Java JFormattedTextField number field for integer

import java.awt.FlowLayout;
import java.text.NumberFormat;

import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;

public class Main extends JFrame {
  public Main() {
    super("JButton");

    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setLayout(new FlowLayout());
    JLabel nameLabel = new JLabel("Value:");
    /*  w w w  . j a v  a2s .c o m*/
    JFormattedTextField name = new JFormattedTextField(NumberFormat.getIntegerInstance());
    name.setValue(new Integer(123));

    Integer intValue = (Integer) name.getValue();
    System.out.println(intValue);
    
    JTextField text = new JTextField("Click here to see the validation result");

    getContentPane().add(nameLabel);
    getContentPane().add(name);
    getContentPane().add(text);

  }


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

import java.awt.Color;
import java.awt.FlowLayout;
import java.text.NumberFormat;

import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.text.NumberFormatter;

public class Main extends JFrame {
  public Main() {
    super("JButton");

    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setLayout(new FlowLayout());
    JLabel nameLabel = new JLabel("Value:");
    JFormattedTextField name = createIntegerTextField(0, 100, 10,25);
    JTextField text = new JTextField("Click here to see the validation result");

    getContentPane().add(nameLabel);/*w w w  .j a  v  a2  s .co  m*/
    getContentPane().add(name);
    getContentPane().add(text);

  }

  public static JFormattedTextField createIntegerTextField(final int min, final int max, final int now,
      final int columnNumber) {
    final NumberFormatter formatter = new NumberFormatter(NumberFormat.getIntegerInstance());
    formatter.setMinimum(min);
    formatter.setMaximum(max);
    final JFormattedTextField TF = new JFormattedTextField(formatter);
    TF.setValue(now);
    TF.setColumns(columnNumber);
    return TF;
  }

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