Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;

import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.text.MaskFormatter;

public class Main extends JPanel {

    private JFormattedTextField formatText = new JFormattedTextField(createFormatter("##:##"));

    public Main() {
        formatText.setColumns(20);
        formatText.setText("00:00");

        setLayout(new BorderLayout());
        add(new JLabel("Enter only numbers"), BorderLayout.NORTH);
        add(formatText, BorderLayout.CENTER);
    }

    private MaskFormatter createFormatter(String s) {
        MaskFormatter formatter = null;
        try {
            formatter = new MaskFormatter(s);
        } catch (java.text.ParseException exc) {
            System.err.println("formatter is bad: " + exc.getMessage());
        }
        return formatter;
    }

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