1. Simple Java Gui Code
2. Basic Java Gui
3. Gui Code Java

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1. I'm still pretty new to Java, so I'm having some issues working out this slot machine program. After you run the program the first time and calculate the rewards (say, you bet $20 and win $40, so your new sum's $120), it's supposed to loop back around and prompt 'how much would you like to bet?'
2. Swing/AWT/SWT:: Slot Machine - GUI Exit Button Mar 13, 2014. I've spent ages trying to implement an exit button into this code. Its the start of a GUI for a slot machine, the actual machine code is in a separate class and I haven't linked them yet. My question is where/how would the exit button be added? I've tried and failed a lot of times.

Slot Machine Program Using Methods And Arrays

I am designing a program that generates 3 random numbers from 1-5 and if 2 match, the user wins $1. If 3 match, the user wins respectively:
All 1s - $5
2s - $10
3s - $25
4s - $50
5s - $100
I first used a loop to run until the user runs out of money or wishes to stop. Then I made 2 methods. 1 to generate the random numbers and 1 to see if the user won any money. I am storing the random numbers in an array called slotnumber.
This is what I have so far but I am getting compiling errors at while (cont 'y') {
import java.util.Scanner;
import java.util.Random;
public class SlotMachine
{
[Code]......

Swing/AWT/SWT :: Slot Machine - GUI Exit Button

I've spent ages trying to implement an exit button into this code. Its the start of a GUI for a slot machine, the actual machine code is in a separate class and I haven't linked them yet. My question is where/how would the exit button be added? I've tried and failed a lot of times....
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class SlotMachineGUI
{
public static void main (String[] args)
{
//create new jframe
JFrame frame = new JFrame ('Slot Machine');
[Code] .....

How To Fix Logic Error For Slot Machine Game

I'm trying to fix this logic error in my slot machine game where no matter what slot combo comes up, it says you have won $10 and proceeds to add that amount to the balance and subtract the bet amount to the balance, even though it is not a winning combo! I've been trying to solve that and when doing so, I commented out Slot1.randNum1 0, Slot2.randNum2 0, and Slot3.randNum3 0 and anything relating to see if that was the problem, and it seemed like it was, because after that, the logic error described above was gone, but in doing so, the loss/win counter didn't increment, nor did the program pick up on the winning combos. However, I do not know why commenting out anything relating to randNum 0 would cause that.
Here is the code for the processing (as you can see, some parts are commented in attempt to fix the logic error, but right now the code below is for the logic error that keeps on telling that the user has won):
public void askData ()
{
title ();
int betAmount;
while (true)
{
try
{
c.setCursor (3, 1);
[code]....

Methods And Arrays Slot Machine Program Won't Compile

Here are the errors I am getting:
SlotMachine.java:21: error: illegal start of expression
public static void getNums(int [] slots)
^
SlotMachine.java:21: error: illegal start of expression
public static void getNums(int [] slots)
[code]....
i keep fixing small things and cannot get it to compile. Below is the original code,
import java.util.Scanner;
import java.util.Random;
public class SlotMachine
{
public static void main (String args[]) {
int userMoney;
Scanner input = new Scanner(System.in);
System.out.print('How much money to start with?
[code]....

Slot Machine - How To Calculate Winnings And To Spin Again / Exit

Working with the winnings and how to spin again or exit.
import java.util.*;
class Wksht5Q1{
public static void main(String[] args){
Scanner in = new Scanner(System.in);//For user input
Random rand = new Random();//For number generator
//Variables for user input
[Code] ....

JavaFX :: Slot Machine In Netbeans - Scene / Stage

I want to create a slot machine in NetBeans, with JavaFX library (without using JavaFX Scene Builder) but i have some problems to create UI.
I created algorithm already but without visuals.
Now my code is:
public class BEST extends Application {
private ImageView var; //init imageview of images
public static void main(String[] args) {
launch(args);
[Code] ....
createbottom(); and creategr(); i wrote already (and my program creates grid pane of random images with double dimension array, random and imageview) and program runs, but i don t know how to keep track of credits balance,in the same time to create new random gridpane of images and to get rid of every gridpane.
Here is creategr();
private GridPane creategr(){
final GridPane creategr = new GridPane();
int[][] newarray=new int[3][3];
int w=100;
for(int i=0; i<3; i++){
for(int j=0; j<3;j++)
[Code] ....
Button 'SPIN' is created in createbottom();.

Slot Machine - Exception In Thread InputMismatchException (runtime Error)

For this program, I have to run a slot machine. It runs until right before the do while loop and then I receive the error: Exception in thread 'main' java.util.InputMismatch.Exception. Searching around, someone said it was a scanner error and adding a call keyboard.nextLine(); fixes the problem- however with that I receive the same error.
Code :
import java.util.Scanner;
import java.util.Random;
import java.io.*;
public class SlotMachineSimulation
{
public static void main(String[] args) throws IOException
{
int number;
[Code] .....

Networking :: Connecting To Remote Windows Machine From Local Machine Using SSH2

I have developed a code to connecting remote windows M/C from local M/C by using SSH2 (ganymed-ssh2-build209.jar) API. when I run the code its giving below error. Is there any other way to connect remote windows system using java code.
Exception.
java.io.IOException: There was a problem while talking to <host name>:22
at ch.ethz.ssh2.Connection.connect(Connection.java:642)
at ch.ethz.ssh2.Connection.connect(Connection.java:460)
at Connect.RemoteServer.ConnectWindowsServer.runCommand(ConnectWindowsServer.java:55)
at Connect.RemoteServer.ConnectWindowsServer.main(ConnectWindowsServer.java:27)
Caused by: java.net.ConnectException: Connection refused: connect
[Code] ....
JAVA Code
import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
public void setAuthenticationInfo(String hostname, String username,String password) {
this.host = hostname;
this.userid = username;
this.password = password;
this.recentCommand = ';
System.out.println('setting authentication info completed for host=' + host );
[Code] .....

Java Code To Access Windows Machine From Unix Machine

I have a requirement where I have to send a file from a local system to unix box(present on client side) using java code.I have developed a code that is successfully sending the file from local system to client side unix box (I am connecting to client side unix box using VPN) provided I run the code in my eclipse IDE present in local system. But when I am running the same code in the unix box it is throwing null pointer exception.Might be the unix system is not recognising the local system. Please find the code.
package abc;
import java.io.File;
import java.io.FileInputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.Properties;
import com.jcraft.jsch.Channel;
[Code] ....
Error on unix box which I am getting is :-
Inside sftpConnection method
llllllll
fffffffffffff
Connection Successfull
Channel Connection Succesfull
aaaaa
Inside findFile method
Exception in thread 'main' java.lang.NullPointerException
at abc.TranferFile.sftpConnection(TranferFile.java:58)
at abc.TranferFile.main(TranferFile.java:21)

How To Add Libraries To JCreator

I've been trying this for hours but it's not working. I'm trying to add the sea glass look and feel library to my project but I still get the error:
Exception in thread 'main' java.lang.NoClassDefFoundError: List (wrong name: list)
What should I do? I've added the library to 'project settings >Required Libraries' and did not forget to check the box. I've also imported the L&F so it can't be that.

Create A Calculator With JCreator

I have got a problem when coding a java program to create a calculator with JCreator. How to write codes for decimal point.
Decimal point should not be set to the text more than 1 time until an operator is pressed. How can I use a Boolean value to solve this problem.

How To Manage JFrame In JCreator

how to manage JFrame in JCreator .

Compiles But Won't Execute - JCreator

I was typing up this program and when I compile it, there aren't any errors, but it won't advance past the second conditional.
Here's the code:
import static java.lang.System.*;
import javax.swing.JOptionPane;
import java.util.*;
public class area51
{
public static void main(String args[])
[Code] ....
The first two answers are 41 and right.

How To Compile And Run Java Programs Using JDK And JCreator

How do I set the class path, the path, compile and run java programs using jdk and jcreator?

How To Make JCreator Output In Command Window

I set these up, but the command console comes up, I don't see the 'Hello World' in the window and it closes.
How can I get the output 'Hello World!' to appear in a 'cmd' window and stay there till i close it?

JCreator - Error In Java Library System

I search this source code in google about library system then i run this in my JCreator then that error appear . I think that problem is all about 'main'. where can i put that main ?

Find Slot Number In Array?

what I needed to know to complete the lesson, but now it just tells me what the output should be and I have to research the information on my own. anyways, here is my code from the previous lesson:
import java.util.Random;
import java.util.Scanner;
public class tnArray {
public static void main(String[] args) {
int [] array;
[code]....
Now I have to change it so that instead of counting the number of times a number will appear in the array, I must output which slot in the array the number is in.

JSF :: Passing Session To Different Machine

In my JSF application user starts on primary server where the session begins and then the user is redirected to a different server using sendRedirect. I want to pass some authentication token to the next server from primary server. I am trying to set session attribute as:
request.getSession().setAttribute('auth_token', '1');
And then send it to the next server as:
response.sendRedirect(encodedUrl);
But this attribute is not reaching the new server. I cannot pass this auth_token as request parameter as that wont be secure. So how to get some session data to new server?

ATM Machine - Action Listeners

My output is all over the place. I cancelled out the borderlayouts beneath each panel I created and it completely changed the output, and I'm not sure why. The first photo below, shows what it looked like with the layouts and the second shows the output without. I still don't understand why I don't see the digits 1-9.
Java Code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
public class Atm extends JFrame {
Atm(){
super('ATM');
//Create Panels For ATM
JPanel buttonPanel1 = new JPanel(); //To Contain Digits 1-9
[Code] ....
Why would setting the layout beneath each object change the layout so much? I stayed consistent in my use of BLayout and GLayout in the program.

What Is Java Virtual Machine

What is Java Virtual Machine (Java VM)?

Vending Machine - Different Files

keep getting an error when inventory is printed out. wont carry the money over. cant find out how to do it?
[import java.util.Scanner;
public class VMachine
{
Scanner input = new Scanner (System.in);
double candy;
double soda;
double dsoda;
double money;
[Code] ....

Create ActionListener For ATM Machine

I've scanned the book and a few other forums trying to find an answer to my particular question (or I simply didn't understand) with no luck. I want to create an ActionListener for my ATM machine, that will both receive the input numbers to check them against the passcode for a predefined user, but also add the typical ' * ' that we see when performing such an action.
1. I have created individual objects for each button, which I then used in the constructor 'perform' from class action. I'm not sure where to start in the method ActionPerformed.
2. How do I get the asterisks to appear in the JPasswordField each time a numeric button is pressed on the keypad?
Java Code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Atm extends JFrame {
Atm(){
super('ATM');
//Create Panels For ATM
JPanel buttonPanel1 = new JPanel(); //To Contain Digits 1-9
buttonPanel1.setLayout(new GridLayout(4,3));
[code]....

State Machine Compiler

I am working in software testing, specifically automatic test cases generation. Among the existing forms of test cases, my focus is on the test cases that are composed of sequences of events such as _.event1.event2 eventx()
However, the events can be classified into: sensitive and insensitive. The latter does not affect the system's states, and hence, it can be ignored; while the former affects the states. Anyhow, the sensitive events in the test cases may lead to states explosion and there is a need to prevent that. Therefore, some techniques suggest using one variable to present states and group all similar states together such as using len variable in circular queue. Relatively, the states can be represented by using specific drawings such FSM.
For example, the test cases for circular queue may look like:
add(0).remove().add(1).Front()
add(0).add(1).remove().Front()
which produce the following states:
len=1, rear=0, front=0 and dataQ[0]=0
len=0, rear=0, front=1 and dataQ={0}
len=1, rear=1, front=1 and dataQ[1]=1
len=1, rear=0, front=0 and dataQ[0]=0
len=2, rear=1, front=0 and dataQ[1]=1
len=1, rear=1, front=1 and dataQ={1,0}
As can be seen, every addition/deletion produces a new state. A state is composed of 4 variables: len, rear, front and dataQ. The 1st three variables are integers while the dataQ is an integer array. Nonetheless, the states produced by different test cases can be identical which wastes effort and time. So, there is a need to optimize these states. The search techniques were suggested where the problem can be represented as a search problem and the technique is applied. If we consider Len as a state, then we will have: len=0; 0QSize. However, this does not represent the state but it suits for classifying the states into groups.
In terms of states representation, State Machine/Map Compiler (SMC) was suggested as a modeling mechanism that takes the state machines (i.e. FSM) drawing and generates the code in any preferred language. In SMC, the FSM is represented in a specific syntax (state---transition----next state) and saved in a file (.sm). This file will be compiled by SMC to generate a context class which includes definitions of states, transitions and actions in FSM but still need to be triggered by another class. This class has to call the transitions that modifies the state.
We had created that class and implemented all the methods with their transitions. However, the FSM used was based on 1 variable only (i.e. len). Besides, we are still looking for the SMC results as they will be the input for any search technique to be applied. Supposedly, the states generated by SMC can be used directly in the search technique but this is still questionable.

ATM Machine - Inner Listener Class

Couple of problems here...
1. I am trying to use the getSource method in my inner class, in order to set the JPasswordField within an Inner Listener Class. This is a 4 integer password, setup by my for statement in the loop. I know what I want the program to do, but I don't know the correct language to use. I want the user to press one of the keys (0-9), that value be stored in JPassword (at least I think that is how it works) and for it to display the '*' in the Field---I want this to loop 4x. How do I use the getSource() to do this.
Also, I believe I need to use the set and get methods for the password entered into the JPassField, is that correct? The inner class is not recognizing my the object password that represents the JPasswordField.
2. In my second Inner Listener Class, clearButton, I set the event.getSource method to reset the JPasswordField to ' ', when the clear button is pressed. Again, the problem is that the inner class does not recognize password. Why is this the case, since it is still a part of the parent class Atm?
Java Code: import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Atm extends JFrame {
Atm(){
super('ATM');
int i = 0;
//Create Panels For ATM
JPanel buttonPanel1 = new JPanel(); //To Contain Digits 1-9
buttonPanel1.setLayout(new GridLayout(4, 3));
[code]...

Could Not Create The Java Virtual Machine

I keep getting this error:-
/opt/solr# java -v
Unrecognized option: -v
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

Topics in Part 1

• Getting to know JavaFX
• Creating and starting a JavaFX Project
• Using Scene Builder to design the user interface
• Basic application structure using the Model-View-Controller (MVC) pattern

Prerequisites

• Latest Java JDK 8 (includes JavaFX 8).
• Eclipse 4.4 or greater with e(fx)clipse plugin. The easiest way is to download the preconfigured distro from the e(fx)clipse website. As an alternative you can use an update site for your Eclipse installation.
• Scene Builder 8.0 (provided by Gluon because Oracle only ships it in source code form).

Eclipse Configurations

We need to tell Eclipse to use JDK 8 and also where it will find the Scene Builder:

1. Open the Eclipse Preferences and navigate to Java Installed JREs.

2. Click Add…, select Standard VM and choose the installation Directory of your JDK 8.

3. Remove the other JREs or JDKs so that the JDK 8 becomes the default.
   

4. Navigate to Java Compiler. Set the Compiler compliance level to 1.8.
   

5. Navigate to the JavaFX preferences. Specify the path to your Scene Builder executable.
   

Helpful Links

You might want to bookmark the following links:

• Java 8 API - JavaDoc for the standard Java classes
• JavaFX 8 API - JavaDoc for JavaFX classes
• ControlsFX API - JavaDoc for the ControlsFX project for additional JavaFX controls
• Oracle’s JavaFX Tutorials - Official JavaFX Tutorials by Oracle

Now, let’s get started!

Create a new JavaFX Project

In Eclipse (with e(fx)clipse installed) go to File New Other… and choose JavaFX Project.
Specify the Name of the project (e.g. AddressApp) and click Finish.

Remove the application package and its content if it was automatically created.

Create the Packages

Right from the start we will follow good software design principles. One very important principle is that of Model-View-Controller (MVC). According to this we divide our code into three units and create a package for each (Right-click on the src-folder, New… Package):

• ch.makery.address - contains most controller classes (=business logic)
• ch.makery.address.model - contains model classes
• ch.makery.address.view - contains views

Note: Our view package will also contain some controllers that are directly related to a single view. Let’s call them view-controllers.

Create the FXML Layout File

There are two ways to create the user interface. Either using an XML file or programming everything in Java. Looking around the internet you will encounter both. We will use XML (ending in .fxml) for most parts. I find it a cleaner way to keep the controller and view separated from each other. Further, we can use the graphical Scene Builder to edit our XML. That means we will not have to directly work with XML.

Right-click on the view package and create a new FXML Document called PersonOverview.

Design with Scene Builder

Right-click on PersonOverview.fxml and choose Open with Scene Builder. Now you should see the Scene Builder with just an AncherPane (visible under Hierarchy on the left).

(If Scene Builder does not open, go to Window Preferences JavaFX and set the correct path to your Scene Builder installation).

1. Select the Anchor Pane in your Hierarchy and adjust the size under Layout (right side):
   

2. Add a Split Pane (Horizontal Flow) by dragging it from the Library into the main area. Right-click the Split Pane in the Hierarchy view and select Fit to Parent.
   

3. Drag a TableView (under Controls) into the left side of the SplitPane. Select the TableView (not a Column) and set the following layout constraints to the TableView. Inside an AnchorPane you can always set anchors to the four borders (more information on Layouts).
   

4. Go to the menu Preview Show Preview in Window to see, whether it behaves right. Try resizing the window. The TableView should resize together with the window as it is anchored to the borders.

5. Change the column text (under Properties) to “First Name” and “Last Name”.
   

6. Select the TableView and choose constrained-resize for the Column Resize Policy (under Properties). This ensures that the colums will always take up all available space.
   

7. Add a Label on the right side with the text “Person Details” (hint: use the search to find the Label). Adjust it’s layout using anchors.
   

8. Add a GridPane on the right side, select it and adjust its layout using anchors (top, right and left).
   

9. Add the following labels to the cells.
   Note: To add a row to the GridPane select an existing row number (will turn yellow), right-click the row number and choose “Add Row”.
   

10. Add a ButtonBar at the bottom. Add three buttons to the bar. Now, set anchors (right and bottom) to the ButtonBar so it stays in the right place.
    

11. Now you should see something like the following. Use the Preview menu to test its resizing behaviour.
    

Create the Main Application

We need another FXML for our root layout which will contain a menu bar and wraps the just created PersonOverview.fxml.

1. Create another FXML Document inside the view package called RootLayout.fxml. This time, choose BorderPane as the root element.
   

2. Open the RootLayout.fxml in Scene Builder.

3. Resize the BorderPane with Pref Width set to 600 and Pref Height set to 400.
   

4. Add a MenuBar into the TOP Slot. We will not implement the menu functionality at the moment.
   

The JavaFX Main Class

Now, we need to create the main java class that starts up our application with the RootLayout.fxml and adds the PersonOverview.fxml in the center.

1. Right-click on your project and choose New Other… and choose JavaFX Main Class.
   

2. We’ll call the class MainApp and put it in the controller package ch.makery.address (note: this is the parent package of the view and model subpackages).
   

The generated MainApp.java class extends from Application and contains two methods. This is the basic structure that we need to start a JavaFX Application. The most important part for us is the start(Stage primaryStage) method. It is automatically called when the application is launched from within the main method.

As you see, the start(...) method receives a Stage as parameter. The following graphic illustrates the structure of every JavaFX application:

Image Source: http://www.oracle.com

It’s like a theater play: The Stage is the main container which is usually a Window with a border and the typical minimize, maximize and close buttons. Inside the Stage you add a Scene which can, of course, be switched out by another Scene. Inside the Scene the actual JavaFX nodes like AnchorPane, TextBox, etc. are added.

For more information on this turn to Working with the JavaFX Scene Graph.

Open MainApp.java and replace the code with the following:

The various comments should give you some hints about what’s going on.

Simple Java Gui Code

If you run the application now, you should see something like the screenshot at the beginning of this post.

Frequent Problems

If JavaFX can’t find the fxml file you specified, you might get the following error message:

java.lang.IllegalStateException: Location is not set.

To solve this issue double check if you didn’t misspell the name of your fxml files!

What’s Next?

Basic Java Gui

In Tutorial Part 2 we will add some data and functionality to our AddressApp.

Gui Code Java

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