Running Ant Build.xml getting: Java Virtual Machine Launcher: Could not find the main class. Program will exit

java eclipse ant build.xml
topcan5 picture topcan5 · Jul 2, 2013 · Viewed 26k times · Source

I am writing my code in eclipse, the code is running fine but when I try to build it in ant by running build.xml. I am getting

Java Virtual Machine Launcher: Could not find the main class. Program will exit.

Any suggestions?

Answer

Seif Tamallah picture Seif Tamallah · Oct 3, 2015

if you are using java 1.6 and upgraded eclipse, it's more likely caused by eclipse the solution is to go to Run as → External tools configuration… → JRE where the default was set to “Separate JDK”: jdk1.6.0_31 and change this to “run in the same JRE as the workspace” (1.7/1.8), and it should works.

Bug fix would be to provide a working default configuration with setup. Configuration should be in a way it does not break if the user adds additional JDKs to Preferences.

for more details you can see Bug 472599

Related questions

Any way to generate ant build.xml file automatically from Eclipse?

From Eclipse, I found I can easily export an Ant build file for my project. It provides references to 3rd party libraries and some base targets. I'm using it from my global build file. The only thing that bothers me …

Read More
Ant build.xml cannot find symbol in included .jar

I am migrating multiple projects from a purely desktop Eclipse dev & build to a buildserver (Jenkins-CI) environment. For this project, I can run the build.xml -> Run As -> Ant build successfully under Eclipse, but it …

Read More
How do I check out an SVN project into Eclipse as a Java project?

I was trying to check out a project from SVN using Eclipse. I tried using "Checkout As" to make it into a "Java project from existing Ant script", but the project wizard requires the file to have already been downloaded. …

Read More