帮忙看一下这个程序
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;
public class TimerMIDLet extends MIDlet {
Display display;
Snow snow=new Snow();
SnowMover mover=new SnowMover();
Time timer=new Timer();
public TimeMIDlet(){
display=Display.getDisplay(this);

}
protected void destroyedApp(boolean unconditional())
{ }
protected void startApp(){
display.setCurrent(snow);
timer.schedule(mover,100,100);
}
protected void pauseApp(){}
public void exit(){
time.cancel();
destroyApp(true);
notifyDestroyed();
}

}
class SnowMover extends TimerTask{
public void run(){
snow.scroll();
}

}
class Snow extends Canvas{
int height;
int width;
int[] snows;
Random generator=new Random();
boolean painting=false;
public Snow(){
height=getHeight();
width=getWidth();
snows=new int[height];
for(int i=0;i <height;i++){
snows[i]=-1;
}
}
public void scroll(){
if(painting)return;
for(int i=height-1;i> 0;--i){
snows[i]=snows[i-1];
}
snows[0]=(generator.nextInt()%(3*width))/2;
if(snows[0]> =width){
snows[0]=-1;
}
repaint();
}
protected void paint(Graphics g)
{painting=true;
g.setColor(180,180,180);
g.fillRect(0,0,width,height);
g.setColor(255,255,255);
for(int y=0;y <height;++y){
int x=snows[y];
if(x==-1)continue;
g.drawLine(x,y,x+2,y+2);
painting=false;
}
protected void keypressed(int keycode){
exit();
}
}
}

[解决办法]
看了...楼主素高人,这样的代码能编译吗?!
[解决办法]
错误百出
类名和构造方法名不一致，方法参数格式写错,接口方法名错误，括号位置错误

建议lz用IDE来开发
附修改过的代码：

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;

public class TimerMIDLet extends MIDlet {
Display display;

Snow snow = new Snow();

SnowMover mover = new SnowMover();

Timer timer = new Timer();

public TimerMIDLet() {
display = Display.getDisplay(this);

}

protected void destroyApp(boolean unconditional) {
}

protected void startApp() {
display.setCurrent(snow);
timer.schedule(mover, 100, 100);
}

protected void pauseApp() {
}

public void exit() {
timer.cancel();
destroyApp(true);
notifyDestroyed();
}

class SnowMover extends TimerTask {
public void run() {
snow.scroll();
}

}

class Snow extends Canvas {
int height;

int width;

int[] snows;

Random generator = new Random();

boolean painting = false;

public Snow() {
height = getHeight();
width = getWidth();
snows = new int[height];
for (int i = 0; i < height; i++) {
snows[i] = -1;
}
}

public void scroll() {
if (painting)
return;
for (int i = height - 1; i > 0; --i) {
snows[i] = snows[i - 1];
}
snows[0] = (generator.nextInt() % (3 * width)) / 2;
if (snows[0] > = width) {
snows[0] = -1;
}
repaint();
}

protected void paint(Graphics g) {
painting = true;
g.setColor(180, 180, 180);
g.fillRect(0, 0, width, height);
g.setColor(255, 255, 255);
for (int y = 0; y < height; ++y) {
int x = snows[y];
if (x == -1)
continue;
g.drawLine(x, y, x + 2, y + 2);
painting = false;
}
}

protected void keyPressed(int keycode) {
exit();
}
}
}

[解决办法]
没感觉。
[解决办法]
。。。代码有点乱。。。