CODEWITHSUNDEEP
javac++javah
orthehelper
orthehelper

Reputation: 4079

Use javah to generate header file

i am triyng to generate header file for native use (c/c++) from a java file using eclipse. from the command line i can only reach the javah when i am in this location :

C:\Program Files (x86)\Java\jdk1.7.0_51\bin>

but i cant reference my java class like so :

C:\Program Files (x86)\Java\jdk1.7.0_51\bin>javah -jni com.or.jnihelloworld.nativeclass

because the class located outside of this folder at :

C:\Users\Or Azran\workspace\JniHelloWorld\src\NativeLib.java

and i want to make this file in to a jni folder in :

C:\Users\Or Azran\workspace\JniHelloWorld\jni

how can i do it from command line? a good toturial will be also great

Upvotes: 0

Views: 2318

Answers (2)

user207421
user207421

Reputation: 310980

Your PATH doesn't include the bin directory of the JDK.

Upvotes: 1

AllenKll
AllenKll

Reputation: 1066

There appears to be a couple of issues to solve here.

First. I'm not sure that your source code is set up correctly. If indeed your class is com.or.jnihelloworld.nativeclass then it should be in directory: C:\Users\Or Azran\workspace\JniHelloWorld\src\com\or\jnihelloworld\nativeclass.java

However, assuming that the class/directory is correct. The javah command uses -d to specify the output directory, and you can specify the path with -classpath so 

javah -classpath "C:\Users\Or Azran\workspace\JniHelloWorld\src\" \ 
-d "C:\Users\Or Azran\workspace\JniHelloWorld\jni" com.or.jnihelloworld.nativeclass

should put the file where you want it.

Upvotes: 3

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