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 = "你刚才敲的字母是" + ch + "其键盘码为" + code;
}
else {
s = "你刚才敲的不是字母";
}
repaint();
} public void keyReleased(KeyEvent e) {} public void keyTyped(KeyEvent e) {}
}
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 = "你刚才敲的字母是" + ch + "其键盘码为" + code;
}
else {
s = "你刚才敲的不是字母";
}
repaint();
} public void keyReleased(KeyEvent e) {} public void keyTyped(KeyEvent e) {}
}
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