Javah error while using it in JNI

Question

Command:

javah -jni JavaHowTo

Result:

error: cannot access JavaHowTo 
class file for JavaHowTo not found

javadoc: error -          


        

Answer 1

For Windows...

FILE DETAILS

javaFileName: HelloWorld.java
packageCode: "package com.accessibility;"
importCode: "import com.accessibility.HelloWorld;"
javaFileLocation: "S:\Accessibility\tools\src\test\java\com\accessibility\HelloWorld.java"

The javaFileLocation should be viewed as having two parts...

classpath: "S:\Accessibility\tools\src\test\java"
relativeFilePath: "com\accessibility\HelloWorld.java"

CREATE CLASS FILE

The second line below was run from the Windows Command Prompt.

{javacLocation} -d {ouputDirectory} {javaFileLocation}
"C:\Program Files\Java\jdk1.6.0_26\bin\javac.exe" -d "S:\Accessibility\tools\src\test\java" "S:\Accessibility\tools\src\test\java\com\accessibility\HelloWorld.java"

This created the HelloWorld.class file

classFileName: HelloWorld.class 
classFileLocation: "S:\Accessibility\tools\src\test\java\com\accessibility\HelloWorld.class"

CREATE HEADER FILE

The second line below was run from the Windows Command Prompt.

{javahLocation} -o {outputFile} -classpath {classpath} {importName}
"C:\Program Files\Java\jdk1.6.0_26\bin\javah.exe" -o "S:\Accessibility\tools\src\test\java\com\accessibility\HelloWorld.h" -classpath "S:\Accessibility\tools\src\test\java" com.accessibility.HelloWorld

This created the HelloWorld.h file

classFileName: HelloWorld.h
classFileLocation: "S:\Accessibility\tools\src\test\java\com\accessibility\HelloWorld.h"