Create Runnable JAR From Selenium Script Using Eclipse

Last modified on August 16, 2021

This tutorial explains how to convert a Selenium 2 script into a runnable JAR file. The resulting JAR file can be uploaded to the AlertSite monitoring platform to be run from many monitoring locations worldwide.

We will first export the script to a Java file using the JUnit test format, then create and configure a Java project using Eclipse IDE, and finally build the project into as a runnable JAR file.

If you already have a ready Eclipse JUnit project, you can skip to step 3 – Add Main Method.

What You Will Need

1. Export Selenium Script

We assume that you already have a script recorded with Selenium IDE. Refer to the Selenium IDE documentation to learn how to create Selenium scripts.

Make sure your script is played back successfully in the Selenium IDE before you export it.

To export your Selenium script to a Java file:

  1. In Selenium IDE, select File > Export Test Case As > Java / JUnit / Web Driver from the menu. (AlertSite supports only JUnit-based Selenium scripts.)

    Selenium IDE: Export test case

    Or, if you have a test suite with several test cases and you want to export the entire suite, select File > Export Test Suite As > Java / JUnit / WebDriver.

  2. Save the generated .java file.

2. Create Eclipse Project

To create a new Java project in Eclipse, select File > New > Java Project from the Eclipse menu.

Specify the project name and location. Leave other options as is and click Next.

Create a Java Project

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On the next page, switch to the Libraries tab and click Add External JARs.

Add External JARs

Browse to the folder where you unzipped the Selenium Java libraries and add the selenium-java-X.X.X.jar file (not selenium-java-X.X.X-srcs.jar).

Adding the selenium-java-X.X.X.jar file

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Click Add External JARs again and add all files from the Selenium libs subfolder. To select all files, press Ctrl+A on Windows or Command+A on Mac.

Adding Selenium libs

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Click Finish. Your project should look like this:

Eclipse Java project with Selenium libraries

Next, create a package (namespace) for your Selenium test. To do that, right-click the project and select New > Package.

Add new package

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Enter the package name and click Finish.

Tip: Java package names should be all lowercase and begin with your company’s reversed Internet domain name, for example, com.smartbear.tests or org.mycompany.productname.tests.
Create a new Java package

Copy or move your Selenium .java file to the folder of the created package (in the above example – to the src\com\example\tests subfolder of the Eclipse project).

After refreshing (F5) your project should look like this.

Eclipse Java project

3. Add Main Method

A runnable JAR needs a main method. Java code generated by Selenium does not include the main method, but it is easy to add it.

Edit your .java file and add these lines at the beginning of the file, after other imports:


import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.internal.TextListener;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;

Then, add this main method inside the class:


public static void main(String args[]) {
  JUnitCore junit = new JUnitCore();
  junit.addListener(new TextListener(System.out));
  Result result =; // Replace "SampleTest" with the name of your class
  if (result.getFailureCount() > 0) {
    System.out.println("Test failed.");
  } else {
    System.out.println("Test finished successfully.");

If you have several Firefox versions installed, add the following lines at the beginning of the main method to specify the path to Firefox 46:


if (System.getProperty("webdriver.firefox.bin") == null) {
  // Replace with your Firefox 46 path
  System.setProperty("webdriver.firefox.bin", "C:\\Program Files (x86)\\Mozilla Firefox 46\\firefox.exe");

Your code should look like this:

Added code

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(Optional.) If Eclipse shows warnings about unused imports and methods, remove unused code.

Removing unused imports in Eclipse

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Now, let us run the code to make sure it works correctly. To do that, right-click the .java file and select Run As > Java Application.

Run as Java application

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This will run your Selenium script: start Firefox, navigate to the tested web page, perform the test actions, and then close the browser. You should see Test finished successfully in the Eclipse console.

Test finished successfully

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If an error occurs, fix the code to avoid the error. Solutions for various Selenium and Java errors can be found on the Internet.

4. Export Project as Runnable JAR

Once your code plays back successfully, you need to export the Java project to a runnable JAR file so that it can be run by AlertSite.

To export your project, right-click it and select Export.

Export project

Select Java > Runnable JAR file as the export destination and click Next.

Export destination - Runnable JAR file

On the next page, specify the name and path of the JAR file to create and select the Launch configuration that includes the project name and the name of the test class.

Also, be sure to select Package required libraries into generated JAR to embed Selenium libraries into your JAR file. JARs created without this option cannot be run by AlertSite.

Runnable JAR File Specification

Click Finish to create the JAR file.

To confirm that the JAR file has been properly packaged, open the command prompt and run this command:

java -jar <path>\filename.jar

For example:

java -jar C:\Tests\AlertSiteSeleniumExample.jar

This will open Firefox and run your Selenium script. You should see Test finished successfully in the console.

What is Next

Now that you have a runnable JAR file containing your Selenium script, you can upload it to AlertSite to run your script from various locations around the world.

See Also

Website Monitoring With Selenium and AlertSite
Guidelines for Selenium Scripts

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