Program to run as Applet & Application - need fresh eye's simple mistake somewhere

**iZigZag** · May 8th, 2012, 03:04 PM

Basically this is a rock paper scissors game in a simple gui. The program works in applet form, but when I tried this method to run as an application, nothing happened.

This is the applet (below is my method to run as an application.)

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Random;
import javax.swing.JApplet;
 
 
/** rock paper scissors class */
public class JRockPaperScissors extends JApplet{
      	// Variables declaration
 
 
      private JLabel titleLbl;
      private JLabel selectionLbl;
   	private JLabel resultsLbl;
   	private JTextArea resultTextArea;
   	private JButton rockBn;
   	private JButton paperBn;
   	private JButton scissorBn;
   	private Container contentPane;
      private int cpu = 0;
      private int wins = 0;
      private int loses = 0;
      private int ties = 0;
      private final int CHOICE_MAX = 3;
      private final int ROCK = 0;
      private final int PAPER = 1;
      private final int SCISSORS = 2;
      private Random rand = new Random();
 
	public JRockPaperScissors(){
  	initializeComponent();
	}
        /** initializing componets */
	private void initializeComponent()
	{
		titleLbl = new JLabel();
		selectionLbl = new JLabel();
		resultsLbl = new JLabel();
		resultTextArea = new JTextArea();
		rockBn = new JButton();
		paperBn = new JButton();
		scissorBn = new JButton();
		contentPane = getContentPane();
 
		//
		// titleLbl
		//
		titleLbl.setText("Rock, Paper, Scissors");
                titleLbl.setFont(new Font("Garrmond", Font.BOLD, 30));
		//
		// selectionLbl
		//
		selectionLbl.setText("Choose one");
                selectionLbl.setFont(new Font("Arial",Font.BOLD,14));
		//
		// resultsLbl
		//
		resultsLbl.setText("*****Results*****");
                selectionLbl.setFont(new Font("Arial",Font.BOLD,14));
		//
		// resultTextArea
		//
 
 
 
		//
		// rockBn
		//
		rockBn.setText("Rock");
		rockBn.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e)
			{
				rockBn_actionPerformed(e);
			}
 
		});
		//
		// paperBn
		//
		paperBn.setText("Paper");
		paperBn.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e)
			{
				paperBn_actionPerformed(e);
			}
 
		});
		//
		// scissorBn
		//
		scissorBn.setText("Scissors");               
		scissorBn.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e)
			{
				scissorBn_actionPerformed(e);
			}
 
		});
		//
		// contentPane
		//
		contentPane.setLayout(null);
		addComponent(contentPane, titleLbl, 5,9,370,47);
		addComponent(contentPane, selectionLbl, 9,54,150,35);
		addComponent(contentPane, resultsLbl, 9,93,144,38);
		addComponent(contentPane, resultTextArea, 5,132,398,111);
		addComponent(contentPane, rockBn, 162,58,78,31);
		addComponent(contentPane, paperBn, 247,58,81,31);
		addComponent(contentPane, scissorBn, 334,58,87,31);
		contentPane.setSize(new Dimension(435, 290));
		//
		// JRockPaperScissors
		//		
 
		setSize(435, 290);
		setVisible(true);
	}
 
	/** Add Component Without a Layout Manager (Absolute Positioning) */
	private void addComponent(Container container,Component c,int x,int y,int width,int height)
	{
		c.setBounds(x,y,width,height);
		container.add(c);
	}
 
	/** action event methods */
	private void rockBn_actionPerformed(ActionEvent e)
	{
            //play the game choosing rock
            play(ROCK);
	}
 
	private void paperBn_actionPerformed(ActionEvent e)
	{
            //play the game choosing paper
            play(PAPER);
	}
 
	private void scissorBn_actionPerformed(ActionEvent e)
	{
            //play the game choosing scissors
            play(SCISSORS);
	}
        //method to play the game
        private void play(int pick){
             String resultStr = "";                   
             //random computer choice
             cpu = rand.nextInt(CHOICE_MAX);
             //nested if statments to determine winner loser or tie
             if(pick == cpu){
                 ties++;
                 resultStr = "You picked " + selection(pick) + " ---- Computer picked " + selection(cpu);
                 resultStr += "\nWinner: Tie";
                 resultStr += "\nYou: " + Integer.toString(wins) + "  " + "Computer: " + Integer.toString(loses) + " Ties: " + Integer.toString(ties);
                 resultTextArea.setText(resultStr);
             }
             else if( (pick == ROCK) && (cpu == SCISSORS) ){
                 wins++;
                 resultStr = "You picked " + selection(pick) + " ---- Computer picked " + selection(cpu);
                 resultStr += "\nWinner: You";
                 resultStr += "\nYou: " + Integer.toString(wins) + "  " + "Computer: " + Integer.toString(loses) + " Ties: " + Integer.toString(ties);
                 resultTextArea.setText(resultStr);
             }
             else if( (pick == PAPER) && (cpu == ROCK) ){
                 wins++;
                 resultStr = "You picked " + selection(pick) + " ---- Computer picked " + selection(cpu);
                 resultStr += "\nWinner: You";
                 resultStr += "\nYou: " + Integer.toString(wins) + "  " + "Computer: " + Integer.toString(loses) + " Ties: " + Integer.toString(ties);
                 resultTextArea.setText(resultStr);                 
             }
             else if( (pick == SCISSORS) && (cpu == PAPER) ){
                 wins++;
                 resultStr = "You picked " + selection(pick) + " ---- Computer picked " + selection(cpu);
                 resultStr += "\nWinner: You";
                 resultStr += "\nYou: " + Integer.toString(wins) + "  " + "Computer: " + Integer.toString(loses) + " Ties: " + Integer.toString(ties);
                 resultTextArea.setText(resultStr);
             }
             else{
                 loses++;
                 resultStr = "You picked " + selection(pick) + " ---- Computer picked " + selection(cpu);
                 resultStr += "\nWinner: Computer";
                 resultStr += "\nYou: " + Integer.toString(wins) + "  " + "Computer: " + Integer.toString(loses) + " Ties: " + Integer.toString(ties);
                 resultTextArea.setText(resultStr);                 
             }
 
        }
            //function returns paper rock or scissors as a string
             public String selection(int choice){
                 String tempStr;
                 switch(choice){
                   case 0:
                         tempStr = "rock";
                         break;
                   case 1:
                         tempStr = "paper";
                         break;
                   case 2:
                         tempStr = "scissors";
                         break;
                   default:
                         tempStr = "invalid";
                  }
                  return tempStr;
             }
 
}

I thought in theory, this would work to run it as an application.

public class Game{
	public static void main(String[] args)
	{
		JRockPaperScissors test = new JRockPaperScissors;
	}
}

I am so stumped on what I did wrong...

**aussiemcgr** · May 8th, 2012, 03:09 PM

You do need a main to run an application. In your main, you left out the parentheses:
JRockPaperScissors test = new JRockPaperScissors();

Also, you need to take out extends JApplet and replace it with extends JFrame (or whatever) and call the Super Constructor.

**iZigZag** · May 8th, 2012, 03:15 PM

Thank you so much!! I knew i needed fresh eyes on this. I had one question though for future reference. Now that everything runs correct, why does it hang for a bit? Or how can I figure that part out?

**aussiemcgr** · May 8th, 2012, 03:31 PM

What do you mean by "hangs for a bit"? Does it just take some time to load, or does it stop responding for a few seconds and then comes back to life? If it is just taking its time, it could be your memory, or it could just be loading in the libraries and all of the overhead really slowly. If it stops responding, then we may have a threading problem.

**iZigZag** · May 8th, 2012, 03:32 PM

I think it is because i am getting errors when trying to use

super(initializeComponent);

right before

public JRockPaperScissors(){
  	initializeComponent();
	}

**aussiemcgr** · May 8th, 2012, 03:36 PM

When you mention you are getting an error, it helps to tell us what kind of error. To call the JFrame Super Constructor, you can just say:

public JRockPaperScissors(){
super();
initializeComponent();
}

**iZigZag** · May 8th, 2012, 03:39 PM

java.lang.ClassCastException: JRockPaperScissors cannot be cast to java.applet.Applet
	at sun.applet.AppletPanel.createApplet(AppletPanel.java:785)
	at sun.applet.AppletPanel.runLoader(AppletPanel.java:714)
	at sun.applet.AppletPanel.run(AppletPanel.java:368)
	at java.lang.Thread.run(Thread.java:662)

This is the error I get in debugging. I think this is the cause of the hanging.

**iZigZag** · May 8th, 2012, 04:02 PM

This error I am getting, is it because JRockPaperScissors is not defined??

**aussiemcgr** · May 8th, 2012, 04:12 PM

No, it still thinks its a JApplet. What line is the error being thrown from?

**iZigZag** · May 8th, 2012, 04:39 PM

java.lang.ClassCastException: JRockPaperScissors cannot be cast to java.applet.Applet
	at sun.applet.AppletPanel.createApplet(AppletPanel.java:785)
	at sun.applet.AppletPanel.runLoader(AppletPanel.java:714)
	at sun.applet.AppletPanel.run(AppletPanel.java:368)
	at java.lang.Thread.run(Thread.java:662)

This is the error, and it seems like when it reads the JRockPaperScissors(). It does not error in complie, but it errors when you run as applet in debug.

**aussiemcgr** · May 8th, 2012, 04:43 PM

You can't run it as an applet. You have to run it as an application.

**iZigZag** · May 8th, 2012, 04:49 PM

OHHHHHHHHHHHHHH!!!! Omg... I have been looking at this way to long....

**Norm** · May 8th, 2012, 05:22 PM

A better way might be to move all the logic to a class that extends JPanel and then add an instance of the class to a class that extends JApplet or JFrame for the different ways to execute it.

Thread: Program to run as Applet & Application - need fresh eye's simple mistake somewhere

LinkBack

Thread Tools

Display

Program to run as Applet & Application - need fresh eye's simple mistake somewhere

Related threads:

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

The Following User Says Thank You to aussiemcgr For This Useful Post:

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Re: Program to run as Applet & Application - need fresh eye's simple mistake somewher

Similar Threads

Fresh Meat

how come this program only loops twice? wheres my mistake?

please any one help in this application ,this simple application can you send message

[SOLVED] Help with simple Applet code

New to Java I need help with a simple mistake

Tags for this Thread