java添加鼠标点击事件 javaswing 鼠标事件

二级java要考swing，顺手整理了一下，记住这些可以去安逸的去做填空大题啦。

• 动作事件监听器(btn按钮

btn.addActionListener(new ActionListener(){
 public  void actionPerformed(ActionEvent e){}
});

• 焦点事件监听器(jt文本框

jt.addFocusListener(new FocusListener(){
 public void focusLost(FocusEvent e){}//失去焦点
 public void focusGained(FocusEvent e){}获得焦点
});

• 键盘事件(textField

textField.addKeyListener(new KeyListener(){
 public void keyTyped(KeyEvent e){}//点一下
 public void keyPressed(KeyEvent e){}//长按
 public void keyReleased(KeyEvent e){}//松开
 
});

• 鼠标事件(label

label.addMouseListener(new MouseListener){
 public void mouseEntered(MouseEvent e){}//鼠标移入
 public void mousePressed(MouseEvent e){}//长按
 public void mouseReleased(MouseEvent e){}//松开
 public void mouseClicked(MouseEvent e){}//单击
 public void mouseExited(MouseEvent e){}//鼠标移出
});

• 窗体焦点事件(window(可省略)

window.addWindowFocusListener(new WindowFocusListener(){
 public void windowGainedFocus(WindowEvent e);//获得焦点
 public void windowLostFocus(WindowEvent e);//失去焦点
});

• 窗体状态事件(window(可省略)

window.addWindowStateListener(new WindowFocusListener(){
 public void windowStateChanged(WindowEvent e){
  //int oldState=e.getOldState();
  //int newState=e.getNewState();
 }
});

• 窗体事件

class a implements WindowListener{
public void windowActivited(WindowEvent e){};
public void windowOpened(WindowEvent e){};
public void windowIconified(WindowEvent e){};
public void windowDeiconified(WindowEvent e){};
public void windowClosing(WindowEvent e){};
public void windowDeactivated(WindowEvent e){};
public void windowClosed(WindowEvent e){};
}

• 选项事件(comboBox 下拉列表框

comboBox.addItemListener(new ItemListener(){
 public void itemStateChanged(ItemEvent e){}
});