addMouseMotionListener error

[Derek Boring]

This is probably a simple answer that will make me feel retarded, but i'm not seeing the problem. Please help guys!

I have a class I'm writing that extends JPanel. I want the JPanel to produce mouseMove events, but the code following this paragraph produces the error shown below it.

MouseMotionListener actMove = new MouseMotionListener(){
public void mouseMoved(MouseEvent m){
mMoved(m);
}
public void mouseDragged(MouseEvent m){
//placeholder
}
};

addMouseMotionListener(actMove);

The error is:

Exception in thread "main" java.lang.Error: Unresolved compilation problem:
Syntax error on token "actMove", VariableDeclaratorId expected after this token

It says the error is on the "actMove" that is in the "addMouseMotionListener" paranthesis.
Anybody know what I could be doing wrong?
[ July 24, 2007: Message edited by: Zero ]

[Mark Spritzler]

"Zero",
Welcome to the JavaRanch.

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[Manuel Moons]

The code you are showing us is correct! (supposing that you have an mMoved(MouseEvent me); method)

I am thinking that there is something else in the class file where you got the snippet from that is causing your problem. If you have not located your problem at this time it might be better that you show us an entire class that produces the error (compilation error).

[Derek Boring]

First off, my apologies on the name thing.


I still haven't been able to find the problem. I'm posting the class below this. I don't know how much this explanation will help, but maybe the more info I give you guys, the more you can help: I'm making a platform game that uses a string array to store the level. Each cell of the level has an object, and a color, stored in the following format: "object-r.g.b" All the confusing code in the 'paint' event is decoding each cell and drawing it. The other methods are probably self explanatory, but let me know if clarification is needed. By the way, this code is not for the game itself, it's for a component of the level editor. This panel is to be shown inside a JScrollPane.

The bolded text is where the error occurs:

class EditorPanel extends JPanel{
String[][] level;
int boxX = 0, boxY = 0;
public EditorPanel(){
//placeholder
}
public void sendLevel(String[][] l){
level = l;
}
public void paint(Graphics gr){

gr.clearRect(0,0,getWidth(),getHeight());
String s, o;
int r,g,b;
int a,c,d;
for(int x = 0; x < 100; x++){
for(int y = 0; y < 100; y++){
s = level[x][y];
a = s.indexOf('-');
o = s.substring(0,a);
d = s.lastIndexOf('.');
c = s.indexOf('.');
b = Integer.valueOf(s.substring(d+1));
g = Integer.valueOf(s.substring(c+1,d));
r = Integer.valueOf(s.substring(a+1,c));

//System.out.println("("+x+", "+y+") o= "+o+" r="+r+" g="+g+" b="+b);
gr.setColor(new Color(r,g,b));
gr.fillRect(x*32, y*32, 32, 32);

}//y
}//x
gr.setColor(ColInv(getCellColor(boxX,boxY)));
gr.drawRect(boxX*32, boxY*32, 32, 32);
gr.drawRect(boxX*32+1, boxY*32+1, 30, 30);
//vPort.repaint();
}
public Color getCellColor(int cx, int cy){
String s, o;
int r,g,b;
int a,c,d;
 
s = level[cx][cy];
a = s.indexOf('-');
o = s.substring(0,a);
d = s.lastIndexOf('.');
c = s.indexOf('.');
b = Integer.valueOf(s.substring(d+1));
g = Integer.valueOf(s.substring(c+1,d));
r = Integer.valueOf(s.substring(a+1,c));
return new Color(r,g,b);
}
public Color ColInv(Color col){
int r = col.getRed();
int g = col.getGreen();
int b = col.getBlue();
return new Color(255-r,255-g,255-b);
}
MouseMotionListener actMove = new MouseMotionListener(){
public void mouseMoved(MouseEvent m){
mMoved(m);
}
public void mouseDragged(MouseEvent m){
//placeholder
}
};
addMouseMotionListener([B]actMove[/B]);

private void mMoved(MouseEvent m){
int mx = m.getX();
int my = m.getY();
boxX = (int)Math.round(mx/32);
boxY = (int)Math.round(my/32);
}


}

Anybody see anything I didn't?
[ July 25, 2007: Message edited by: Derek Boring ]

[Michael Dunn]

I don't get the error message you do, but it doesn't compile because
addMouseMotionListener(actMove);
needs to be inside a method.

compiles OK when moving all the mouseMotionListener code to the constructor

    
  public EditorPanel(){
    //placeholder
    MouseMotionListener actMove = new MouseMotionListener(){
    public void mouseMoved(MouseEvent m){
      mMoved(m);
    }
    public void mouseDragged(MouseEvent m){
      //placeholder
    }
  };
  addMouseMotionListener(actMove);
  }
 

[Derek Boring]

Thanks, that helped.