import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;public class TestKeyListener extends Applet implements KeyListener
{
Cloor clr;
public void init()
{
addKeyListener(this);
}
}
public void class keyTyped (KeyEvent e){
if(e.getKeyChar()=='r'||e.getKeyChar()=='R')
clr=Color.red;
else if(e.getKeyChar()=='g'||e.getKeyChar()=='G')
clr=Color.green;
else if(e.getKeyChar()=='b'||e.getKeyChar()=='B')
clr=Color.blue;
else
clr=Color.black;
setBackground(clr);
}public void class keyReleased(KeyEvent e){
}
public void class keyPressed(Key Event e){
}}小弟初学JAVA,请各位大侠帮我看看这个实现KeyListener接口,响应敲击键盘的小程序.有几处错误,不知道怎么改. 谢谢
import java.awt.Graphics;
import java.awt.Color;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;public class TestKeyListener extends Applet implements KeyListener
{
Cloor clr;
public void init()
{
addKeyListener(this);
}
}
public void class keyTyped (KeyEvent e){
if(e.getKeyChar()=='r'||e.getKeyChar()=='R')
clr=Color.red;
else if(e.getKeyChar()=='g'||e.getKeyChar()=='G')
clr=Color.green;
else if(e.getKeyChar()=='b'||e.getKeyChar()=='B')
clr=Color.blue;
else
clr=Color.black;
setBackground(clr);
}public void class keyReleased(KeyEvent e){
}
public void class keyPressed(Key Event e){
}}小弟初学JAVA,请各位大侠帮我看看这个实现KeyListener接口,响应敲击键盘的小程序.有几处错误,不知道怎么改. 谢谢
import java.awt.Graphics;
import java.awt.Color;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;public class TestKeyListener extends Applet implements KeyListener
{
Color clr;
public void init()
{
addKeyListener(this);
}
public void keyTyped (KeyEvent e){
if(e.getKeyChar()=='r'||e.getKeyChar()=='R')
clr=Color.red;
else if(e.getKeyChar()=='g'||e.getKeyChar()=='G')
clr=Color.green;
else if(e.getKeyChar()=='b'||e.getKeyChar()=='B')
clr=Color.blue;
else
clr=Color.black;
setBackground(clr);
}public void keyReleased(KeyEvent e){
}
public void keyPressed(KeyEvent e){
}}
都是些低级错误,呵呵