?? testevent.java
字號:
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class TestEvent extends Applet implements KeyListener
{
String s="";
public void init()
{
addKeyListener(this);
requestFocus();
}
public void paint(Graphics g)
{
g.drawString(s,20,20);
}
public void keyPressed(KeyEvent e)
{
char ch;
int code;
ch=e.getKeyChar( );
code=e.getKeyCode( );
if (((ch>='a')&&(ch<='z') )|| ((ch>='A')&&(ch<='Z')) )
s="你剛才敲的字母是 "+ch+" 其鍵盤碼為 "+code;
else
s="你剛才敲的不是字母 ";
repaint( );
}
public void keyReleased(KeyEvent e)
{}
public void keyTyped(KeyEvent e)
{ }
}
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