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PATH Java Developer Documentation
> Mac OS Runtime for Java
> MRJToolkit
> Programming With MRJToolkit
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When building your Java application, you must link against the file MRJToolkitStubs.zip , which allows your application to access the proper MRJToolkit methods at runtime. This file contains the proper class declarations, but only stub implemenations (that is, the code does nothing).
The Java class files that make up MRJToolkit are stored in the file MRJClasses.zip , which is placed in the Extensions folder as part of the normal MRJ installation for MRJ 1.5 and later. If desired, you can choose to package the file MRJToolkitStubs.zip with your Java application using JBindery. Doing so ensures that your application can always find a set of MRJToolkit classes (even if they are the stub versions that do nothing). For more information about including Java classes with your application, see the document Using JBindery .
Note
MRJToolkit classes are included in MRJClasses.zip only with MRJ 1.5 and later. If the MRJToolkit libraries are not available on the host computer at execution time and you have not included MRJToolkitStubs.zip with your application, an error occurs.
If you are writing code meant to be compatible with multiple platforms, you can check for the presence of MRJToolkit using the isMRJToolkitAvailable method in the class com.apple.mrj.MRJApplicationUtils .
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