Kann nicht instanziiert werden der Typ... ,was bedeutet es?

Habe ich dieses GUI, ich will laufen und wenn ich versuche, ein Objekt aus der Klasse, bekomme ich die Fehlermeldung kann Nicht instanziiert die Art GUI. Also, was bedeutet es und wie kann ich das beheben?

Den code in der mainclass

public static void main(String[] args){


    //Classes

    GUI go = new GUI();



    //Running Class Methods



    //JFrame
    //JFrame frame = new JFrame("Yatsy");



    go.setVisible(true);
    go.setVisible(true);
    //go.setLocation((dim.width - width) /2, (dim.height - height) /2);
    go.setSize(width, height);
    System.out.println(width + " " + height);
    //draw paint = new draw();
    //go.add(paint);

}

code in der GUI-Klasse

public GUI(){
    super();
    panel = new JPanel();
    roll = new JButton("Roll");
    nextPlayer = new JButton("Next Player");
    bDice1 = new JButton("dice");
    quit = new JButton("Quit");
    use = new JButton("Use");

    roll.addActionListener(
            new ActionListener(){
        public void actionPerformed(ActionEvent event){


            if(turn == true){

                rollResult1 = roll1();
                rollResult2 = roll2();
                rollResult3 = roll3();
                rollResult4 = roll4();
                rollResult5 = roll5();

                sRollResult1 = Integer.toString(rollResult1);
                sRollResult2 = Integer.toString(rollResult2);
                sRollResult3 = Integer.toString(rollResult3);
                sRollResult4 = Integer.toString(rollResult4);
                sRollResult5 = Integer.toString(rollResult5);


                rolls++;
                start = false;
                repaint();
                System.out.println(  rollResult1 + "   " + rollResult2 + "   " + rollResult3 + "   " + rollResult4 + "   " + rollResult5);
                //System.out.println( rollAI );

            }
            if(rolls == 3){
                turn = false;
                System.out.println("Out of rolls");
            }

        }
    });

    nextPlayer.addActionListener(
            new ActionListener(){
        public void actionPerformed(ActionEvent event){

            if(rolls > 0){
                rolls = 0;
                System.out.println("Next player");
                turn = true;
                repaint();
                start = true;
            }
        }

    });

    quit.addActionListener(
            new ActionListener(){
        public void actionPerformed(ActionEvent event){

            System.exit(0);

        }

    });

    add(panel, BorderLayout.CENTER);
    panel.setBackground(Color.BLUE);
    add(quit,  BorderLayout.SOUTH);
    add(roll, BorderLayout.NORTH);
    add(nextPlayer, BorderLayout.EAST);

    Handlerclass handler = new Handlerclass();
    panel.addMouseListener(handler);
}

So Frage ich mich, warum erhalte ich eine Fehlermeldung?

Ich bin mit java 1.7!

Für diejenigen, die wissen wollen, dies ist der vollständige code!!!!

package Christofer;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public abstract class GUI extends JFrame implements MouseListener{
    private static final long serialVersionUID = 1L;


    int dice1, dice2, dice3, dice4, dice5;




    private JButton roll;
    private JButton nextPlayer;
    private JButton bDice1;
    private JButton quit;
    private JButton use;
    private JPanel panel;
    public int rolls = 0;
    public boolean turn = true;
    public boolean start = true;

    boolean saved1 = false, saved2 = false, saved3 = false, saved4 = false, saved5 = false;


    int rollResult1;
    int rollResult2;
    int rollResult3;
    int rollResult4;
    int rollResult5;

    String sRollResult1, sRollResult2, sRollResult3, sRollResult4, sRollResult5;


    public GUI(){
        super();
        panel = new JPanel();
        roll = new JButton("Roll");
        nextPlayer = new JButton("Next Player");
        bDice1 = new JButton("dice");
        quit = new JButton("Quit");
        use = new JButton("Use");

        roll.addActionListener(
                new ActionListener(){
            public void actionPerformed(ActionEvent event){


                if(turn == true){

                    rollResult1 = roll1();
                    rollResult2 = roll2();
                    rollResult3 = roll3();
                    rollResult4 = roll4();
                    rollResult5 = roll5();

                    sRollResult1 = Integer.toString(rollResult1);
                    sRollResult2 = Integer.toString(rollResult2);
                    sRollResult3 = Integer.toString(rollResult3);
                    sRollResult4 = Integer.toString(rollResult4);
                    sRollResult5 = Integer.toString(rollResult5);


                    rolls++;
                    start = false;
                    repaint();
                    System.out.println(  rollResult1 + "   " + rollResult2 + "   " + rollResult3 + "   " + rollResult4 + "   " + rollResult5);
                    //System.out.println( rollAI );

                }
                if(rolls == 3){
                    turn = false;
                    System.out.println("Out of rolls");
                }

            }
        });

        nextPlayer.addActionListener(
                new ActionListener(){
            public void actionPerformed(ActionEvent event){

                if(rolls > 0){
                    rolls = 0;
                    System.out.println("Next player");
                    turn = true;
                    repaint();
                    start = true;
                }
            }

        });

        quit.addActionListener(
                new ActionListener(){
            public void actionPerformed(ActionEvent event){

                System.exit(0);

            }

        });

        add(panel, BorderLayout.CENTER);
        panel.setBackground(Color.BLUE);
        add(quit,  BorderLayout.SOUTH);
        add(roll, BorderLayout.NORTH);
        add(nextPlayer, BorderLayout.EAST);

        Handlerclass handler = new Handlerclass();
        panel.addMouseListener(handler);
    }




    public void paint(Graphics g){
        Graphics2D g2d = (Graphics2D)g;
        this.setBackground(Color.BLUE);



        g2d.setColor(Color.WHITE);
        g2d.fillRoundRect(getWidth() / 2 - 75, getHeight() / 2 - 50, 30, 30, 5, 5);   //Dice 1
        g2d.fillRoundRect(getWidth() / 2 - 40, getHeight() / 2 - 50, 30, 30, 5, 5);   //Dice 2
        g2d.fillRoundRect(getWidth() / 2 - 5, getHeight() / 2 - 50, 30, 30, 5, 5);    //Dice 3
        g2d.fillRoundRect(getWidth() / 2 + 30, getHeight() / 2 - 50, 30, 30, 5, 5);    //Dice 4
        g2d.fillRoundRect(getWidth() / 2 + 65, getHeight() / 2 - 50, 30, 30, 5, 5);    //Dice 5


        //Score Board
        g2d.fillRect(30, 70, 370, getHeight() - 125);
        g2d.setColor(Color.BLACK);
        g2d.drawLine(150, 70, 150, getHeight() - 30);
        g2d.drawLine(30, 70, 400, 70);
        g2d.drawString("Ones", 35, 85);
        g2d.drawLine(30, 90, 400, 90);
        g2d.drawString("Twos", 35, 105);
        g2d.drawLine(30, 110, 400, 110);
        g2d.drawString("Threes", 35, 125);
        g2d.drawLine(30, 130, 400, 130);
        g2d.drawString("Fours", 35, 145);
        g2d.drawLine(30, 150, 400, 150);
        g2d.drawString("Fives", 35, 165);
        g2d.drawLine(30, 170, 400, 170);
        g2d.drawString("Sixes", 35, 185);
        g2d.drawLine(30, 190, 400, 190);


        if(start == false){
            g.setColor(Color.BLACK);

            Font font = new Font("Arial", Font.PLAIN, 25);
            g2d.setFont(font);
            g2d.drawString( sRollResult1 + "   " + sRollResult2 + "   " + sRollResult3 + "   " + sRollResult4 + "   " + sRollResult5, getWidth() / 2 - 70 , getHeight() / 2 - 25 );

            if(turn == false){
                g2d.setColor(Color.RED);
                g2d.drawString("Out Of Rolls", getWidth() / 2 - 70, getHeight() / 2 - 75);
            }
        }


    }

    public int roll1(){

        if (saved1 == false){
            dice1 = (int )(Math.random() * 6 + 1);
        }


        return dice1;
    }

    public int roll2(){
        if (saved2 == false){
            dice2 = (int )(Math.random() * 6 + 1);
        }
        return dice2;

    }

    public int roll3(){
        if (saved3 == false){
            dice3 = (int )(Math.random() * 6 + 1);
        }
        return dice3;

    }

    public int roll4(){
        if (saved4 == false){
            dice4 = (int )(Math.random() * 6 + 1);
        }
        return dice4;

    }

    public int roll5(){

        if (saved5 == false){
            dice5 = (int )(Math.random() * 6 + 1);
        }
        return dice5;

    }

    private class Handlerclass implements MouseListener{






    @Override
        public void mouseClicked(MouseEvent e) {

    }

    @Override
        public void mouseEntered(MouseEvent e) {

    }

        public void mouseExited(MouseEvent e) {

    }

        public void mousePressed(MouseEvent e) {
            mx = e.getX();
            my = e.getY();

            System.out.println("X: " + mx + "  Y: " + my);

            if(mx < getWidth() / 2 - 75 && mx > getWidth() / 2 - 45 && my < getHeight() / 2 - 50 && my > getHeight() / 2 - 20){
                System.out.println("saved1 = true");

            }
        }

        public void mouseReleased(MouseEvent e) {

    }

    }

        }

Ich weiß, dass ich habe einige Reinigung zu tun