import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class KeyinEvent extends JFrame implements KeyListener
{
JTextArea textarea=new JTextArea(4,20);
Container c;
public KeyinEvent()
{
super("按鍵測試");
c=getContentPane();
c.setLayout(new FlowLayout());
textarea.addKeyListener(this);
c.add(textarea);
//textarea.setText("請按任意鍵");
setSize(300,120);
setVisible(true);
//addKeyListener(this);
}
public void keyPressed(KeyEvent e)
{
String line1="按鍵"+e.getKeyChar();
String line2="按鍵是否為Action鍵"+e.isActionKey();
String mkey=e.getKeyModifiersText(e.getModifiers());
String line3="是否按下Modifier鍵"+(mkey.equals("")?"否":"是，其鍵為："+mkey);
textarea.setText(line1+"\n"+line2+"\n"+line3+"\n");
}
public void keyReleased(KeyEvent e){}
public void keyTyped(KeyEvent e){}
public static void main(String[] args)
{
KeyinEvent be=new KeyinEvent();
be.addWindowListener(new MyWindowListener());
}
}
class MyWindowListener implements WindowListener
{
public void windowActivated(WindowEvent e)
{
System.out.println("窗口為活動狀態");
}
public void windowClosed(WindowEvent e)
{
System.out.println("窗口為關閉狀態");
System.exit(0);
}
public void windowClosing(WindowEvent e)
{
System.out.println("窗口正在關閉");
System.exit(0);
}
public void windowDeactivated(WindowEvent e)
{
System.out.println("窗口不再活動");
}
public void windowDeiconified(WindowEvent e)
{
System.out.println("窗口由最小化變為正常");
}
public void windowIconified(WindowEvent e)
{
System.out.println("窗口為最小化");
}
public void windowOpened(WindowEvent e)
{
System.out.println("窗口首次可見");
}
}