I have successfully completed a project that I have been working on. However, I want to clean the image up slightly. This code consists of 2 different calculators and I would like to divide them with some sort of divider. Can anyone assist? Any help is greatly appreciated.

import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.NumberFormat;
import java.text.DecimalFormat;

public class Mortgage1 extends JFrame implements ActionListener
    {
    //This creates the buttons, radio buttons, and input fields
    private JTextField LoanInput;
    private JTextField LoanAmount;
    private JTextArea show;
    private JRadioButton selection1;
    private JRadioButton selection2;
    private JRadioButton selection3;
    private JButton Calculate;
    private JButton Clear;
    private JPanel panelAdder;
    private JLabel labela;
    private JLabel labelt;
    private JLabel labelr;
    private JTextField textFieldMortgagePayment;
    private JTextField textFieldMortgageTerm;
    private JTextField textFieldInterestRate;
    private JTextField textFieldTotal;
    private JButton buttonCalc;


    public Mortgage1()
       {
     super("Alex Melo, Week 3 individual assignment");
       setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       setVisible(true);
       setLayout(new FlowLayout());
       pack();

        // This is where the textfields, buttons, and radio buttons go
        LoanInput= new JTextField(10);
        LoanAmount = new JTextField(15);
        LoanAmount.setEditable (false);
        selection1= new JRadioButton("7 year at 5.35%");
        selection2= new JRadioButton("15 year at 5.5%");
        selection3= new JRadioButton("30 year at 5.75%");
        ButtonGroup group = new ButtonGroup();
        group.add(selection1);
        group.add(selection2);
        group.add(selection3);
        selection1.setSelected(true);
        panelAdder = new JPanel();
        labela = new JLabel("Mortgage Amount  ");
        textFieldMortgagePayment = new JTextField();
        labelt = new JLabel("Mortgage Term   ");
        textFieldMortgageTerm = new JTextField();
        labelr = new JLabel("Interest Rate   ");
        textFieldInterestRate = new JTextField();
        textFieldTotal = new JTextField();
        buttonCalc = new JButton("Calculate");
        buttonCalc.addActionListener(this);
        Calculate = new JButton("Calculate");
        Calculate.addActionListener(this);
        Clear = new JButton ("Clear");
        Clear.addActionListener(this);
        show = new JTextArea(20,40);
        Container content = getContentPane();
        JPanel loanPanel = new JPanel(new GridLayout(6,2));
        textFieldTotal.setEditable(false);
        textFieldTotal.setColumns(10);
        textFieldMortgagePayment.setColumns(8);
        textFieldMortgageTerm.setColumns(4);
        textFieldInterestRate.setColumns(4);

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

        //Put labels, buttons, and text field in panel


        loanPanel.add(new JLabel("Enter loan amount: "));
        loanPanel.add(LoanInput);
        loanPanel.add(new JLabel("PLEASE SELECT YOUR LOAN: "));
        loanPanel.add(selection1);
        loanPanel.add(new JLabel(" "));
        loanPanel.add(selection2);
        loanPanel.add(new JLabel(" "));
        loanPanel.add(selection3);
        loanPanel.add( new JLabel("Your monthly payment total is: "));
        loanPanel.add(LoanAmount);
        JPanel button = new JPanel();
        panelAdder.add(labela);
        panelAdder.add(textFieldMortgagePayment);
        panelAdder.add(labelt);
        panelAdder.add(textFieldMortgageTerm);
        panelAdder.add(labelr);
        panelAdder.add(textFieldInterestRate);
        panelAdder.add(buttonCalc);
        panelAdder.add(textFieldTotal);
        contentPane.add(panelAdder);
        content.add(loanPanel);

        // add buttons and text to panel
        button.add(Calculate);
        button.add(Clear);
        content.add(button);
        content.add(new JScrollPane(show));
        }
        //This is where the formula's begin

        private int[] mortgageterms = {7,15,30};
        private double[] mortgagerates = {.0535,.055,.0575};

        public void actionPerformed(ActionEvent e)

        {
         Object source = e.getSource();
              if(source == Calculate)
        {
            double mortgageamount=0;
            int mortgageterm=0;
            double mortgagerate=0;
            double mortgagepayment;

            try{
                mortgageamount = Double.parseDouble(LoanInput.getText().trim());
            }
            catch(NumberFormatException ex1)
            {
            JOptionPane.showMessageDialog(this,"ERROR!");
            return;
            }

            if(selection1.isSelected())
            {
                mortgageterm  = mortgageterms[0];
                mortgagerate = mortgagerates[0];
            }
            else if(selection2.isSelected())
            {
                mortgageterm  = mortgageterms[1];
                mortgagerate = mortgagerates[1];
            }
            else if(selection3.isSelected())
            {
                mortgageterm  = mortgageterms[2];
                mortgagerate = mortgagerates[2];
            }
            mortgagepayment= mortgageamount * Math.pow(1 + mortgagerate / 12, mortgageterm * 12)* (mortgagerate / 12) / (Math.pow(1 + mortgagerate / 12, mortgageterm * 12) - 1);
            LoanAmount.setText("$"+String.format("%.2f", mortgagepayment));
            display(mortgageamount, mortgageterm, mortgagerate, mortgagepayment);
        }

        //This is the action event listener for the clear button
        else if ("Clear".equals(e.getActionCommand()))
                {
                    Clear();
                }

            double MortgagePayment = Double.parseDouble (textFieldMortgagePayment.getText());
            double MortgageTerm =   Double.parseDouble(textFieldMortgageTerm.getText())*12;
            double InterestRate =   Double.parseDouble(textFieldInterestRate.getText()) / 100.;
            double Total = MortgagePayment * (Math.pow(1+(InterestRate/12), MortgageTerm) * InterestRate/12) / (Math.pow(1 + InterestRate/12, MortgageTerm) - 1);
            //decimal format
                DecimalFormat df = new DecimalFormat("#,###.##");
       textFieldTotal.setText(df.format(Total));


        }
            //This is the action for the clear button.
            public void Clear()
               {
                LoanInput.setText ("");
                LoanAmount.setText("");
                LoanInput.requestFocus();
                show.setText("");
                }


    private void display(double mortgageamount, int mortgageterm, double mortgagerate, double mortgagepayment)
    {
        double mortgagebalance = mortgageamount;

        // This shows the full amount of information left (i.e. balance, interest paid, etc)
        show.append("-----------------------------------------------------------------------------\n");
        show.setText("Month       Balance Left      Payment Amount   Interest Paid\n");
        show.append("-----------------------------------------------------------------------------\n");
       int count = 0;
        for(int month = 0; month <= mortgageterm * 12;month++)
        {
            double interestPaid = mortgagebalance * mortgagerate/12;
            show.append(String.format("%4d          $%,10.2f             $%,10.2f                 $%,8.2f\n",
                  month, mortgagebalance, mortgagepayment, interestPaid));
            mortgagebalance = mortgagebalance - mortgagepayment + interestPaid;

            if(count++ == 12)
            {
                count =1;
                if(month < mortgageterm*12)
                   show.append("-----------------------------------------------------------------------------\n");
                show.append("Month       Balance Left       Payment Amount    Interest Paid\n");
                   show.append("-----------------------------------------------------------------------------\n");
           }
        }
    }





    public static void main(String[] args){
            JFrame display = new Mortgage1();
            display.setSize(750,760);
            display.setVisible(true);
            }
    }

JSplitPane?

I tried adding

JSplitPane jsp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);

This compiled, but no divider appeared. Any ideas?

I'm a total n00b when it comes to Java. I inserted that code into my panel. What do you mean by instantiating it? Thanks a million for all your help.

Now I'm completely lost. If I'm reading this right, it will provide a scrolling bar. My concept is basically to place a line between the top calculation formula and the bottom one. Nothing fancy, but something to differentiate the 2. Does that make sense?

It provides a sliding bar, not a scrolling bar, that "resizes" the two panels. You can, however, fix the slider position thereyby creating the exact "divider" that you want. You simply need to place each "half" on it's own panel, and those panels as the two "parts" of the splitpane.

This article has been dead for over six months. Start a new discussion instead.