compile error

[missmara77]

Hi can someone help me with this error ...
C:\Users\yomara.cordero\AppData\Local\Temp\7zOB19B .tmp\MortgagePaymentCalculator.java:338: error: cannot find symbol
new Chart((int)(loanTerm/12));
^
symbol: class Chart
location: class MortgagePaymentCalculator
Note: C:\Users\yomara.cordero\AppData\Local\Temp\7zOB19B .tmp\MortgagePaymentCalculator.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error

Tool completed with exit code 1

This is the code i used below: Please help with a solution thanks

import java.awt.BorderLayout; // Code to Import and Provide Layout of Window
import java.awt.GridLayout; // Code to Import the Layout in Grid Format
import java.awt.event.ActionEvent; // Code to Import Action
import java.awt.event.ActionListener; // Code to Import Listener for Action
import javax.swing.JButton; // Code to Import Use of Buttons
import javax.swing.JFrame; // Code to Import Use of Frame
import javax.swing.JLabel; // Code to Import Use of Label
import javax.swing.JPanel; // Code to Import Use of Panel
import javax.swing.JTextField; // Code to Import Use of Text Field
import javax.swing.JTextArea; // Code to Import Use of Text Area
import javax.swing.JScrollPane; // Code to Import Scroll Pane
import javax.swing.JComboBox; // Code to Import JCombo Box
import java.text.DecimalFormat; // Code to Import Decimal Format to Eliminate Extra Places Past Decimal Point
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import javax.swing.JOptionPane;
import java.awt.Dimension;
import java.io.*;
import java.util.StringTokenizer;

// Create Mortgage Payment Class

public class MortgagePaymentCalculator extends JFrame
{


DecimalFormat Dollar = new DecimalFormat("$###,###.00");

// Declare Variables and Values

private double loanAmount; // Amount of Loan
private double loanTerm; // Term of Loan
private double loanRate; // Interest Rate of Loan
private double monthlyRate; // Amount of Monthly Interest
private double monthlyPayment; // Amount of Monthly Payment
private double monthlyInterest; // Amount of Monthly Interest Rate
private double monthlyamountInterest; // Amount of Monthly Interest
private double monthlyPrinciple; // Amount of Monthly Principle
private double loanBalance; // Balance of Loan
private double newBalance; // New Monthly Balance of Loan
private double newMonthlyBalance;
private double newMonthlyPayment;
private double newLoanTerm;
private double newBalInt; // New Term of Loan
private static int numberOfLinesGenerated=1;

// GUI elements to Display Current Information
private JLabel principalLabel = new JLabel(" Mortgage Principal : ");
private JTextField principalText = new JTextField(10);

private JLabel yearsLabel = new JLabel(" Mortgage Time In Years : ");
private JTextField yearsText = new JTextField(10);

private JLabel rateLabel = new JLabel(" Amount Interest Rate : ");
private JTextField rateText = new JTextField(10);

private JRadioButton rbutton1 = new JRadioButton();
private JRadioButton rbutton2 = new JRadioButton();

private ButtonGroup buttongroup = new ButtonGroup();

private JTextArea result = new JTextArea(10, 20);
JScrollPane scrollingResult = new JScrollPane(result);

private JButton btnCalculate = new JButton("Calculate");
private JButton btnReset = new JButton("Reset");

private JButton btnNext = new JButton("Next");
private JButton btnExit = new JButton("Exit");
private JButton btnChart = new JButton("Chart");

private JPanel centerPanel = new JPanel();
private JPanel buttonPanel = new JPanel();
private JPanel nextButtonPanel = new JPanel();
JPanel p=new JPanel(new BorderLayout());


String scheme[] = {"Select Scheme","7 years at 5.35%","10 years at 5.0%","15 years at 5.5%","30 years at 5.75%"};

private JLabel schemeLabel = new JLabel(" Mortgage Scheme : ");

private JComboBox combo = new JComboBox(scheme);

// Create Container for Information
public MortgagePaymentCalculator() {

btnCalculate.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
onButtonCalculate();
}
});

btnReset.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
onButtonReset();
}
});

btnNext.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
onButtonNext();
}
});

btnExit.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
});
btnChart.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
onButtonChart();
}
});


centerPanel.setLayout(new GridLayout(5, 2,3,3));

centerPanel.add(principalLabel);
centerPanel.add(principalText);

rbutton1.setText("Get Values From File OR ");
rbutton2.setText("Choose Values ");

buttongroup.add(rbutton1);
rbutton1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
rbutton1ActionPerformed(evt);
}
});
rbutton1.setSelected(true);
buttongroup.add(rbutton2);
rbutton2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
rbutton2ActionPerformed(evt);
}
});

centerPanel.add(rbutton1);
centerPanel.add(rbutton2);

centerPanel.add(yearsLabel);
centerPanel.add(yearsText);

centerPanel.add(rateLabel);
centerPanel.add(rateText);

centerPanel.add(btnCalculate);
centerPanel.add(btnReset);

nextButtonPanel.add(btnChart);
nextButtonPanel.add(btnNext);
nextButtonPanel.add(btnExit);

final Dimension dim = new Dimension(200, 200);



setLayout(new BorderLayout());

add(centerPanel, BorderLayout.NORTH);


p.add(nextButtonPanel, BorderLayout.NORTH);
p.add(scrollingResult, BorderLayout.SOUTH);


btnExit.setEnabled(false);
btnNext.setEnabled(false);
btnChart.setEnabled(false);


add(p, BorderLayout.SOUTH);



pack();
setDefaultCloseOperation(EXIT_ON_CLOSE );
setResizable(false);
setTitle("Mortgage Calculator");
setVisible(true);
}

private void rbutton1ActionPerformed(ActionEvent evt)
{
if(rbutton1.isSelected()){
centerPanel.removeAll();
centerPanel.add(principalLabel);
centerPanel.add(principalText);

centerPanel.add(rbutton1);
centerPanel.add(rbutton2);

centerPanel.add(yearsLabel);
centerPanel.add(yearsText);

centerPanel.add(rateLabel);
centerPanel.add(rateText);

centerPanel.add(btnCalculate);
centerPanel.add(btnReset);

setVisible(true);
}
}
private void rbutton2ActionPerformed(ActionEvent evt)
{
if(rbutton2.isSelected()){
centerPanel.removeAll();
centerPanel.add(principalLabel);
centerPanel.add(principalText);

centerPanel.add(rbutton1);
centerPanel.add(rbutton2);

centerPanel.add(schemeLabel);
centerPanel.add(combo);

centerPanel.add(btnCalculate);
centerPanel.add(btnReset);

setVisible(true);
}
}
// Calculate Information
public void onButtonCalculate()
{
double loanAmt=Double.parseDouble(principalText.getText() );
AssignloanAmount(loanAmt); // Assign Amount of Loan

if(rbutton1.isSelected())
{
try
{

StreamTokenizer st=new StreamTokenizer(new BufferedReader(new FileReader("loandata.txt")));
int linecount=0;
while(st.nextToken()!=StreamTokenizer.TT_EOF)
{
if(st.lineno() ==numberOfLinesGenerated)
{
if(st.ttype==StreamTokenizer.TT_NUMBER)
AssignloanTerm(st.nval*12);
yearsText.setText(""+st.nval);
st.nextToken();
if(st.ttype==StreamTokenizer.TT_NUMBER)
AssignloanRate(st.nval);
rateText.setText(""+st.nval);

break;
}
System.out.println (st.lineno()) ;
}

}catch (Exception addException){//Catch exception if any
JOptionPane.showMessageDialog(null, "Error While reading Loandata file\n" + addException);
}

}
else
{
String str = (String)combo.getSelectedItem();
if(str.equals("7 years at 5.35%"))
{
AssignloanRate(5.35);
AssignloanTerm(7*12);
}
else
if(str.equals("10 years at 5.0%"))
{
AssignloanRate(5.0);
AssignloanTerm(10*12);
}
else
if(str.equals("15 years at 5.5%"))
{
AssignloanRate(5.5);
AssignloanTerm(15*12);
}
else
if(str.equals("30 years at 5.75%"))
{
AssignloanRate(5.75);
AssignloanTerm(30*12);
}
}

CalculatemonthlyPayment(); // Calculate Monthly Payment of Loan
CalculatemonthlyInterest(); // Calculate Monthly Interest on Loan
CalculatemonthlyPrinciple(); // Calculate Monthly Principle of Payment
CalculateloanBalance(); // Calculate Loan Balance
CalculatenewBalance(); // Calculate New Balance Each Month
DisplayAmounts(); // Display All Amounts
MonthlyloanAmount();
MonthlybalanceInterest(getAssignloanAmount(), getAssignloanTerm(), getAssignloanRate());
++numberOfLinesGenerated;
if(numberOfLinesGenerated>4)
numberOfLinesGenerated=1;
btnCalculate.setEnabled(false);
btnReset.setEnabled(false);
btnExit.setEnabled(true);
btnNext.setEnabled(true);
btnChart.setEnabled(true);
}

// Information for Button
public void onButtonReset()
{
principalText.setText("");
yearsText.setText("");
rateText.setText("");
result.setText("");
}
public void onButtonNext()
{
btnCalculate.setEnabled(true);
btnReset.setEnabled(true);
btnExit.setEnabled(false);
btnNext.setEnabled(false);
btnChart.setEnabled(false);

}
public void onButtonChart()
{
new Chart((int)(loanTerm/12));
System.out.println(""+loanTerm);

}

// Display Methods to Print Values for Morgage Calculator

public void AssignloanAmount(double loanAmountFromMain)
{
loanAmount = loanAmountFromMain;
}

public void AssignloanRate(double interestAmountFromMain)
{
loanRate = interestAmountFromMain;
}

public void AssignloanTerm(double termAmountFromMain)
{
loanTerm = termAmountFromMain;
}

public double getAssignloanAmount()
{
return loanAmount;
}

public double getAssignloanRate()
{
return loanRate ;
}

public double getAssignloanTerm()
{
return loanTerm;
}

public void CalculatemonthlyPayment()
{
monthlyRate = (loanRate / 100) / 12;
monthlyPayment = loanAmount*((monthlyRate*(Math.pow((1 + monthlyRate),loanTerm)))/(Math.pow((1 + monthlyRate),loanTerm)-1));
}
public void CalculatemonthlyInterest()
{
monthlyInterest = (loanRate / 12) / 100;
monthlyamountInterest = loanAmount * monthlyInterest;

}

public void CalculatemonthlyPrinciple()
{
monthlyPrinciple = monthlyPayment - monthlyamountInterest;
}

public void CalculateloanBalance()
{
loanBalance = loanAmount - monthlyPrinciple;

}

public void CalculatenewBalance()
{
newBalance = loanBalance - monthlyPrinciple;
}
public void MonthlyloanAmount()
{
result.append("Month\tLoanBalance\tInterest Paid\n");
double newloanTerm = loanTerm;
while (newloanTerm>0)
{
double loanMonths = loanTerm-newloanTerm;

double newMonthlyBalance = loanAmount*((Math.pow((1 + monthlyInterest),loanTerm))-(Math.pow((1 + monthlyInterest),loanMonths)))/(Math.pow((1 + monthlyInterest),loanTerm)-1);

double monthlyamountInterest = newMonthlyBalance * monthlyInterest;

result.append(""+Math.round(newloanTerm) + "\t" + Dollar.format(newMonthlyBalance) + "\t" + Dollar.format(monthlyamountInterest) + "\n");


newloanTerm = newloanTerm - 1;

}
}
public void MonthlybalanceInterest(double loan, double term, double interestRate)
{

DecimalFormat df = new DecimalFormat("$###,###.00"); // Format Decimal Point

double monthlyRate = (interestRate/(12*100)); // Get Monthly Interest Rate
// Calculate Discount Factor
double discountFactor = (Math.pow((1 + monthlyRate), term) -1) / (monthlyRate * Math.pow((1 + monthlyRate), term));
double payment1 = loan / discountFactor; // Calculate Monthly Payment

// Display Program Results
result.append("\nLoan Amount = " + df.format(loan));
result.append("\nInterest Rate = " + interestRate + "%");
result.append("\nLength of Loan = " + Math.round(term/12) +" years");
result.append("\nMonthly Payment = " + df.format(payment1) + "\n");
}

public void DisplayAmounts()
{
System.out.println("Loan Amount = " + Dollar.format(loanAmount)); // Show Original Loan Amount
System.out.println("Interest Rate = " + loanRate +"%"); // Show Interest Rate
System.out.println("Length of Loan = " + Math.round(loanTerm) + " months"); // Show Length of Loan
System.out.println("Monthly Payment = " + Dollar.format(monthlyPayment)); // Show Monthly Payment
}
public static void waitScroll()
{
try
{
Thread.sleep(50);
} catch (InterruptedException e)
{
e.printStackTrace();
}
}

// Beginning of Main
public static void main(String[] args)
{

MortgagePaymentCalculator newloan = new MortgagePaymentCalculator(); // Create Instance of Class

}
}

[JosAH]

Hi can someone help me with this error ...
C:\Users\yomara.cordero\AppData\Local\Temp\7zOB19B .tmp\MortgagePaymentCalculator.java:338: error: cannot find symbol
new Chart((int)(loanTerm/12));
^
symbol: class Chart
location: class MortgagePaymentCalculator

The compiler can't find a definition of the symbol Chart; it looks like a class to me but (fortunately) the compiler is more stupid so it started to complain immediately: what is Chart?

kind regards,

Jos