Errors with reading images

Question

i am creating a paint program with which users will be able to import their own images. this is my first applet so i do not know how to fix these runtime errors i am receiving. they are:
java.security.AccessControlException: access denied (java.io.FilePermission /private/Network/Servers/mhsfile/Volumes/IQ/IQ_2006/(censored)/Documents/Adv Java/ read)
     at java.security.AccessControlContext.checkPermission(AccessControlContext.java:269)
     at java.security.AccessController.checkPermission(AccessController.java:401)
     at java.lang.SecurityManager.checkPermission(SecurityManager.java:524)
     at java.lang.SecurityManager.checkRead(SecurityManager.java:863)
     at sun.awt.image.URLImageSource.<init>(URLImageSource.java:37)
     at sun.applet.AppletImageRef.reconstitute(AppletImageRef.java:33)
     at sun.misc.Ref.get(Ref.java:46)
     at sun.applet.AppletViewer.getCachedImage(AppletViewer.java:377)
     at sun.applet.AppletViewer.getImage(AppletViewer.java:372)
     at java.applet.Applet.getImage(Applet.java:226)
     at Draw.init(Draw.java:18)
     at sun.applet.AppletPanel.run(AppletPanel.java:353)
     at java.lang.Thread.run(Thread.java:552)

Answer 1

here is the code :
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Draw extends JApplet implements ActionListener
     JLabel insert = new JLabel("please insert a picture");
     JTextField filename = new JTextField ("");
     JButton Enter = new JButton("enter");
     Button erase = new Button("erase");
     DrawPanel canvas;
     public void init()
          Container con = this.getContentPane();
          filename.getText();
          con.add(filename);
          erase.addActionListener(this);
          canvas = new DrawPanel(getImage(getCodeBase()));
          BorderLayout bord = new BorderLayout();
          setLayout(bord);
          add(canvas,"Center");
          Panel commandPanel = new Panel();
          commandPanel.add(erase);
          add(commandPanel, "South");
     public void actionPerformed(ActionEvent evt)
          if(evt.getSource().equals(erase))
               canvas.numPoints = -1;
               canvas.repaint();
class DrawPanel extends Panel
     Image picture;
     int[] drawX = new int[1000];
     int[] drawY = new int[1000];
     int numPoints = -1;
     DrawPanel(Image inputImage)
     picture = inputImage;
     public void paint(Graphics screen)
     screen.drawImage(picture,0,0,this);
     screen.setColor(Color.black);
     for(int i = 0;i<= numPoints;i++)
               screen.fillOval(drawX[i]-3, drawY[i]-3,6,6);
     public void update(Graphics screen)
          paint(screen);
     public boolean mouseDown(Event evt, int x,int y)
          if(numPoints <1000)
               numPoints++;
               drawX[numPoints] = x;
               drawY[numPoints] = y;
          repaint();
          return true;
     public boolean mouseDrag(Event evt, int x, int y)
          mouseDown(evt, x, y);
          return true;
}