com.github.sarxos.v4l4j

Class NativeUtils

java.lang.Object

com.github.sarxos.v4l4j.NativeUtils

public class NativeUtils
extends Object

Simple library class for working with JNI (Java Native Interface)

Author:

Adam Heirnich , http://www.adamh.cz

See Also:

http://frommyplayground.com/how-to-load-native-jni-library-from-jar

Method Summary

Modifier and Type	Method and Description
static void	addLibraryPath(String pathToAdd) Adds the specified path to the java library path
static void	loadLibraryFromJar(String jarpath, String[] libs) Loads library from current JAR archive The file from JAR is copied into system temporary directory and then loaded.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

loadLibraryFromJar

public static void loadLibraryFromJar(String jarpath,
                                      String[] libs)
                               throws IOException

Loads library from current JAR archive The file from JAR is copied into system temporary directory and then loaded. The temporary file is deleted after exiting. Method uses String as filename because the pathname is "abstract", not system-dependent.

Parameters:

filename - The filename inside JAR as absolute path (beginning with '/'), e.g. /package/File.ext

Throws:

IOException - If temporary file creation or read/write operation fails

IllegalArgumentException - If source file (param path) does not exist

IllegalArgumentException - If the path is not absolute or if the filename is shorter than three characters (restriction of File.createTempFile(java.lang.String, java.lang.String)).

addLibraryPath

public static void addLibraryPath(String pathToAdd)
                           throws Exception

Adds the specified path to the java library path

Parameters:

pathToAdd - the path to add

Throws:

Exception