C:\Documents and Settings\joão\j2mewtk\2.5.2\apps\game\src\MyCanvas.java:9: class Ball is public, should be declared in a file named Ball.java
public class Ball extends GameCanvas implements Runnable{
^
C:\Documents and Settings\joão\j2mewtk\2.5.2\apps\game\src\Game.java:33: cannot find symbol
symbol : class MyCanvas
location: class Game
MyCanvas gameCanvas;
^
C:\Documents and Settings\joão\j2mewtk\2.5.2\apps\game\src\Game.java:271: cannot find symbol
symbol : class MyCanvas
location: class Game
gameCanvas = new MyCanvas(false, this);