JAVA中焦点在JTextField中按下键盘TAB键却监听不到

[N_GWW]

如题，按下TAB键，监听不到这个操作，可是焦点却转移了，应该怎样才能监听到TAB键？？？

[逆乾坤]

this.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET);     this.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET);

详细可参考：Swing_快捷键JTextField

[N_GWW]

[Quote=引用 1 楼 devil_cpp 的回复:]

Java code

this.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET); this.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, Collections.EM……
[/Quote]
这个是什么意思呢

[N_GWW]

1楼的代码是代表什么意思呢

[帅的被人砍xxx]

//经过测试果然,可以,膜拜大神,感谢!代码如下

package com.test.swing;

import java.awt.Dimension;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Collections;

import javax.swing.JFrame;

public class Test extends JFrame {

	public Test(){
		super();
		//this.setPreferredSize(new Dimension(300,200));

		this.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET);
		this.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET);

		this.setSize(new Dimension(300,200));
		
		this.addKeyListener(new KeyListener() {
			
			@Override
			public void keyTyped(KeyEvent e) {
				//System.out.println(e);
			}
			
			@Override
			public void keyReleased(KeyEvent e) {
				//System.out.println(e);
				
			}
			
			@Override
			public void keyPressed(KeyEvent e) {
				System.out.println(e);
				
			}
		});
		this.setAlwaysOnTop(true);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//		this.pack();
		this.setLocationRelativeTo(null);
		this.setVisible(true);
		
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		new Test();
	}

}