EDUCBA

Home Software Development Software Development Tutorials Kotlin Tutorial Kotlin GUI

Kotlin GUI

Kotlin GUI

Introduction to Kotlin GUI

Kotlin GUI contains a small standard library, so we can use the same code for java script, JVM, and native support. Most of the functionality we are using in kotlin GUI comes from the existing java or java script libraries. Kotlin is wrapping all the libraries which were written in kotlin scratch. It can find the library framework which we are using in kotlin GUI.

Key Takeaways

  • Jmenu in GUI is used to implement the menu, which contains the popup window for menu items, which was used to display when the user selects an item from the menu bar.
  • We can create an application window by using Jframe. Also, we can use jbutton, jlabel in kotlin GUI.

What is Kotlin GUI?

The swing and AWT are not different GUI toolkits the swing is implemented onto the top of AWT. The native widgets which were implemented into the java which was not relevant and did not constitute the toolkit that was separate. Kotlin GUI is not the obsolete GUI tool it is the toolkit of the JRE. Using swing, we are creating the GUI applications in kotlin. Swing is the principal GUI toolkit for the programming language of java and kotlin. It contains the part of the JFC which provides API for the programmer’s graphical user interface.

Start Your Free Software Development Course

Web development, programming languages, Software testing & others

Kotlin GUI Application

The below application shows GUI as follows. At the time of creating the GUI application first, we are creating the project name as kotlin_GUI.

Below steps shows how to create the GUI application as follows:

1. In the first step, we create the project name as Kotlin_GUI using the Intellij idea. We are providing the below parameter while creating the kotlin project as follows. Also, we are adding sample code.

Name – kotlin_GUI
location – \Documents
Language – Kotlin
Build system – Intellij
Jdk – Java version 11
Project – New project

Kotlin GUI 1

2. After creating the new project template in this step, we check the structure of the newly created project as follows.

checking the project structure of newly created project

3. After creating the project structure in the below example, we are displaying the simple window on the screen. After running the below code, it will be open below sample GUI as follows.

Code:

class simple (app_title: String) : Jframe () {
   init {
   createUI (app_title)
   }
   private fun createUI (app_title: String) {
   setTitle (app_title)
   defaultCloseOperation = JFrame.EXIT_ON_CLOSE
   setSize (350, 250)
   setLocationRelativeTo(null)
   }
}
  private fun createAndShowGUI () {
  val gui = KotlinGUIEx ("Simple")
gui.isVisible = true
}
fun main() {
  EventQueue.invokeLater (::createAndShowGUI)
}

Output:

we are displaying the simple window on screen

Kotlin GUI 4

4. After creating the sample GUI in this step, we create the class for the menu option. Below example of implementing the GUI of the menu items as follows.

Code:

class Menu (app_title: String) : JFrame() {
   init {
   createUI (app_title)
   }
   private fun createUI (app_title: String) {
   setTitle (app_title)
   createMenuBar ()
   defaultCloseOperation = JFrame.EXIT_ON_CLOSE
   setSize (350, 250)
   setLocationRelativeTo(null)
   }
   private fun createMenuBar () {
   val menu_gui = JMenuBar ()
   val icon = ImageIcon ("\Documents\menu.png")
   val menu = Jmenu ("App File")
   menu.mnemonic = KeyEvent.VK_F
   val kotlinmenu = JMenuItem ("Exit", icon)
   kotlinmenu.mnemonic = KeyEvent.VK_E
   kotlinmenu.toolTipText = "Exit"
   kotlinmenu.addActionListener { _: ActionEvent -> System.exit(0) }
   file.add (eMenuItem)
   menu_gui.add (file)
   jMenuBar = menu_gui
   }
}
private fun createAndShowGUI() {
  val kotlin = KotlinSwingSimpleMenuExEx ("Simple menu")
  kotlin.isVisible = true
}
fun main() {
  EventQueue.invokeLater(::createAndShowGUI)
}

Output:

we are creating the class for the menu option

simple menu

Top Kotlin GUI Project

Below are the top GUI projects as follows. This project uses GUI at the time of implementing the project.

  • Compose-jb – This gui project is multiplatform and contains the modern framework for kotlin, which makes a beautiful and user-performance interface which was easy to manage by users. This GUI project will mention the GUI framework.
  • Jclasslib – This is the byte code editor project which was designed using GUI. Jclasslib is the byte code editor tool which was visualizing all the aspects of the java class, which was compiled and contains the byte code. Jclasslib project is very important for the byte code editor.
  • Appwrite – The firebase of open source introduces the support of IOS. Appwrite is an open source backend server that helps us to build a native application of IOS faster than API in real time for authenticating file storage, database, and the cloud function. Appwrite is a very useful and important project for GUI.
  • Kotlin libui – This project contains the portable GUI library defined for GUI. It is very useful while developing the GUI application into the kotlin. We are defining this project as GUI.
  • Imgui – This project contains the boat-free immediate mode of the graphical user interface for the java virtual machines with minimal dependencies. This project is basically used to develop the image-based application or project.
  • Decompiler – This contains the GUI of the java decompiler. This project is basically used to decompile the java code. It is providing a good GUI to define the GUI application. Decompiler project is very useful in GUI.
  • Installation – It will create the cross-platform installer of the java applications by using the graphical user interface. This project of GUI will contain the installer of the cross-platform.
  • SonarLint – It clean code will begin with the sonar lint of our IDE. By using this project, we can discover issues early. Sonar lint is the free plugin that helps us to find and fix the bugs and issues of security from the moment when we are writing the code. We can install the same from our favorite IDE. This GUI project is very important.
  • Scout APM – This project contains less time debugging and contains building more time. Scout APM is used to fix and find the performance issue with no hassle. By using the monitoring and external service, scout APM is the best tool at the time of developing any application.
  • Projector client – This is the common and client-related code for the running application of swing remotely. It is a very useful tool when developing GUI applications.

Kotlin GUI FAQ

Given below is the kotlin GUI FAQ:

Q1. In which tool we can create the kotlin GUI project?

Answer:

We can implement the GUI project using the Intellij IDEA or any tool supporting the development of GUI.

Q2. Can we use jbutton in kotlin GUI?

Answer:

We are using the button component of jbutton to develop the GUI application or any application.

Q3. Can we use jlabel in Kotlin GUI?

Answer:

We are using the component of jlabel to develop the GUI application or any application.

Conclusion

The swing and AWT are not different GUI toolkits. The swing is implemented onto the top of AWT. It contains a small standard library so we can use the same code for java script, JVM, and native support.

Recommended Articles

This is a guide to Kotlin GUI. Here we discuss the introduction, application, top kotlin GUI project, and FAQ. You may also have a look at the following articles to learn more –

  1. Kotlin Web Framework
  2. Kotlin Internal
  3. Kotlin print
  4. Kotlin Queue
quiz