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Editorial Team
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Asked: 2026-05-11T17:12:03+00:00

Ant Java task provides fork parameter, which, by definition if enabled triggers the class

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Ant Java task provides fork parameter, which, by definition “if enabled triggers the class execution in another VM”. As we are dealing with a large amount of data, setting this parameter saved us from running out of Java heap space.
We want to be able to do the same through a Java class. What would be the best way to achieve the functionality as provided by fork?

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1 Answer

  1. Editorial Team

    Execute another java process. By using ProcessBuilder class, for example.

    http://java.sun.com/javase/6/docs/api/java/lang/ProcessBuilder.html

    You can run as many worker processes as you wish. Make them having a separate main class, doing their tasks from that main class, and quiting when their task is completed.

    You’ll have to figure out their classpath, and the location of java binary on the system, but that’s doable.

    I think you can even be notified when they complete via Process.waitFor().

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