一、
設置文本框只能輸入數字
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jTextField3.addKeyListener(new KeyListener(){
public void keyTyped(KeyEvent e) {
int i =(int)e.getKeyChar();
if(i>='0'&&i<='9')
return;
else
e.consume(); //關鍵，屏蔽掉非法輸入，終止默認的行爲
}
public void keyPressed(KeyEvent e) { }
public void keyReleased(KeyEvent e) { }
});
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二、設置回車快捷鍵
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this.getRootPane().setDefaultButton(jButton1);
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三、鍵盤管理：KeyboardFocusManager KeyEventPostProcessor
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package com.zami.wms.main.test;
import java.awt.KeyEventPostProcessor;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
/**
*
* @author zzh
*/
public class ESCTest extends JFrame{
/** Creates a new instance of ESCTest */
public static void main(String args[]) {
try {
ESCTest frame = new ESCTest();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
public ESCTest(){
super();
setTitle("Press ESC TO Exit");
setBounds(100, 100, 500, 375);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
KeyboardFocusManager manager = KeyboardFocusManager
.getCurrentKeyboardFocusManager();
manager.addKeyEventPostProcessor(new MyKeyEventPostProcessor());
}
}
class MyKeyEventPostProcessor implements KeyEventPostProcessor{
public boolean postProcessKeyEvent(KeyEvent event){
if (KeyEvent.VK_ESCAPE == event.getKeyCode()){
System.exit(0);
}
if (KeyEvent.VK_D == event.getKeyCode()){
System.out.println("ddd");
}
return true;
}
}
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四、無載體鍵盤
