Java The Complete Reference, Seventh Edition

}
}

// Set up and initialize the GUI.
private void makeGUI() {

// Use a grid bag layout.

GridBagLayout gbag = new GridBagLayout();

GridBagConstraints gbc = new GridBagConstraints();

setLayout(gbag);

JLabel heading = new

JLabel("Find Loan Balance ");

JLabel orgPLab = new JLabel("Original Principal ");

JLabel paymentLab = new JLabel("Amount of Payment ");

JLabel numPayLab = new JLabel("Number of Payments Made ");

JLabel rateLab = new JLabel("Interest Rate ");

JLabel remBalLab = new JLabel("Remaining Balance ");

orgPText = new JTextField(10);

paymentText = new JTextField(10);

remBalText = new JTextField(10);

rateText = new JTextField(10);

numPayText = new JTextField(10);

// Payment field for display only.

remBalText.setEditable(false);

doIt = new JButton("Compute");

// Define the grid bag.

gbc.weighty = 1.0; // use a row weight of 1

gbc.gridwidth = GridBagConstraints.REMAINDER;

gbc.anchor = GridBagConstraints.NORTH;

gbag.setConstraints(heading, gbc);

// Anchor most components to the right.

gbc.anchor = GridBagConstraints.EAST;

gbc.gridwidth = GridBagConstraints.RELATIVE;

gbag.setConstraints(orgPLab, gbc);

gbc.gridwidth = GridBagConstraints.REMAINDER;

gbag.setConstraints(orgPText, gbc);

gbc.gridwidth = GridBagConstraints.RELATIVE;

gbag.setConstraints(paymentLab, gbc);

gbc.gridwidth = GridBagConstraints.REMAINDER;

gbag.setConstraints(paymentText, gbc);

gbc.gridwidth = GridBagConstraints.RELATIVE;

gbag.setConstraints(rateLab, gbc);

Chapter 32: Financial Applets and Servlets 957