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Editorial Team
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Asked: 2026-05-15T14:53:41+00:00

I have made a Java Applet that depends on some third party libriaries as

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I have made a Java Applet that depends on some third party libriaries as well as a DLL that is called via JNI. These will obviously not be installed on clients computers. Is there anyway to package these third party libriaries and external DLLs within my Applet’s JAR so that it can be run by any client with a base Java install?

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  1. Editorial Team

    Using JNI within a web application is a recipe for heartburn, particularly in Windows.

    • You obviously can’t deploy the DLL within your WAR file and will probably require a separate installer be run by the deployer beforehand.
    • You’ll have to ensure that your java.library.path is setup correctly, which is usually done by settings in the application server rather than something deployable in the WAR file.
    • The way that JNI links the native class with the library will cause class loader headaches if you try to run more than one instance of that web application. One way to work around this is to move the containing JAR file into a shared class loader (like Tomcat’s common folder) but that has its own complications.
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