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Thread: ERROR : "CLASS NAME IS ABSTRACT CANNOT BE INSTATIATED"

  1. #1
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    Default ERROR : "CLASS NAME IS ABSTRACT CANNOT BE INSTATIATED"

    GUYS WHAT IS THE COURSE OF THIS ERROR



    import java.awt.event.*;
    import javax.swing.*;
    import tict.TicTGui;
     
    //import tict.TicTGui;
     
      abstract class TicT implements ActionListener
    {
    	/*	Variables*/
        private javax.swing.JButton button1;
        private javax.swing.JButton button2;
        private javax.swing.JButton button3;
        private javax.swing.JButton button4;
        private javax.swing.JButton button5;
        private javax.swing.JButton button6;
        private javax.swing.JButton button7;
        private javax.swing.JButton button8;
        private javax.swing.JButton button9;
        private javax.swing.JFrame jFrame1;
     
        private String letter = "";
        public static int count = 0;
     
        /*Make The Window Visible*/
         public void run()
                {
                    new TicTGui().setVisible(true);
                    setCount(1);
     
                }
     
     
     
        private void setCount(int i)
        {
            throw new UnsupportedOperationException("Not yet implemented");
        }
     
    	/*Calculate Who's Turn It Is*/
        public int  WhoToPlay()
        {
     
            if(count == 1 || count == 3 || count == 5 || count == 7 || count == 9|| count == 11)
            {
                letter = "X";
     
            } else
            		if(count == 2 || count == 4 || count == 6 || count == 8 || count == 10)
            {
                letter = "O";
            }
    		return count;
        }
     
    	/*checking who plays*/
       	public void MakeYourMove(int count)
    	{
    		/*int me=0;
    		int you=0;
    		if(count%2==2)
    		{
    			count=me;
    		}
    		else
    		{
    		 	count=you;
    		}*/
     
     
        	for(int i=0;i<9;i++)
        	{
     
        		if(count==1)
        		{
    			 String input = JOptionPane.showInputDialog("welcome  you will take X and computer wiil take O \n Please ENTER number you want to play ");
            		 int pawn = Integer.parseInt(input);
                    //set letter  to choosen buttons
                    switch (input)
                    {
                        case "1":
                            button1.setText("X");
                            button1.setEnabled(false);
                            break;
                        case "2":
                            button2.setText("X");
                            button2.setEnabled(false);
                            break;
                        case "3":
                            button3.setText("X");
                            button3.setEnabled(false);
                            break;
                        case "4":
                            button4.setText("X");
                            button4.setEnabled(false);
                            break;
                        case "5":
                            button2.setText(letter);
                            button5.setEnabled(false);
                            break;
                        case "6":
                            button6.setText("X");
                            button6.setEnabled(false);
                            break;
                        case "7":
                            button7.setText("X");
                            button7.setEnabled(false);
                            break;
                        case "8":
                            button8.setText("X");
                            button8.setEnabled(false);
                            break;
                        case "9":
                            button9.setText(letter);
                            button9.setEnabled(false);
                            break;
                        default:
                            JOptionPane.showInputDialog("Sorry invalid number entered Please enter a number from 1 to 9 \n Press enter to procced ");
                            break;
                    }
    		    	}
     
    		    	//generating a number to be played by computer
              		  int ran = 1 + (int)(Math.random() * 9);
    		    	//else
    		    		if(count==2)
    		    		{
    		    			 if (ran==1)
    		        		{
                                                button1.setText("O");
    				            button1.setEnabled(false);
     
    		       			 }
    				         else
    				         	if(ran==2)
    				       	{
    				             button2.setText("O");
    				             button2.setEnabled(false);
    				        }
    				         else
    				         	if(ran==3)
    				       	{
    				             button3.setText("0");
    				             button3.setEnabled(false);
    				        }
    				         else
    				         	if(ran==4)
    				       	{
    				             button4.setText("0");
    				             button4.setEnabled(false);
    				        }
    				         else
    				         	if(ran==5)
    				       	{
    				            button5.setText("0");
    				            button5.setEnabled(false);
    				        }
    				         else
    				         	if(ran==6)
    				       	{
    				             button6.setText("O");
    				             button6.setEnabled(false);
    				        }
    				         else
    				         	if(ran==7)
    				       	{
    				             button7.setText("X");
    				             button7.setEnabled(false);
    				        }
    				         else
    				         	if(ran==8)
    				       	{
    				             button8.setText("X");
    				             button8.setEnabled(false);
    				        }
    				         else
    				         	if(ran==9)
    				       	{
    				             button9.setText(letter);
    				             button9.setEnabled(false);
    				    	}
     
        				}
    	}
    	}
    	 public static void main(String[] args)
        {
            new TicT();
        }
     
     
    }


  2. #2
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    Default Re: ERROR : "CLASS NAME IS ABSTRACT CANNOT BE INSTATIATED"

    Hi.
    Do you have knowledge about abstract classes?
    If not then this link shall help you Abstract Class, Abstraction, Abstract Class in Java, Abstract Method - Javatpoint.

    Thanks,
    Syed.

  3. #3
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    Default Re: ERROR : "CLASS NAME IS ABSTRACT CANNOT BE INSTATIATED"

    i get the picture now how should I modify it so that it does not mess up my project

  4. #4
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    Default Re: ERROR : "CLASS NAME IS ABSTRACT CANNOT BE INSTATIATED"

    Hello.
    Did you go through that link? Doesn't it give hint on how to fix your problem?

    Syed.

  5. #5
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    Default Re: ERROR : "CLASS NAME IS ABSTRACT CANNOT BE INSTATIATED"

    If you won't read his tutorials I'll sum it up.

    You can't instantiate an abstract class because of that precisely.. it is abstract.
    Therefore you can't run your class at all because its intent is to be inherited.

    Read Syed's link and post back

  6. #6
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    Default Re: ERROR : "CLASS NAME IS ABSTRACT CANNOT BE INSTATIATED"

    So you just decided to declare the class abstract even though you didn't understand what abstract classes were for?

    Can I ask, why?

    -summit45

  7. #7
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    Default Re: ERROR : "CLASS NAME IS ABSTRACT CANNOT BE INSTATIATED"

    You can't create instances of abstract classes. You can extend them into concrete classes and use their methods and fields. I think you can also use them anonymously (that is, if you had another method named "addTict" that took a TicT object as a parameter, you could do something like addTicT(new Tict()).

    --- Update ---

    Quote Originally Posted by summit45 View Post
    So you just decided to declare the class abstract even though you didn't understand what abstract classes were for?

    Can I ask, why?

    -summit45
    I'm guessing the original poster didn't actually write that code.

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