Yes this is homework, having cleared that up what I want to do is compile,
and run these 2 programs simultaneously. Any help would be appreciated.

*/
import java.awt.*;  /* Import statements */
import javax.swing.*;
import java.awt.event.*;
class Assignmentweek2

   {
       public static void main(String args[])

           {
               Interest i=new Interest();
               i.init();
               i.setVisible(true);
           }
   }
   class Interest extends JFrame implements ActionListener

       {
           JPanel a,i,y,r,b,all;  /*GUI */
           JLabel am,it,yr,rt;
           JTextField amt,itr,yrs,rate;
           JButton cal,clr;
           float amount,years,rate_in,interest;
           public Interest()

               {
                   setTitle("Find Payment");      /*GUI specs */
                   setSize(500,400);
                   setLocation(200,200);
                   setDefaultCloseOperation(EXIT_ON_CLOSE);
                   a=new JPanel();
                   i=new JPanel();
                   y=new JPanel();
                   r=new JPanel();
                   b=new JPanel();
                   all=new JPanel(new FlowLayout(FlowLayout.CENTER,1000,20));
                   am=new JLabel("Enter Amount");
                   it=new JLabel("Total Monthly Payment is");
                   yr=new JLabel("Enter Years");
                   rt=new JLabel("Enter Interest rate");
                   amt=new JTextField(10);
                   itr=new JTextField(10);
                   itr.setEditable(false);
                   yrs=new JTextField(10);
                   rate=new JTextField(10);
                   cal=new JButton("Calculate");
                   clr=new JButton("New Amount");
               }
               public void init()

                   {
                       setLayout(new BorderLayout());
                       a.add(am);
                       a.add(amt);
                       y.add(yr);
                       y.add(yrs);
                       r.add(rt);
                       r.add(rate);
                       i.add(it);
                       i.add(itr);
                       b.add(cal);
                       b.add(clr);
                       all.add(a);
                       all.add(y);
                       all.add(r);
                       all.add(i);
                       add(b,BorderLayout.SOUTH);
                       add(all,BorderLayout.CENTER);
                       cal.addActionListener(this);
                       clr.addActionListener(this);
                   }
                   public void actionPerformed(ActionEvent e)

                       {
                           try

                               {
                                   if(cal==e.getSource())

                                       {
                                           amount=Float.parseFloat(amt.getText());
/*Program computations */
                                           years=Float.parseFloat(yrs.getText());
                                           rate_in=Float.parseFloat(rate.getText());

interest=amount/years*rate_in/100+amount/years/12;
                                           itr.setText(Float.toString(interest));
                                       }
                                       else if(clr==e.getSource())

                                           {
                                               amt.setText("");
                                               yrs.setText("");
                                               rate.setText("");
                                               itr.setText("");
                                           }
                                       }
                                       catch(NumberFormatException n) /*Resets GUI
to 0's if wrong # format entry is attempted */

                                           {
                                               amt.setText("0");
                                               yrs.setText("0");
                                               rate.setText("0");
                                               itr.setText("0");
                                           }
                                       }
                               }/* END*/

-------------------------------------Along with this program------------------
----------------------------------------------------------

*/
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import javax.swing.*;
import javax.swing.table.*;
import java.io.*;

public class Week3 extends JFrame implements ActionListener
{
//Components
JPanel lpanel = new JPanel();
JPanel tpanel = new JPanel();
JPanel p1 = new JPanel();
JPanel pAmount = new JPanel();
JPanel pInterest = new JPanel();
JPanel pTermlngth = new JPanel();
JPanel pPymtresult = new JPanel();
JPanel pButton = new JPanel();

JLabel lAmount = new JLabel();
JLabel lTermlngth = new JLabel();
JLabel lRate = new JLabel();
JLabel lTitle = new JLabel();
JLabel lCombo = new JLabel();
JLabel lPymtresult = new JLabel();
JLabel lMain = new JLabel();
JLabel lMonthlypymt = new JLabel();
JLabel lBalance = new JLabel();
JLabel lInterest = new JLabel();

JButton bCalc = new JButton();
JButton bMonthlypymt = new JButton();
JButton bQuit = new JButton();

JTextField tAmount = new JTextField(8);
JTextField tTermlngth = new JTextField();
JTextField tRate = new JTextField();
JTextField tMonthlypymt = new JTextField(8);
JTextField tPymtresult = new JTextField(8);
JTextField tCombo = new JTextField();
JTextField tBalance = new JTextField();
JTextField tInterest = new JTextField();

String sErrorMessage = "";
boolean bError = false;
String sPymtnumber = "######";
String sPercent = "###.###%";
String sAreaheader = " Payment\tPrinciple\tInterest\tBalance\n";

NumberFormat nfCurrency = NumberFormat.getCurrencyInstance();
NumberFormat nfDecimals = new DecimalFormat(sPymtnumber);
NumberFormat nfPercent = new DecimalFormat(sPercent);
DecimalFormat decimalPlaces=new DecimalFormat("0.00");

JComboBox cbSetup = new JComboBox();
JTextArea taArea = new JTextArea(20,40);
JScrollPane spScrollpanel = new JScrollPane(taArea);
FlowLayout lFlow = new FlowLayout(FlowLayout.LEFT,5,5);

//Variables

double dIntpaid = 0;
double dAmountpaid = 0;
double dTotaldue = 0;
double dMonthlyapr = 0;
double dAmount = 0;
double dApr = 0;
double dAprconv = 0;
double dPymt = 0;
double dTotinterest = 0;
double dTotbalance = 0;
double dMonthlypymt = 0;
double dYearlyrate = 0;
double dTermlngthconv = 0;
double dTermlngth = 0;

int iCounter = 0;
int iTermlngth = 0;
int iTotmonths = 0;

//Initialize array
double[] xRate = {.0535,.0550,.0575};
int[] xTerm = {7,15,30};

public static void main(String[] args)
{
new Week3();
}

public Week3()
{

Container main = getContentPane();

for(iCounter = 0; iCounter <= 2; iCounter++)
{
cbSetup.addItem(xTerm[iCounter] + " years - " + nfPercent.format(xRate
[iCounter]));
}

//Set editables
tMonthlypymt.setEditable(false);
tMonthlypymt.setBackground(Color.white);
tBalance.setEditable(false);
tBalance.setBackground(Color.white);
tInterest.setEditable(false);
tInterest.setBackground(Color.white);
tRate.setEditable(false);
tRate.setBackground(Color.white);
tTermlngth.setEditable(false);
tTermlngth.setBackground(Color.white);
taArea.setEditable(false);
taArea.setBackground(Color.white);
tAmount.setEditable(true);
tAmount.setBackground(Color.white);

//Read text panel
lpanel.setLayout(new GridLayout(8,1));
lpanel.setMinimumSize(new java.awt.Dimension(130,150));
lpanel.setPreferredSize(new java.awt.Dimension(130,150));
lpanel.setMaximumSize(new java.awt.Dimension(Short.MAX_VALUE,Short.MAX_VALUE))
;
lpanel.add(lCombo);
lpanel.add(lAmount);
lpanel.add(lRate);
lpanel.add(lTermlngth);
lpanel.add(lMonthlypymt);
lpanel.add(lBalance);
lpanel.add(lInterest);
lCombo.setText("Payback Option");
lAmount.setText("Amount=150000 etc.");
lRate.setText("APR");
lTermlngth.setText("Length of Loan");
lMonthlypymt.setText("Monthly Payment");
lBalance.setText("Existing Balance");
lInterest.setText("Existing Interest");

//Write text panel
tpanel.setLayout(new GridLayout(8,1));
tpanel.setMinimumSize(new java.awt.Dimension(100, 150));
tpanel.setPreferredSize(new java.awt.Dimension(100, 150));
tpanel.setMaximumSize(new java.awt.Dimension(Short.MAX_VALUE,Short.MAX_VALUE))
;
tpanel.add(cbSetup);
tpanel.add(tAmount);
tpanel.add(tRate);
tpanel.add(tInterest);
tpanel.add(tTermlngth);
cbSetup.addActionListener(this);
tpanel.add(tMonthlypymt);
tpanel.add(tBalance);
tpanel.add(tInterest);

//Create border layout
p1.setBorder(BorderFactory.createEmptyBorder(10, 10, 2, 10));
p1.setLayout(new BorderLayout());
p1.add(lpanel, "West");
p1.add(tpanel, "East");
main.add(p1, "West");

//Buttons
pButton.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
pButton.setLayout(new BorderLayout());
bCalc.setText("Calculate Mortgage");
main.add(bCalc);
bMonthlypymt.setText("See all Payments");
main.add(bMonthlypymt);
bQuit.setText("Quit");
main.add(bQuit);
main.add(pButton);

//Scrollable
spScrollpanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
main.add(spScrollpanel);
main.setLayout(lFlow);

//Listeners
bCalc.addActionListener(this);
bMonthlypymt.addActionListener(this);
bQuit.addActionListener(this);

//Main title
this.setSize(650,550);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setTitle("Mortgage Week 3!");
this.setVisible(true);

}

public void actionPerformed(ActionEvent thisEvent)

{

Object source = thisEvent.getSource();

//Declare exceptions

if(source == bCalc)
{
try
{

iTermlngth = Integer.parseInt(tTermlngth.getText());
dAmount = Double.parseDouble(tAmount.getText());
dApr = Double.parseDouble(tRate.getText());
}

catch(NumberFormatException e)
{

sErrorMessage = sErrorMessage + "Invalid";
bError = true;
}

if (iTermlngth <= 0 || dAmount <= 0 || dApr <= 0)
{

sErrorMessage = sErrorMessage + "Invalid";
bError = true;
}

if(bError == true)
{

JOptionPane.showMessageDialog(this, sErrorMessage, "Invalid", JOptionPane.
ERROR_MESSAGE);
tMonthlypymt.setText("");
}

//Mortgage math
else
{

dTermlngthconv = iTermlngth / 12;
dAprconv = dApr / 100;
dMonthlypymt = (((dAmount * dAprconv) * dTermlngthconv) + dAmount) /
iTermlngth;
dTotbalance = dMonthlypymt * iTermlngth;
dTotinterest = dTotbalance - dAmount;
tMonthlypymt.setText(nfCurrency.format(dMonthlypymt));
tBalance.setText(nfCurrency.format(dTotbalance));
tInterest.setText(nfCurrency.format(dTotinterest));
bMonthlypymt.setEnabled(true);
}

}

if(source == bMonthlypymt)
{

dMonthlyapr = (dApr / 100) / 12;
dTotaldue = dAmount;
taArea.setText(sAreaheader);

for(int iCounter = 0; iCounter <= iTermlngth - 1; iCounter++)

{

dIntpaid = dTotaldue * dMonthlyapr;

if(dIntpaid <= 0)
dIntpaid = 0;
dAmountpaid = dMonthlypymt - dIntpaid;
dTotaldue = dTotaldue - dAmountpaid;

taArea.append(" "
+nfDecimals.format(iCounter + 1) + "\t"
+nfCurrency.format(dAmountpaid) + "\t"
+nfCurrency.format(dIntpaid) + "\t"
+nfCurrency.format(dTotaldue) + "\n");
taArea.setCaretPosition(0);
}
}

//Display all payments

if(source == cbSetup)

{

int cbStart = cbSetup.getSelectedIndex();
iTotmonths = xTerm[cbStart]* 12;
dYearlyrate = xRate[cbStart]* 100;
tTermlngth.setText(Integer.toString(iTotmonths));
tRate.setText(Double.toString(dYearlyrate));
tAmount.requestFocus();
}

//exit program

if(source == bQuit)

{

System.exit(0);

}

}

}  /*END*/

-----------------------------------------------------any help would be
appriciated---------------------------------------------------