Keyword This needs help

Question

i have this code......
package Project;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.awt.image.*;
/*Scope use*/
import java.awt.geom.*;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.event.*;
public class Picture extends JPanel
     /* variables */
     JLabel pic;
     private int HORIZONTAL;
     private int VERTICAL;
     /* Scope */
     Ellipse2D.Double scope;
    BufferedImage image;
    Dimension targetSize;
    double scale;
public Picture()
         scope = new Ellipse2D.Double(0, 0, 150, 150);
         targetSize = new Dimension();
         ScopeController control = new ScopeController(this);
         addMouseListener(control);
         addMouseMotionListener(control);
          pic = new JLabel();
          add(pic);
          setVisible(true);
class PictureThread extends Thread implements Runnable
     private int sleepTime;
     PictureThread picThread;
public PictureThread(String name)
          super(name);
          sleepTime=(int) (5000);
public void start()
          picThread= new PictureThread("pic" );
          picThread.start();
public void run()
          int i=1;
          while(i<=21)
               System.err.println(i);
               createImage("" +i);
               i++;
            try
                 Thread.sleep(sleepTime);
                 System.out.println("Tried to sleep1");
            catch(InterruptedException e)
                 System.out.println("Ai yo, gt interrupted");
public Image createImage(String filename)
               ImageIcon image=new ImageIcon("images/"+filename+".PNG");
               return image.getImage();
public class ImagePanel extends JPanel
          private Image image=null;
public void showImage(Image image)
          this.image=image;               
          repaint();
public void paintComponent(Graphics g)
          super.paintComponent(g);
          g.drawImage(image,0,0,850,256,this);
class ScopeController extends MouseInputAdapter
    ScopeTest test;
    Point offset;
    boolean dragging;
public ScopeController(ScopeTest st)
        test = st;
        offset = new Point();
        dragging = false;
public void mousePressed(MouseEvent e)
        Point p = e.getPoint();
        if(test.scope.contains(p))
            offset.x = (int)(p.x - test.scope.x);
            offset.y = (int)(p.y - test.scope.y);
            dragging = true;
public void mouseReleased(MouseEvent e)
        dragging = false;
public void mouseDragged(MouseEvent e)
        if(dragging)
            int x = e.getX() - offset.x;
            int y = e.getY() - offset.y;
            test.setScope(x, y);
    }There is an error which i cannot solve...
--------------------Configuration: <Default>--------------------
C:\Documents and Settings\user.TEMASEK-P1OHXPC\My Documents\Project\Picture.java:32: cannot find symbol
symbol : constructor ScopeController(Project.Picture)
location: class Project.ScopeController
ScopeController control = new ScopeController(this);
^
1 error
how do i solve tis problem??

Answer 1

ScopeController control = new ScopeController(this);While creating a ScopeController object ,u are passing this object i.e.
object of Picture class. But the ScopeController constructor requires
ScopeTest object
public ScopeController(ScopeTest st)If u have developed the aboev code, u might be knowing what these different classes are.