How to make an executable JAR file

Question

I have a program which consists of two simple Java Swing files  How do I make an executable JAR file for my program

User · Accepted Answer

A jar file is simply a file containing a collection of java files. To make a jar file executable, you need to specify where the main Class is in the jar file. Example code would be as follows.

public class JarExample {

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                // your logic here
            }
        });
    }
}

Compile your classes. To make a jar, you also need to create a Manifest File (MANIFEST.MF). For example,

Manifest-Version: 1.0
Main-Class: JarExample

Place the compiled output class files (JarExample.class,JarExample$1.class) and the manifest file in the same folder. In the command prompt, go to the folder where your files placed, and create the jar using jar command. For example (if you name your manifest file as jexample.mf)

jar cfm jarexample.jar jexample.mf *.class

It will create executable jarexample.jar.

User · Answer

Here it is in one line   jar cvfe myjar jar package MainClass   class   where MainClass is the class with your main method  and package is MainClass s package   Note you have to compile your  java files to  class files before doing this   c  create new archive v  generate verbose output on standard output f  specify archive file name e  specify application entry point for stand-alone application bundled into an executable jar file    This answer inspired by Powerslave s comment on another answer

User · Answer

It s too late to answer for this question  But if someone is searching for this answer now I ve made it to run with no errors  First of  all make sure to download and add maven to path    mvn --version   will give you version specifications of it if you have added to the path correctly  Now   add following code to the maven project   pom xml     in the following code replace with your own main file entry point for eg   com example test Test           lt plugin gt               lt  -- Build an executable JAR -- gt               lt groupId gt org apache maven plugins lt  groupId gt               lt artifactId gt maven-jar-plugin lt  artifactId gt               lt version gt 2 4 lt  version gt               lt configuration gt                   lt archive gt                       lt manifest gt                       lt mainClass gt              your package to class that contains main file  MainFileName lt  mainClass gt                       lt  manifest gt                   lt  archive gt               lt  configuration gt           lt  plugin gt   Now go to the command line  CMD  in your project and type mvn package and it will generate a jar file as something like  ProjectName-0 0 1-SNAPSHOT jar under target directory  Now navigate to the target directory by  cd target  Finally type java -jar  jar-file-name jar and yes this should work successfully if you don t have any errors in your program

User · Answer

In Eclipse you can do it simply as follows    Right click on your Java Project and select Export  Select Java - gt  Runnable JAR file - gt  Next  Select the Launch Configuration and choose project file as your Main class Select the Destination folder where you would like to save it and click Finish

User · Answer

If you use maven  add the following to your pom xml file    lt plugin gt       lt  -- Build an executable JAR -- gt       lt groupId gt org apache maven plugins lt  groupId gt       lt artifactId gt maven-jar-plugin lt  artifactId gt       lt version gt 2 4 lt  version gt       lt configuration gt           lt archive gt               lt manifest gt                   lt mainClass gt com path to YourMainClass lt  mainClass gt               lt  manifest gt           lt  archive gt       lt  configuration gt   lt  plugin gt    Then you can run mvn package  The jar file will be located under in the target directory

[java] How to make an executable JAR file?

Examples related to java

Examples related to jar

Examples related to executable-jar