Thread: Matching Game Help

I am trying to make a matching game. So far I just have the screen set up to display the buttons.
My program builds fine, but when I run it I get this message and nothing pops up.


Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
-d32 use a 32-bit data model if available
-d64 use a 64-bit data model if available
-server to select the "server" VM
-hotspot is a synonym for the "server" VM [deprecated]
The default VM is server.

-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose:[class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -no-jre-restrict-search
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions with specified granularity
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions with specified granularity
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument
-splash:<imagepath>
show splash screen with specified image
See Java SE Documentation at a Glance for more details.


This is my code:

/**
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.*;
import javax.swing.*;
import static java.util.Collections.*;
 
public class MatchingGame extends JFrame implements ActionListener {
	private JButton exitButton, replayButton;
    private JButton[] gameButton = new JButton[36];
    private ImageIcon[] ImageArray;
 
    public MatchingGame() {
    	init();
        panel();
        setImages();
        setTitle("MathingGame");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setSize(750, 750);
        setVisible(true);	
    }
 
    public void init() {
        for (int i = 0; i < gameButton.length; i++) {
            gameButton[i] = new JButton();
            gameButton[i].addActionListener(this);
        }
        exitButton = new JButton("Exit");
        exitButton.addActionListener(this);
        replayButton = new JButton("Replay");
        replayButton.addActionListener(this);
    }
 
    public void panel() {
 
    	Panel gamePanel = new Panel();
    	gamePanel.setLayout(new GridLayout(6, 6));
 
    	for (int i = 0; i < gameButton.length; i++) {
        	gamePanel.add(gameButton[i]);
    	}
 
    	Panel buttonPanel = new Panel();
    	buttonPanel.add(replayButton);
    	buttonPanel.add(exitButton);
    	buttonPanel.setLayout(new GridLayout(1, 0));
 
    	add(gamePanel, BorderLayout.CENTER);
    	add(buttonPanel, BorderLayout.SOUTH);
 
    }
 
    public void setImages() {
    	for(int i=1;i<19;i++){
    		ImageArray[i] = new ImageIcon("Pictures/"+i+".jpg");
    		gameButton[i].setIcon(ImageArray[i]);
		}
 
    }
 
    public void actionPerformed(ActionEvent e) {
		if (exitButton == e.getSource()) {
		    System.exit(0);
		}
		if (replayButton == e.getSource()) {
 
		}
    }
 
    public static void main (String[] args){
    	new MatchingGame();
    }
 
}

Originally Posted by Norm

That looks the response the java command gives when it is executed without a classname.

How are you trying to execute the program?

I just press the run button in JCreator