What happens in the MinOfThree program if two or more of the values are equal? The program still prints the lowest value. Because only less than comparisons are made, the comparison of two equal values produces a false result. If two values are equal, and lower than the third value, then one of the two lower but equal values is printed. If all three values are equal, then this value is printed. Which “version” of the equal value is irrelevant.If exactly two of the values are equal, does it matter whether the equal values are lower or higher than the third? The correct result is determined in either case. If the two equal values are lower than the third, then one of the two lower but equal values is printed. If the two equal values are higher than the third, then the third value is printed.2. What is wrong with the following code fragment? Rewrite it so that it produces correct
A couple of years ago, when I was learning Java programming, I thought of testing myself and my programming skills by writing a game in Java. Now, I'm not going to call it 'game programming', since game programming is way more than what I did. In fact, what I did was just a test for me. So I decided to write a game I was playing on my old Nokia E50 phone, a Slot Game.
If you would rather play 1000 different slot machines, move the declaration of a new slot machine into the for loop. This will create 1000 different instances of the slot machine class, rather than the below implementation where a single instance of a slot machine is created which is then played 1000 times. An important distinction. It's easier to figure out tough problems faster using Chegg Study. Unlike static PDF Starting Out with Java solution manuals or printed answer keys, our experts show you how to solve each problem step-by-step. No need to wait for office hours or assignments to be graded to find out where you took a wrong turn. 1: Turn your computer off. Write down on paper, without using any computer‑specific words, what you want the game or machine to do. 2: Don't write any GUI code until you have the game working at the command line. The game should work without a GUI. Is this the sort of machine you are trying to emulate?
This slot game I was playing on my phone was really simple. It had only 3 slots with different items in each. You had to push the Spin button in order to spin the slots, and you would win a small amount of coins if two or three slots were alike. Of course, 3 slots were better than 2. It is not really hard to make a game like this, but for a beginner it is good to start with. As I remember, this was probably the first program that I could tell others: “Look at what I just did!”
So I started working on it (I remember using NetBeans at that time), firstly as console-only, and then using GUI. The first thing I did, was deciding what kind of images (actually their names, not the images themselves) I would use. I wrote this line of code:
I also decided what would be the amount of “money” that the user would win if he matched two or three symbols:
After that, I went on writing the code that was suposed to randomly choose one of the elements in the symbols array. This could be done by using the Math.random() method, or by calling the nextInt() method at a Random instance, or by the wrong way I used to do at the beginning:
Of course, I soon switched to calling Math.random(), and in order to get a number that I could use as an index for my array, I wrote this block of code:
So the variable choice was the random index that I could use to get a random item from the array (keep in mind that Math.random() returns a double between 0.0 and 1.0) Atlantis casino online video poker.
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So after choosing 3 random items, I just printed them out at the console, saying whether there were none, two or three matches, and calculating the amount of money won, if there was any, with the given coefficient. Best rated casino games online. It was a good start; I only had to think of the UI, and I suck at UI design. But for this one, all that I needed was a really simple design which I managed to code as I was planning.
For the items to show at slots, I just googled them and found 12 of them in a single sprite. I downloaded the sprite and started my old photo editing software which sometimes can really be magical; Microsoft Paint! I started cropping images from the sprite, paying attention to their dimensions that should be the same, 122px by 114px. Why these magical values? Just because!
What was left to do, was the UI. I could use the really-helpful drag-and-drop UI builder that ships with NetBeans, but I wanted to do it myself. I had a really hard time figuring out which kind of layout to use, since the only one I really knew was GridLayout. Anyway beside that, I managed to use FlowLayout and BorderLayout. There is a difference between them, but I’m not really capable of pointing that out, so you can check the online JavaDoc for them.
I managed to build the game, and started to play it. I figured out that the coefficients for multiplying the bet were too damn high, but I didn’t care as long as I knew that the game worked.
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My bad practices
As you can see, the source code of this simple game is in only one file. This is something that I don’t like to do anymore. A better way to do it is by making the code as modular as it can be. By building small modular elements, dividing the UI from the logic of the application, you help yourself during the testing and debugging phase. So the first thing that I would like to change, is dividing the whole class Slots extends JFrame from the class that calls it.
This is done by firstly creating a file called Slots.java that will contain only the code for the UI. Then, creating an ActionListener that will listen to different button clicks (there are 5 different buttons). Finally, creating a class called App.java that will only create a Slots instance and make it run.
Starting Out With Java 3rd Edition Chapter 4 Slot Machine Machines
Basically, the App.java would look like this:
Liger loot slot machine. As I remember, SwingUtilities.invokeLater() is used to divide the UI thread from other threads, so if any UI changes are needed, they won’t stall the application.
The Listener class, which might be called something like SlotButtonListener, might be something like this:
And finally, in the Slots class there would be only the code for defining the UI of the game. All the buttons would have SlotButtonListener as action listener.
Anyone who wants to change the code following these advices is free to do it. You can fork it anytime you want.
Do you have any Java programming advice for me? Feel free to comment below