Eclipse Java9 Export Runnable JAR File

Question

I am trying to configure Eclipse on Java 9, but the Export → Runnable JAR file does not work, since it cannot find the main method.

Context:

• Windows 10

• Eclipse IDE Oxygen Version 1a Release (4.7.1a) Build: 20171005-1200

• JDK 9.0.1 and JRE 9.0.1 are installed and configured in Eclipse

What I've done:

• File -> New Java Project

• Click Finish

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• Right click on src -> Create -> Class

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Edited Main.java to the following code:

package com.application; public class Main { public static void main(String[] args) { System.out.println(System.getProperty("java.version")); } } 

Run → No errors.

Console log result: "9.0.1"

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Now I want to export the code to the Runnable JAR: Right-click on Project → Export → Runnable JAR file

So, I went to Run Configurations, but the Main class was defined:

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In Java 8, there was no problem exporting jar by following the steps above.

What do I need to do to use the "export to Runnable JAR file" in Java 9?

Answer 1

I had the same problem and I used the export parameter Jar file, not the "Runnable Jar file". Then I selected the options as shown below. In the last step, I chose the main class to make my jar doable. By clicking "Browse", you get the main classes available.