I had the exact same problem, where when I clicked 'Run' I would get a menu with options of 'Ant Build' or 'Ant Build.' -- even though I had a main method. I finally got my program to run as normal when I copied and pasted my code into a new file in a new project folder. I deleted the old file altogether, along with its source folder. When I created the new class, I selected the option 'Use project folder as root for the sources and class files' instead of creating separate folders. Then, when I clicked 'Run', I got some peculiar output the first time that I didn't understand. The second time, however, I got all my programs running as they used to.

If Windows can not execute the program add the. This is because the Java VM in which Ant is running is a standard. Invoked via the Ant Exec task must. Ant is a powerful scripting tool that lets you craft build processes around your code. Automate your build process using Java and Ant. Execute another ant.

I'm not exactly sure what these actions did to solve the problem, as I, too, am a novice programmer. But I'm getting my information from. Hope this helps.

You don't need an ANT build to test run a simple Java application. Here's what I do: With the java source file open, click on the down-arrow next to the green run button on the tool bar. Then choose the run button in the drop-down like this: There is probably a menu option or function key to get there, but I never learned it. On the resulting screen, click the button on the top left corner to launch a new configuration. Here you can supply things like arguments or set a special classpath that's different than your project configuration.