


    public MGraph() // constructor
	{

JFrame frame = new JFrame();
frame.setSize(600, 600);
frame.setTitle("Monthly Payments Graph");
frame.setLocation (500, 0);
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

MonthlyGraph component = new MonthlyGraph();
 frame.add(component);

 frame.setVisible(true);
 }
}

class MonthlyGraph extends JComponent
 {

    int h, x, l1, l2;
    double n, p;


    public void paintComponent(Graphics g)
         {

      // Recover Graphics2D
         Graphics2D g2 = (Graphics2D) g;

            //draw Y axis
            Line2D.Double YAX = new Line2D.Double(40, 40, 40, 440);
            g2.draw (YAX);

            //draw X axis
            Line2D.Double XAX = new Line2D.Double(40, 440, 400, 440);
            g2.draw (XAX);

                            Rectangle box = new Rectangle(29, 40, 30,  1);
                              g2.setColor(Color.RED);
                              g2.fill(box);
                            Rectangle box2 = new Rectangle(29, 40, 30,  1);
                                g2.setColor(Color.BLUE);
                                g2.fill(box2);


            h=1;
            v=i;
           while (h<13)
            {
                System.out.println("int i is:"+(montIntArray[v]));
                int w=(int)(((montIntArray[v])/result)*100);

                //System.out.println("int i is:"+w);
                l1=(w*4);
                //System.out.println("int l1 is:"+l1);

               x=(l1+40);
               l2=(400-l1);

              box.translate(34, 0);
              box.setSize(30, l1);
              g2.setColor(Color.RED);
               g2.fill(box);
               box2.translate(34, l1);
               box2.setSize(30, l2);
               g2.setColor(Color.BLUE);
               g2.fill(box2);
               box2.translate(0, -l1);
               box2.setSize(30, 0);
               g2.fill(box2);

               h=h+1;
               if (l1>0)
               {
               v=v+1;
               }
               else if (l1<=0)
               {

               }
        }

         }


           }
}