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    <p>Unfortunately, while the Java <em>community</em> seems to be very enthusiastic about polyglot programming, the IDE vendors haven't really kept up. They generally <em>do</em> have plugins for Java, Scala, Clojure, Groovy, Ruby, ECMAScript, Python, C++ projects, but <em>mixing</em> multiple languages in <em>one</em> project is generally not supported.</p> <p>In Ruby, for example, it is quite common to use Swing as a GUI via JRuby. But if you want to use Matisse, the NetBeans Swing GUI builder you must use a Java project, you cannot use Matisse in a Ruby project. However, if you use a Java project, then you can't have a Ruby main executable, you must have a Java main executable. Also, you don't get Rake support and other things that the Ruby project type supports. (The ugly workaround is to write a Java main executable which creates a <code>JRubyEngine</code> instance by hand, loads the <em>Ruby</em> main executable into it and runs it.)</p> <p>The Eclipse Scala plugin supports a limited amount of polyglotism, but the hoops that they have to jump through are tremendous. Basically, they use runtime bytecode patching to inject Scala Aspects into the Java Development Tools Eclipse plugin, to get type-driven cross-language refactorings to work. The Groovy plugin does similar things, as does AspectJ (in fact, they originally came up with the idea of using aspect weaving to inject new functionality into JDT). So, all of these plugins allow polyglot programming with themselves and Java. But unfortunately not with each other. (Although several of the maintainers have expressed interest in more closely collaborating.)</p> <p>In general, I fear that the only solution is new IDEs.</p>
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    1. POHow do I mix JVM based languages in a single Netbeans project?
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    1. USJörg W Mittag
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    1. COAnyone know where IntelliJ stands on this?
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      1. USjomohke
    2. COYes! Please see my answer to the question.
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      1. USCarl Smotricz
 

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