Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.text.NumberFormat;

import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main extends JPanel {
    JFormattedTextField loanAmountField = new JFormattedTextField(NumberFormat.getCurrencyInstance());

    public Main() {
        loanAmountField.setColumns(8);
        loanAmountField.setEditable(false);
        loanAmountField.setFocusable(false);
        add(loanAmountField);
        add(new JButton(new CalculateListener(loanAmountField)));
    }

    public static void main(String[] args) {
        Main mainPanel = new Main();
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(mainPanel);
        f.pack();
        f.setVisible(true);
    }
}

class CalculateListener extends AbstractAction {
    JFormattedTextField loanAmountField;

    public CalculateListener(JFormattedTextField loanAmountField) {
        super("Calculate");
        putValue(MNEMONIC_KEY, KeyEvent.VK_C);
        this.loanAmountField = loanAmountField;
    }

    public void actionPerformed(ActionEvent event) {
        loanAmountField.setValue(new Double(12.22));
    }
}