너무 답답해서  미치겟음...

초장부터 부탁질이라서 좀 그런데  자바 그림판 이거 어디가 틀린거야 도대체..ㅠㅠ


import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;

public class Draw implements Serializable {
 
 private int x,y,x1,y1;
 private int dist;
 
 public int getDist(){return dist;}
 
 public void setDist(int dist){this.dist = dist;}
 
 public int getX(){return x;}
 
 public int getY(){return y;}
 
 public void setY(int y){this.y=y;}
 
 public int getX1(){return x1;}
 
 public void setX1(int x1){this.x1 = x1;}
 
 public int getY1(){return y1;}
 
 public void setY1(int y1){this.y1 = y1;}
 
 
}

class Exam_03_sub extends Frame implements ItemListener,MouseListener,
MouseMotionListener{
 private MenuBar mb = new MenuBar();
 private Menu draw = new Menu("DRAW");
 private CheckboxMenuItem pen = new CheckboxMenuItem("PEN",true);
 private CheckboxMenuItem Line = new CheckboxMenuItem("LINE");
 private CheckboxMenuItem oval = new CheckboxMenuItem("OVAL");
 private CheckboxMenuItem rect = new CheckboxMenuItem("RECT");
 
 private int x,y,x1,y1;
 
 private Vector vc = new Vector();
 
 

 public Exam_03_sub(String title){
  super(title);
  this.init();
  this.start();
  
  super.setSize(300,200);
  Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
  Dimension frm = super.getSize();
  int xpos = (int)(screen.getWidth()/2 - frm.getWidth()/2);
  int ypos = (int)(screen.getHeight()/2 - frm.getHeight()/2);
  super.setLocation(xpos,ypos);
  super.setResizable(false);
  super.setVisible(true);
  
 }
 
 public void update(Graphics g){
  
  paint(g);
  
 }
 
 public void paint(Graphics g){
  
  for(int i = 0; i < vc.size(); ++i){
   Draw d = (Draw)vc.elementAt(i);
   if(d.getDist() ==1){
    g.drawLine(d.getX(),d.getY(),d.getX1(),d.getY1());
   }
   else if(d.getDist() == 2){
    g.drawOval(d.getX(),d.getY(),d.getX1() - d.getX(),d.getY1() - d.getY());
   }
   else if(d.getDist() == 3){
    g.drawRect(d.getX(),d.getY(),d.getX1() - d.getX(),d.getY1() - d.getY());
   }
  }
  
  if(Line.getState() == true){
   g.drawLine(x,y,x1,y1);
  }
  else if(oval.getState() == true){
   g.drawOval(x,y,x1 - x,y1 -y);
  }
  else if(rect.getState() == true){
   g.drawRect(x,y,x1 - x,y1 -y);
  }

 }
 
 public void start(){
  this.addWindowListener(new WindowAdapter());
   public void windowClosing(WindowEvent e){
    System.exit(0);
   }
 }
 
 pen.addItemListener(this);
 line.addItemListener(this);
 oval.addItemListener(this);
 rect.addItemListener(this);
 
 this.addMouseListener(this);
 this.addMouseMotionListener(this);
 
 
 }

 public void itemStateChanged(ItemEvent e){
 
 pen.setState(false);
 line.setState(false);
 oval.setState(false);
 rect.setState(false);
 
 CheckboxMenuItem imsi = (CheckboxMenuItem)e.getSource();
 imsi.setState(true);
}

 public void mouseClicked(MouseEvent e){}
 
 public void mouseEntered(MouseEvent e){}
 
 public void mouseExited(MouseEvent e){}
 
 public void mousePressed(MouseEvent e){
  x = e.getX();
  y = e.getY();
 }
 public void mouseReleased(MouseEvent e){
  x = e.getX();
  y = e.getY();
  this.repaint();
  
  if(pen.getState() != true){ int dist=0;
  if(line.getState()== true){dist = 1;
  }
  else if(oval.getState() == true){
   dist = 2;
  }
  else if(rect.getState() == true){
   dist = 3;
  }
  Draw d = new Draw();
  d.setDist(dist);
  d.setX1(x);
  d.setY(y);
  d.setX1(x1);
  d.setY1(y1);
  vc.add(d);
  
 }
 }
 
 public void mouseDragged(MouseEvent e){
  x1 = e.getX();
  y1 = e.getY();
  this.repaint();
  if(pen.getState()){
   Draw d = new Draw();
   d.setDist(1);
   d.setX1(x);
   d.setY(y);
   d.setX1(x1);
   d.setY1(y1);
   vc.add(d);
   x = x1;
   y = y1;
  }
  }
 
 public void mouseMoved(MouseEvent e){}
 
 }
 
 public class Exam_03{
  public static void main(String[] ar){
   Exam_03_sub ex = new Exam_03_sub("Test_그림판");
  }
 }
 
 }
  
}