drivenit
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Java help
Hey all
Well I am still having trouble with my application
I have 3 fields that have to put out 6 calculations. the calculations are as fallows are stated here
p,loan amount or principal
n,number of payments = payments per year * number of years
i,interest rate per pay period = APR/payments per year = APR/12
t,interest paid = interest rate per pay period * previous principal balance
r,monthly payment amount = principal * interest per period / (1-(1+(interest per period)/100)^(number of payments-1)^2)
a, principle amount = monthly payment amount – interest paid
b, principle balance = previous balance – principle amount
I can't get it to except the apr because of it wont take a decimal i think this is due to integer value and not sure how get it to output more then one calculation Any help would be much appreciated here is the code..
/* This is an example of a Java Swing Applet
* The first three import statements, java.awt.*,
* java.awt.event.*, and javax.swing.* must be included
* in the creation of any applet. The remaining four
* are used for some of the math, input/output, language
* and utility functions that are used. Not all of them
* are used in this applet,
*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.math.*;
import java.util.*;
import java.io.*;
import java.lang.*;
/* Notice this is
* how the calculation gets started from the button
*/
public class IP5 extends JApplet implements ActionListener
{
// Variables declaration. For this applet, not all
// declared labels and textfields are used
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jpanel3;
private javax.swing.JLabel jLabel2;
private javax.swing.JTextField jTextField1;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField jTextField2;
private javax.swing.JLabel jLabel4;
private javax.swing.JTextField jTextField3;
private javax.swing.JLabel jLabel5;
private javax.swing.JTextField jTextField4;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JTextArea resultArea;
private Container container;
// End of variables declaration
/** Initialization method that will be called after the applet is loaded
* into the browser. Change the setSize(x,y) values to resize the applet
* when using appletviewer
*/
public void init () {
initComponents();
setSize(800, 600);
}
private void initComponents() {
container = getContentPane();
// The .setLayout creates the different layouts available.
// This applet uses BorderLayout()
container.setLayout( new BorderLayout() );
// Creating instances of each item
jPanel2 = new javax.swing.JPanel();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jTextField2 = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
jTextField4 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
resultArea = new javax.swing.JTextArea();
// End Creation
// Set text on labels, preferred size can be optional on labels,
// size should/must be used on text fields.
// Then each individual item is added to a panel.
jLabel2.setText("Loan Amount = ");
// jLabel2.setPreferredSize(n ew java.awt.Dimension(75, 16));
jPanel2.add(jLabel2);
jTextField1.setText("");
jTextField1.setPreferredSi ze(new java.awt.Dimension(65, 20));
jPanel2.add(jTextField1);
jLabel3.setText("APR amount =");
// jLabel3.setPreferredSize(n ew java.awt.Dimension(75, 16));
jPanel2.add(jLabel3);
jTextField2.setText("");
jTextField2.setPreferredSi ze(new java.awt.Dimension(65, 20));
jPanel2.add(jTextField2);
jLabel4.setText("How Many Payments = ");
// jLabel4.setPreferredSize(n ew java.awt.Dimension(95, 16));
jPanel2.add(jLabel4);
jTextField3.setText("");
jTextField3.setPreferredSi ze(new java.awt.Dimension(65, 20));
jPanel2.add(jTextField3);
// now the jPanel2 object is set in the borderlayout NORTH position.
// you must use NORTH, SOUTH, EAST, WEST or CENTER.
// In this case, only NORTH, SOUTH and CENTER are used.
container.add( jPanel2, BorderLayout.NORTH);
jButton1.setText("Click Here To Calculate");
jButton1.addActionListener (this);
container.add(resultArea, BorderLayout.CENTER);
container.add(jButton1, BorderLayout.SOUTH);
}
public void actionPerformed(ActionEven t e)
{
try
{
// The text fields pass strings, so you must create integers out of the field values.
int p=Integer.parseInt(jTextFi eld1.getTe xt()), i=Integer.parseInt(jTextFi eld2.getTe xt()),
n=Integer.parseInt(jTextFi eld3.getTe xt()), temp;
resultArea.setText("");
// This applet should caculate the monthly payment, Interest per pay period, Number of pay periods
// Amortization shcedule .
if (p>i)
temp = ( p*i / (1-(1+(i)/100)^(n-1)^2));
else
temp = ( p*i / (1-(1+(i)/100)^(n-1)^2));
resultArea.setText("" + temp);
}
catch (Exception ex)
{
// this gives an error when an exception accurs
resultArea.setText("Input properly please!");
}
}
}
Here is the HTML to call the applet
<HTML>
<HEAD>
<TITLE>Unit 5 IP Add</TITLE>
</HEAD>
<BODY>
Here is the output of my program:
<APPLET CODE="IP5.class"WIDTH="600 " HEIGHT="200">
</APPLET>
</BODY>
</HTML>
Well I am still having trouble with my application
I have 3 fields that have to put out 6 calculations. the calculations are as fallows are stated here
p,loan amount or principal
n,number of payments = payments per year * number of years
i,interest rate per pay period = APR/payments per year = APR/12
t,interest paid = interest rate per pay period * previous principal balance
r,monthly payment amount = principal * interest per period / (1-(1+(interest per period)/100)^(number of payments-1)^2)
a, principle amount = monthly payment amount – interest paid
b, principle balance = previous balance – principle amount
I can't get it to except the apr because of it wont take a decimal i think this is due to integer value and not sure how get it to output more then one calculation Any help would be much appreciated here is the code..
/* This is an example of a Java Swing Applet
* The first three import statements, java.awt.*,
* java.awt.event.*, and javax.swing.* must be included
* in the creation of any applet. The remaining four
* are used for some of the math, input/output, language
* and utility functions that are used. Not all of them
* are used in this applet,
*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.math.*;
import java.util.*;
import java.io.*;
import java.lang.*;
/* Notice this is
* how the calculation gets started from the button
*/
public class IP5 extends JApplet implements ActionListener
{
// Variables declaration. For this applet, not all
// declared labels and textfields are used
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jpanel3;
private javax.swing.JLabel jLabel2;
private javax.swing.JTextField jTextField1;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField jTextField2;
private javax.swing.JLabel jLabel4;
private javax.swing.JTextField jTextField3;
private javax.swing.JLabel jLabel5;
private javax.swing.JTextField jTextField4;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JTextArea resultArea;
private Container container;
// End of variables declaration
/** Initialization method that will be called after the applet is loaded
* into the browser. Change the setSize(x,y) values to resize the applet
* when using appletviewer
*/
public void init () {
initComponents();
setSize(800, 600);
}
private void initComponents() {
container = getContentPane();
// The .setLayout creates the different layouts available.
// This applet uses BorderLayout()
container.setLayout( new BorderLayout() );
// Creating instances of each item
jPanel2 = new javax.swing.JPanel();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jTextField2 = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
jTextField4 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
resultArea = new javax.swing.JTextArea();
// End Creation
// Set text on labels, preferred size can be optional on labels,
// size should/must be used on text fields.
// Then each individual item is added to a panel.
jLabel2.setText("Loan Amount = ");
// jLabel2.setPreferredSize(n
jPanel2.add(jLabel2);
jTextField1.setText("");
jTextField1.setPreferredSi
jPanel2.add(jTextField1);
jLabel3.setText("APR amount =");
// jLabel3.setPreferredSize(n
jPanel2.add(jLabel3);
jTextField2.setText("");
jTextField2.setPreferredSi
jPanel2.add(jTextField2);
jLabel4.setText("How Many Payments = ");
// jLabel4.setPreferredSize(n
jPanel2.add(jLabel4);
jTextField3.setText("");
jTextField3.setPreferredSi
jPanel2.add(jTextField3);
// now the jPanel2 object is set in the borderlayout NORTH position.
// you must use NORTH, SOUTH, EAST, WEST or CENTER.
// In this case, only NORTH, SOUTH and CENTER are used.
container.add( jPanel2, BorderLayout.NORTH);
jButton1.setText("Click Here To Calculate");
jButton1.addActionListener
container.add(resultArea, BorderLayout.CENTER);
container.add(jButton1, BorderLayout.SOUTH);
}
public void actionPerformed(ActionEven
{
try
{
// The text fields pass strings, so you must create integers out of the field values.
int p=Integer.parseInt(jTextFi
n=Integer.parseInt(jTextFi
resultArea.setText("");
// This applet should caculate the monthly payment, Interest per pay period, Number of pay periods
// Amortization shcedule .
if (p>i)
temp = ( p*i / (1-(1+(i)/100)^(n-1)^2));
else
temp = ( p*i / (1-(1+(i)/100)^(n-1)^2));
resultArea.setText("" + temp);
}
catch (Exception ex)
{
// this gives an error when an exception accurs
resultArea.setText("Input properly please!");
}
}
}
Here is the HTML to call the applet
<HTML>
<HEAD>
<TITLE>Unit 5 IP Add</TITLE>
</HEAD>
<BODY>
Here is the output of my program:
<APPLET CODE="IP5.class"WIDTH="600
</APPLET>
</BODY>
</HTML>
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