Cannot resolve symbol class MouseHandler error message....

[ddmeightball]

I am getting that error message when I compile my java program that I am writing. It is at Line 23. I am trying to put this code, in the first block there,
into an anonymous class in the second block of code. Can I put an anonymous class there or not?

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * Title:        Assign 1
 * @author       Matthew Davis
 * 				 SECC
 */


public class DrawSquare extends JPanel{

  Point location;
  Point mouseLocation;
  //constructor 
  
  public DrawSquare()
  {

    this.setPreferredSize(new Dimension(200,150));
    this.addMouseListener(
    	new MouseHandler(){//cannot resolve symbol class MouseHandler error
    		  public void mouseClicked(MouseEvent e)
    			{//e.getPoint MouseClicked method redraws image or shape.
   				mouseLocation=e.getPoint();

				if (location.x<=mouseLocation.x && location.y<=mouseLocation.y)
					{
						location.x = (int)(Math.random()* 100);
						location.y = (int)(Math.random()* 100);
						repaint();
					}//end if statement
		
   				}//end mouseclicked
    		
    		
    		
    		
    		
    			});//end mousehandler
    location = new Point(50,50);
    
  }
  
  //use the graphics context to draw
  public void paintComponent(Graphics g)
  {
  	int x=50;
  	int y=50;
    super.paintComponent(g);
    System.out.println("The red square should be moving ...");
    g.setColor(Color.red);
	g.drawRect(location.x, location.y, x, y);
  }
    
 /* class MouseHandler extends MouseAdapter
  	{//use MouseAdapter Class

    	
    	    	public void mouseClicked(MouseEvent e)
    	{//e.getPoint MouseClicked method redraws image or shape.
   		mouseLocation=e.getPoint();

		if (location.x<=mouseLocation.x && location.y<=mouseLocation.y)
			{
				location.x = (int)(Math.random()* 100);
				location.y = (int)(Math.random()* 100);
				repaint();
			}
		
   		}
    	
    	
    	
    	
    	
    	
   }*/
}

I added the file to a ZIP if you would rather look at it there.

Oh, just a basic description of what the program does(it has another file with it in the zip file i attached). It draws a shape (a square in this case) and invite the user to click on it. When the user clicks on the shape, move it to a new random location.



<Moderator added green checkmark in the first thread>

[System_Error]

Well, first off, mouse handler class is not public. I'm not sure it makes sense to do this first. You have a super class, a class that extends that super class and then your trying to create an instanse of that subclass that extends the super class in the super class. I think the best thing to do, would be keep it in one class. I wouldn't split up simple functionalilty like that.

[ddmeightball]

Well, first off, mouse handler class is not public. I'm not sure it makes sense to do this first. You have a super class, a class that extends that super class and then your trying to create an instanse of that subclass that extends the super class in the super class. I think the best thing to do, would be keep it in one class. I wouldn't split up simple functionalilty like that.

huh? what do u mean?

If you were talking about that part at the end, it is a commented out section of code I was working on.

[ddmeightball]

OH, this is the code for the original, working version of DrawSquare.java
I realized that I didnt provide this so everyone could see it working.
This thing is, I have to use an anonymous class i nthe assignment that I am doing, so I can try alot of things. I just have to make it work.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * Title:        Assign 1
 * @author       Matthew Davis
 * 				 SECC
 */


public class DrawSquare extends JPanel{

  Point location;
  Point mouseLocation;
  //constructor 
  
  public DrawSquare()
  {

    this.setPreferredSize(new Dimension(200,150));
    this.addMouseListener(new MouseHandler());
    location = new Point(50,50);
    
  }
  
  //use the graphics context to draw
  public void paintComponent(Graphics g)
  {
  	int x=50;
  	int y=50;
    super.paintComponent(g);
    System.out.println("The red square should be moving ...");
    g.setColor(Color.red);
	g.drawRect(location.x, location.y, x, y);
  }
    
 class MouseHandler extends MouseAdapter
  	{//use MouseAdapter Class

    	
    public void mouseClicked(MouseEvent e)
    	{//e.getPoint MouseClicked method redraws image or shape.
   		mouseLocation=e.getPoint();

		if (location.x<=mouseLocation.x && location.y<=mouseLocation.y)
			{
				location.x = (int)(Math.random()* 100);
				location.y = (int)(Math.random()* 100);
				repaint();
			}		
   		}    	
   }
}

[System_Error]

huh? what do u mean?

If you were talking about that part at the end, it is a commented out section of code I was working on.

It's hard too explain.!!

[System_Error]

I'll help you with splitting it up into classes, but I'm getting ready for bed right now, and I have school tomorow. The thing is, you won't get much functionality out of a secon class in this case, but that's ok, I don't think your really looking for.

[ddmeightball]

I'll help you with splitting it up into classes, but I'm getting ready for bed right now, and I have school tomorow. The thing is, you won't get much functionality out of a secon class in this case, but that's ok, I don't think your really looking for.

yaeh, functionality and re-usability would be the way to go. I would just put the code back to the working version that I made, but the teacher wants it the certain way.

[System_Error]

The way you have it, were you have a super class and an inner class is probably the best way to go, if your wanting to split it up into different classes. Is this not working?

[ddmeightball]

The way you have it, were you have a super class and an inner class is probably the best way to go, if your wanting to split it up into different classes. Is this not working?

Yeah, i get the error message cannot resolve symbol class MouseHandler. I dont know what that means. I have never got an error like that before so I am cluess as of where to go from here.

[ddmeightball]

I figured out the MouseHandler error. That was the name of the class that I was calling to decide whether or not the square was clicked. I changed it to MouseAdapter and it worked just fine now. Thanks everyone for your help.

[System_Error]

your welcome, and glad you got it fixed.