How to Run a Jar File to Download as an Add-on for a Software

Java is the best programming language available today that works beyond different platforms. I dearest Java and JavaFX. In one case yous stop writing your application, you may desire to release it. The problem is, the native Coffee program executable, the expert old .jar files always have a cup icon and sometimes a simple double click wont open them. The solution to this problem is to catechumen JARs to native executable, for windows .exe files.

In this commodity, I will explain how to make windows executable (.exe) from your Java / JavaFX programme. Having exe file for windows has many advantages. We can set icons, properties, version data etc.

Step 1 : Make JAR file for your application

The get-go step is making a JAR file from your java code. This is pretty simple if you are using an IDE like NetBeans.

NetBeans : NetBeans provide option for making JAR file very easily. But right click on your project from Projects window and and so select "clean and build". This will create a binder called "dist" in your project directory. Within dist, there will be the final JAR. All the libraries required for running the program will be within "/dist/lib" directory.

Maven : Maven uses convention over configuration, this means that you only demand to tell Maven the things that are different from the defaults. Yous can use "mvn package" command to create JAR files.

Step two : Download Launch4J

Launch4J is so far the all-time wrapper available for converting JAR files to windows executable. It is written in JAVA and is open source. Download latest version of Launch4J from http://launch4j.sourceforge.internet/. One time You install and open it, you will go the following screen.

On the first look, the interface may look piffling disruptive, but it is actually elementary and every field will become too important once yous go used to information technology.

Pace iii : Launch4J Basic Configurations

This tab contains the most basic configurations for the exe like jar file to be converted and the icon to be used.

Basic

Output File
This is the location where the compiled EXE (executable) file volition be created in one case the conversion is complete
Jar
Location of the Jar file to exist converted in to executable
Wrapper manifest
Y'all can specify manifest file hither. This will be used for processing the application against User Account Control(UAC) in windows.
Icon
Hither you can specify the icon. It has to be in ico format.
Change dir
Change current directory to an capricious path relative to the executable. If you omit this property or leave it blank it will have no effect. Setting it to . will change the electric current dir to the same directory equally the executable. .. will change information technology to the parent directory, and so on.
Command line args
Here you can specify the java arguments

In case if the arrangement doesn't have supported Java, the error message and URL to download tin be specifed under the Coffee Download and Support Sections.

Classpath

Here you can specify classpath for your principal class. Select the JAR file by selecting the directory icon from correct and the default classpath corresponding to main class will exist loaded. Y'all can edut them from Edit Item text field.
Y'all can also add together or remove classpath for given main class from this section.

Unmarried Instance

Here you tin can specify whether y'all need just once instance of the awarding running at a time. Give a mutext proper name and window title if single instance selection needed.

JRE

This section allows configuring JRE. If you are bundling JRE with your product (Which is not a good idea at all), you can specify the path here. You tin check the 'Fallback choice' so that the bundled JRE will simply be used when the JRE isntalled on the system does not matches with min and max version requirement.

Min JRE Version is a mandatory field and it has to be specified.Y'all tin can besides specify Heap parameters or whatever JVM options in the corresponding fields.

Splash

If y'all need a custom splash screen, you tin check the "Enable Splash Screen pick". Then specify the file (Either bitmap image or JAR file). In the TimeOut field, fourth dimension out can be specified.

Version Info

This is a good way to properly specify version information for your executable. This entries will so be shown in the properties department of executable.

Letters

Messages section allows to create custom messages when errors occur. You can enable this choice past checking "Add together custom messages".

Footstep four : Compile and Make Executable

Once the entries are filled, you lot have to salvage the configuration. For saving, click on the Floppy DIsk icon from the menu. Your configuration entries will exist saved every bit an xml file called config.xml. After saving click on the Setting like icon next to save button to start converting to executable file.

Launch4J Example Configuration — Launch4J Instance Configuration

If information technology the wrapping was a success, you should encounter the following messages in Log

          Compiling resources Linking Wrapping Successfully created D:\Library Assistant\dist\Library Software.exe

You tin can kickoff your program from executable by clicking on the Play button from menu.

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