The JavaTM Tutorial
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Trail: Java Native Interface
Lesson: Writing a Java Program with Native Methods

Running javah

UNIX 
% javah -jni HelloWorld
DOS shell (Windows 95/NT) 
C:\> javah -jni HelloWorld
MacOS
Drag the HelloWorld.class file onto the JavaH icon. This creates a file called HelloWorld.h in the same folder as JavaH. Move the file into your working folder.

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