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Thread: random card display problem

  1. #1
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    Default random card display problem

    hey guys im trying to get my code to display 3 random cards from my images folder ( the cards are labeled 1.png to 54.png). Im confused how i would get my program to read and display my cards.
    import javax.swing.*;
    import java.awt.*;
    import java.util.*;
    public class DisplayCard extends JFrame {
    	String[] images;
    	for (int i = 1; i < 0 && i >=54;i++)
    	{
    	images[i] = i+".png";
    	}
     
    	Random rn = new Random();
    	int maximum = 54;
    	int minimum = 1;
    	int range = maximum - minimum + 1;
    	int randomNum =  rn.nextInt(range) + minimum;
     
      protected ImageIcon usIcon = new ImageIcon(images[randomNum]);
      protected ImageIcon myIcon = new ImageIcon(images[randomNum]);
      protected ImageIcon frIcon = new ImageIcon(images[randomNum]);
      protected ImageIcon ukIcon = new ImageIcon(images[randomNum]);
     
     
      public DisplayCard() {
        setLayout(new GridLayout(1, 4, 5, 5));
        add(new JLabel(usIcon));
        add(new JLabel(myIcon));
        add(new JButton(frIcon));
        add(new JButton(ukIcon));
      }
     
      /** Main method */
      public static void main(String[] args) {
    	DisplayCard frame = new DisplayCard();
        frame.setTitle("TestImageIcon");
        frame.setSize(500, 125);
        frame.setLocationRelativeTo(null); // Center the frame
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
      }
    }
    im confused it is giving me an error at ukicon = new imageIcon... basically its telling me to put a } after my semicolon.
    here is the error message
    Exception in thread "main" java.lang.Error: Unresolved compilation problem:

    at DisplayCard.main(DisplayCard.java:32)
    Appreciate the help guys.


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: random card display problem

    There may be statements in the code that should be inside of a method.

    A full error message from the javac compiler could better explain what the problem is.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: random card display problem

    Quote Originally Posted by Norm View Post
    There may be statements in the code that should be inside of a method.

    A full error message from the javac compiler could better explain what the problem is.
    I revised the code.Now i have everything finished but I can't get my actionlistener to randomize my cards again when I click my jbutton.
    import javax.swing.*;
    import java.awt.*;
    import java.awt.event.*;
    import java.util.*;
    public class DisplayCard extends JFrame {
    	//generate random numbers
    Random generator = new Random();
    int i = 54 - generator.nextInt(54);
    Random generator2 = new Random();
    int p = 54 - generator.nextInt(54);
    Random generator3 = new Random();
    int t = 54 - generator.nextInt(54);
    //defines images and button
    protected ImageIcon card1 = new ImageIcon("C:/Users/bearcat/Desktop/computer science/book/image/card/"+i+".png");
    protected ImageIcon card2 = new ImageIcon("C:/Users/bearcat/Desktop/computer science/book/image/card/"+p+".png");
    protected ImageIcon card3 = new ImageIcon("C:/Users/bearcat/Desktop/computer science/book/image/card/"+t+".png");
    JButton d= new JButton("Display Cards");
     
    //displays 3 cards and button
      public DisplayCard() {
        setLayout(new GridLayout(1, 4, 5, 5));
        add(new JLabel(card1));
        add(new JLabel(card2));
        add(new JLabel(card3));
        add(d);
      }
     
    public  void Button() {
    	 setSize(200,200);
    	   JButton startButton = new JButton("Start");
     
    	   add(startButton);
    	   startButton.addActionListener(new startButtonListener());
    	   setDefaultCloseOperation(EXIT_ON_CLOSE);
    	   setVisible(true);
    }
    private class startButtonListener implements ActionListener
    {
    	public void actionPerformed(ActionEvent e)
    	{
     
    	}
     
    }
     
      /** Main method */
      public static void main(String[] args) {
    	//calls method sets frame size, title
    	DisplayCard frame = new DisplayCard();
        frame.setTitle("12-9");
        frame.setSize(500, 125);
        frame.setLocationRelativeTo(null); // Center the frame
        //close and show frame
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
     
      }
    }

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: random card display problem

    I can't get my actionlistener to randomize my cards again when I click my jbutton.
    Where is the code that is supposed to do that?
    If you don't understand my answer, don't ignore it, ask a question.

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