Swing is the name for the GUI toolkit that is packaged with the standard Java SDK. (since 1.2)

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Connecting together multiple classes [on hold]

In my previous question I learned to divide one class into multiple classes. I divided them into a couple of classes, but it is not working! It just shows blank screen. Main : ...
6
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2answers
55 views

Reorganize a maze game from one large class into smaller classes

I'm new to Java and I really don't understand how to make more classes work like one. So if anybody could explain and help me divide my large code into smaller classes (like Player.java, Main.java, ...
8
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7answers
713 views

Too-high / too-low guessing game in Swing

I have created this program and it works fine. It's just that its too wonky and huge so I was wondering if anyone knew how I could shorten the program so I didn't have to put all of these into each ...
5
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1answer
53 views

Determine maximum window bounds

Preamble: the default frame positioning with Swing JFrames has always bothered me. Eventually I wrote some code to calculate my available desktop space, not ...
10
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3answers
1k views

Pokemon Type Evaluator

I thought I would apply what I learned to make something fun. Its purpose is to type check Pokemon, for anyone familiar with the series. It mostly works but I have two concerns: Sometimes you write ...
2
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0answers
28 views

Pausing a SwingWorker with a Timer

I made a SwingWorker which is fetching tweets using the twitter4j API. The twitter API will allow 180 queries every 15 minutes, and then throw an exception with ...
2
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1answer
80 views

Opening contents of a file using Swing and SwingWorker class

I want to open a file contents using swing. For this I used the SwingWorker class. This application took more time (more than a minute) to load a large file ...
1
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1answer
84 views

Breaking memory game code into MVC form

I am currently coding a memory game whereby upon the game starts with 14 cards displayed faced down. The player will start by clicking on 2 cards. The cards will be revealed. If both of the card ...
4
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1answer
54 views

Periodically checking for internet connection

I have a SwingWorker which checks periodically for an internet connection and updates a jLabel accordingly. ...
7
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3answers
121 views

Very Basic Java Piano

I've been reading "Head First Java" and some of the early projects surround basic swing and basic MIDI. So I've put the two together and written a basic "Synthesiser"/"Piano" using what I have ...
3
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1answer
62 views

Implementation of MVC pattern with paintComponent method

Could someone review my code, with respect to OOP, clean code and MVC pattern? Main app: ...
8
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1answer
99 views

Separating Logic from GUI

I am new to Java's Swing and built a test client that connects to a server. I was wondering if my use of a Controller class as a link between the classes ...
4
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1answer
87 views

Inefficient Stopwatch - revised

This is my revised code of Stopwatch: ...
5
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1answer
116 views

Inefficient Stopwatch

I have just finished a simple GUI stopwatch, but some of its code looks like it needs replacing. This is the code: Clock class (extends Thread): ...
2
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1answer
90 views

Simple Operations Calculator

I'm practicing Swing effects. Everything works but for some reason I get a ton of error messages in the command prompt when the fields are empty, despite my attempt to add some exception handling ...
6
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2answers
116 views

Basic Calculator using Java Swing and AWT

I created a basic desktop calculator using Java. Does anyone have any suggestions as far as coding best practices, readability issues, or just generic coding mistakes I might have missed? Any ...
6
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1answer
55 views

Rotating background using Swing: performance issues

In a jPanel, I'm displaying a 1203x1203 background that I rotate every 30ms. Problem is, Swing is known to be a slow library, and I assume rotating a huge picture at a quick rate would be quite ...
8
votes
2answers
434 views

Swing calculator - first GUI program

I've recently made a calculator using Java and Swing. I'm okay with the results but I'm curious what are the major flaws I've made (assuming there are, because it is my first program making GUI). I ...
1
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0answers
41 views

Guessing game - user has 6 attempts, after 6th attempt it saves the record to a text file [closed]

I have got all my code working but I am unsure of how I am meant to code in the high score text file. I have been teaching myself and am not sure of what variables or instances to include for the ...
5
votes
3answers
317 views

Small notepad editor

I decided on making a small notepad editor in Java using Swing and I think it functions pretty well. Unfortunately, my skills in making my project tidy and organized has abandoned me; it looks like ...
0
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2answers
67 views

Simple GUI using tabs to separate application windows

I'm designing a simple GUI using tabs to separate each 'window' of the application. There are 3 main tabs, each with 2 sub-tabs. In one class I create the entire hierarchy of panes and panels: ...
4
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1answer
562 views

MouseListener Lag in Piano Tiles game

I was attempting to write my own simple version of the Piano Tiles game app in Java just as a fun exercise. GameLogic.java ...
9
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1answer
175 views

Organizing code in small Mario game

I have a little Mario game I started working on realize that it's format is very messy, can anyone critique my code on how to make it better, faster, neater, easier to access. frame.java ...
7
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3answers
360 views

2048 game clone in Java

I made a 2048 game clone in Java for training, and I am trying to make it more efficient. The problem I found is the paintComponent() method always resets all the ...
6
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1answer
155 views

Simple stop watch

I'd like my code to be solid and good. That's why I want someone a little more experienced to give me some feedback so I can improve. Here is the code for a simple stop watch that I created. I feel ...
1
vote
1answer
110 views

MVC Layout - Which way to add listeners is better?

So I'm doing a basic MVC layout for a pretty basic game that I am making. The game requires the user to move up/down/left/right via buttons on the GUI. Since I'm using an MVC layout and my buttons are ...
4
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1answer
119 views

Winning Loop Connect 4

I am writing a fully functional single player Connect 4 game. I am working on the second player and the while loop that tells the player who won. GUI ...
7
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1answer
92 views

Interacting with GUI class and Main class

Usually when I make mock-up programs (like this one), I look for things I can improve on in case the situation happens again. Today I thought I'd brush up on basic OOP (I understand the concept of ...
6
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4answers
655 views

“Guess my number” game in Java Swing

Also posted at rgcsm.info/blog ...
4
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2answers
65 views

Executing a file through a swing button

I am making a Swing application for light local database management and I have the button Run XAMPP. When that button is pressed this code is executed: ...
9
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1answer
70 views

PanelScrollable - a reusable class for rendering a changeable number of panels

This class (PanelScrollable) is part of my view package, in an MVP designed Java Swing system. I am not using any MVP ...
10
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1answer
3k views

Basic Calculator in Java with Swing

I used a standard calculator design from Java. I wanted to expand it so I created a class to create buttons for different operations, like +, ...
4
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2answers
67 views

Did I properly encapsulate this package?

My goal is to make File_Path_Handler constructor the only thing a user can access. Oh, is it too coupled? but the main question is: is File_Path_Handler the only accessible part of this package? ...
4
votes
2answers
119 views

How many squares can you see?

With a positive outlook, I posted this challenge at Programming Puzzles & Code Golf. I tried to come up with my own solution to the challenge which is as follows: The output is displayed (not ...
4
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1answer
183 views

Correctly implementing the Swing TreeModel

Ideally the Code Review would target the correctness of the approach implementing the Swing TreeModel. In particular, is the structural separation[1], event message passing, threading[2], object ...
10
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2answers
71 views

Component-oriented implementation of JList

One of the main problems I have with JList is that no component is actually added to it. This means that things like ...
6
votes
3answers
102 views

Reducing repetition and utlizing EDT

I am working on the largest Java program I have undertaken to date and feel uncertain in my current code practices. I think that I state and repeat things that don't need to be which can become a ...
4
votes
2answers
95 views

Long Thread & EDT

I’m trying to make a simple gui app that starts a “long” process that can be started and stopped. The process generates random numbers and displays them in a JList. As numbers are being displayed ...
7
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1answer
142 views

Card layout in Java

I have a JPanel (mainPanel) with CardLayout which contains 4 JPanels (childPanel). Each childPanel contains: a JPopupMenu ...
7
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1answer
821 views

Drawing a triangle and some concentric circles

For class, I had to use Java to draw a triangle and some concentric circles. Here's my code (questions follow): ...
14
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1answer
148 views

Follow-up to tool for posting CodeReview questions

Description This is a follow-up question to Tool for creating CR questions. Things that has changed include: Removed replacing four spaces with one tab, all tabs and all spaces in the code itself ...
21
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2answers
268 views

Tool for creating CR questions

To download the tool and for usage instructions, see the follow up to this question Description I have realized that there's a whole bunch of code I want to have reviewed, but copying file by ...
7
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1answer
639 views

Java Calculator

I tried to make a calculator in Java and have added some stuff. I'm a beginner and have learned yesterday how to make buttons. ...
0
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2answers
78 views

A whole bunch of JButtons

Please review this code. ...
6
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2answers
1k views

Java GUI code with Swing Timer

I have the following questions for the below code: Is there a simpler implementation of an on-screen counter? I made CountTimer inner class since it's tightly ...
5
votes
1answer
284 views

A Program that Finds Empty Folders

I wrote a program that finds empty folders and subfolders in a directory. It's the first program I've ever written in Java, and I'd like some critique. I feel like I'm not utilizing classes in a very ...
1
vote
2answers
149 views

Shortening code to create a JFrame

I'm new to Java and have just started making JFrames. I wrote a program for a game project I'm working on and would like help on where I can improve. I'm not new to ...
5
votes
2answers
357 views

Splitting the GUI into smaller classes

I am currently working on a course project and have been assigned to write a GUI. I've written it and it's about 2000 lines of code. It will be bigger when I add the SQL codes and new panels. So, ...
5
votes
1answer
425 views

GUI design in Java Swing

I am developing a GUI using Swing, but before my project gets too complex. I would like to have a good design structure. I have a few ideas and will use a simple example to illustrate. Some feedback ...
2
votes
1answer
84 views

Create GUI components with states

I am asking about the right way to make a component that holds some state. This includes a Jbutton that saves a color in it, or a list item that saves a certain object. So when those GUI components ...