Java Swing How to - Use JFormattedTextField to format number

Question

We would like to know how to use JFormattedTextField to format number.
Answer

import java.awt.GridLayout;
import java.math.RoundingMode;
import java.text.NumberFormat;
/*from   www. j ava  2s. co  m*/
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.text.NumberFormatter;

public class Main {

  public static void main(String[] args) throws Exception {
    NumberFormat format = NumberFormat.getNumberInstance();
    format.setMaximumFractionDigits(2);
    format.setMinimumFractionDigits(2);
    format.setParseIntegerOnly(true);
    format.setRoundingMode(RoundingMode.HALF_UP);

    NumberFormatter formatter = new NumberFormatter(format);
    formatter.setMaximum(1000);
    formatter.setMinimum(0.0);
    formatter.setAllowsInvalid(false);
    // formatter.setOverwriteMode(false);

    JFormattedTextField tf = new JFormattedTextField(formatter);
    tf.setColumns(10);
    tf.setValue(123456789.99);
    JFormattedTextField tf1 = new JFormattedTextField(formatter);
    tf1.setValue(1234567890.99);
    JFormattedTextField tf2 = new JFormattedTextField(formatter);
    tf2.setValue(1111.1111);
    JFormattedTextField tf3 = new JFormattedTextField(formatter);
    tf3.setValue(-1111.1111);
    JFormattedTextField tf4 = new JFormattedTextField(formatter);
    tf4.setValue(-56);

    JFrame frame = new JFrame("Test");
    frame.setLayout(new GridLayout(5, 0));
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(tf);
    frame.add(tf1);
    frame.add(tf2);
    frame.add(tf3);
    frame.add(tf4);
    frame.pack();
    frame.setVisible(true);
  }
}