Execute the Java Program

At this point, we can execute the program we created:

java -classpath [whatever] example.jni.HelloWorld

Again, we need to have the DLL in our java.library.path, either by:

• Executing it from the directory in which the DLL is located,
• Placing HelloWorld.dll into one of the directories in the Windows PATH,
• Changing the java.library.path via the -D command-line option on java.exe.

If everything's working fine, we should get:

Hello World!

Hooray! You should be able to execute the Java program from inside or outside Cygwin, since we used the -mno-cygwin option on gcc.

Please let me know if you find errors or omissions in this walkthrough, or have general comments or questions.