Java键盘事件监听(2)

[java]
package com.han; 
 
import java.awt.Container; 
import java.awt.FlowLayout; 
 
import javax.swing.JFrame; 
import javax.swing.JLabel; 
import javax.swing.JTextField; 
 
/**
 * 键盘事件监听(2)
 * @author HAN
 *
 */ 
public class KeyEvent_2 extends JFrame { 
 
    /**
     * 
     */ 
    private static final long serialVersionUID = 8599016812375478424L; 
 
    public KeyEvent_2() { 
        // TODO Auto-generated constructor stub  
        Container container = getContentPane(); 
        container.setLayout(new FlowLayout()); 
        JLabel label = new JLabel("实现只允许输入数字的文本框："); 
        JTextField textField = new DigitOnlyField(10); 
        container.add(label); 
        container.add(textField); 
         
    } 
 
    /**
     * @param args
     */ 
    public static void main(String[] args) { 
        // TODO Auto-generated method stub  
        KeyEvent_2 frame = new KeyEvent_2(); 
        frame.setTitle("实现只允许输入数字的文本框"); 
        frame.pack(); 
        frame.setVisible(true);     www.zzzyk.com
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    } 
 
} 

package com.han;

import java.awt.Container;
import java.awt.FlowLayout;

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

/**
 * 键盘事件监听(2)
 * @author HAN
 *
 */
public class KeyEvent_2 extends JFrame {

 /**
  *
  */
 private static final long serialVersionUID = 8599016812375478424L;

 public KeyEvent_2() {
  // TODO Auto-generated constructor stub
  Container container = getContentPane();
  container.setLayout(new FlowLayout());
  JLabel label = new JLabel("实现只允许输入数字的文本框：");
  JTextField textField = new DigitOnlyField(10);
  container.add(label);
  container.add(textField);
  
 }

 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  KeyEvent_2 frame = new KeyEvent_2();
  frame.setTitle("实现只允许输入数字的文本框");
  frame.pack();
  frame.setVisible(true);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 }

}

 作者：Gaowen_HAN
 

补充：软件开发 , Java ,

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