Help with JSlider

Hi, I am stuck on creating the Jslider, when i compile the code i get an error on "else if (e.getSource() == value) {"which says the symbol variable of value.Also, when i run the programme to change colour the colour doesnt change and i get some errors on a diffrent window, please check my code and see where am going wrong.
thanks

// Class definition

public class ExampleSolution8_2 extends JPanel implements ActionListener {

    private JButton moveLeft, moveRight, makeBigger, makeSmaller;
    private JComboBox shapeChoice;
    private JComboBox colourChoice;
    private Shape colour;
    private Point firstPoint;
    private Circle firstCircle;
    private Square firstSquare;
    private Doughnut firstDoughnut;
    private Triangle firstTriangle;
    private Rectangle firstRectangle;
    private Point aShape;
    private Point Colour;
    private JSlider slider;
    private int Value = 1 ;
    private int minimumvalue = 1 ;
   private int maximumvalue = 100; 
  private int initvalue = 0;
   

    
    // Constructor method declaration

    public ExampleSolution8_2() {
        
       /// moveLeft = new JButton("Move Left");
        ////add(moveLeft);
        ////moveLeft.addActionListener(this);

       //// moveRight = new JButton("Move Right");
        ///add(moveRight);
        ///moveRight.addActionListener(this);
        
       ////makeBigger = new JButton("Make Bigger");
        ///add(makeBigger);
       ////makeBigger.addActionListener(this);

        ////makeSmaller = new JButton("Make Smaller");
       ///add(makeSmaller);
        ///makeSmaller.addActionListener(this);
        
        shapeChoice = new JComboBox();
        shapeChoice.addItem("Point");
        shapeChoice.addItem("Square");
        shapeChoice.addItem("Circle");
        shapeChoice.addItem("Doughnut");
        shapeChoice.addItem("Triangle");
        shapeChoice.addItem("Rectangle");
        add(shapeChoice);
        shapeChoice.addActionListener(this);
        
        colourChoice = new JComboBox();
        colourChoice.addItem("Black");
       colourChoice.addItem("Red");
        colourChoice.addItem("Green");
        colourChoice.addItem("Blue");
        colourChoice.addItem("Yellow");
        colourChoice.addItem("Purple");
        add(colourChoice);
        colourChoice.addActionListener(this);
        aShape = Colour;


        // Instantiate shape classes
        firstPoint = new Point();
        firstCircle = new Circle();
        firstSquare = new Square();
        firstDoughnut = new Doughnut();
        firstTriangle = new Triangle();
        firstRectangle = new Rectangle();
        
        // Initially assign aShape a Point object
        aShape = firstPoint;
        // Local variable declarations
      
       // Instantiate a slider using Swing class JSlider  
       slider = new JSlider(JSlider.HORIZONTAL, 100, 10);
       add(slider);

       // Add the slider to the north portion of the JPanel
       ///add(slider, BorderLayout.NORTH);

        // Create a new window using the Swing class JFrame and add this panel
        makeFrame();
    }
   
    public void actionPerformed(ActionEvent e) {
        // Manipulate respective object when buttons pressed
        if (e.getSource() == moveLeft) {
              aShape.moveXY(-20, 0);
        }

       else if (e.getSource() == moveRight) {
              aShape.moveXY(20, 0);
        }

        else if (e.getSource() == makeBigger) {
              aShape.reSize(20);
        }

        else if (e.getSource() == makeSmaller) {
              aShape.reSize(-20);
        }
        
        // checkbox assigns object to aShape
        else if (e.getSource() == shapeChoice) {
            if (shapeChoice.getSelectedItem().equals("Circle"))
                aShape = firstCircle;
            else if (shapeChoice.getSelectedItem().equals("Square"))
                aShape = firstSquare;
            else if (shapeChoice.getSelectedItem().equals("Point"))
                aShape = firstPoint;
            else if (shapeChoice.getSelectedItem().equals("Doughnut"))
                aShape = firstDoughnut;
                 else if (shapeChoice.getSelectedItem().equals("Triangle"))
                aShape = firstTriangle;
                 else if (shapeChoice.getSelectedItem().equals("Rectangle"))
                aShape = firstRectangle;
        }
        {
      if (e.getSource() == colourChoice) {
      if (colourChoice.getSelectedItem().equals("Black"))
       aShape = Colour;
     else if (colourChoice.getSelectedItem().equals("Red"))
      aShape = Colour;
      else if (colourChoice.getSelectedItem().equals("Green"))
      aShape = Colour;
      else if (colourChoice.getSelectedItem().equals("Yellow"))
      aShape = Colour;
      else if (colourChoice.getSelectedItem().equals("Purple"))
      aShape = Colour;
    }
       else if (e.getSource() == value) {
                    }
  { if (slider.getValue() >= 20)  aShape.reSize(20);
    if (slider.getValue() >= 30)   aShape.reSize(20);
    aShape.reSize(20);
     if  (slider.getValue() >= 40)  aShape.reSize(20);
      aShape.reSize(20);
    if (slider.getValue() >= 50)  aShape.reSize(20);

           aShape.reSize(20);

   if (slider.getValue() < 60)

           aShape.reSize(20);

        }

   {

     //  if (e.getSource() == colorChoice)

        

       { 
           // Ask Java to repaint the window to reflect the updates made
        repaint();
    }
}
}}
    // Provide this method to instruct Java what to do when repainting the window
    public void paintComponent(Graphics g) {
        
        super.paintComponent(g);

        // Call the respective methods from respective class to print the new co-ordinate values
        aShape.outputXYCoords(g);

        // Call the respective methods from respective class to redraw the shape
        aShape.display(g);
        // Call the respective methods to redraw the shapeColour
   
      //g.setColour(Color);
      add(slider, BorderLayout.NORTH);
    }

     
    // Create a window frame
    
    public void makeFrame() {

        // Instantiate a window frame using Swing class JFrame
        JFrame frame = new JFrame("ExampleSolution8_2");

        // When the window is closed terminate the application
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });

        // set initial size of window
        frame.setSize(800, 600);

        // add the current object to the centre of the frame and make visible
        frame.getContentPane().add(this, BorderLayout.CENTER);
        frame.setVisible(true);
    }   
}