Develop Reference

Unable to load jri.dll while trying to run R from Java(IntelliJ)

I am trying to call jri.dll from java
static {
System.loadLibrary("jri");
}
I've also set library path in VM options:
-Djava.library.path="D:\rJava\jri\x64;C:\Program Files\R\R-3.5.1\bin\x64;"
Cannot find JRI native library!
Please make sure that the JRI native library is in a directory listed in java.library.path.
java.lang.UnsatisfiedLinkError: D:\rJava\jri\x64\jri.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at org.rosuda.JRI.Rengine.<clinit>(Rengine.java:19)

jniopencv_objdetect.dll: Can't find dependent libraries

First sorry for my bad english..
Well, i'm having a huge problem with the 2 .jar or libraries JAVACV and OPENCV, i'm triying to build a LOGIN with Face tracking and Face Recognition, but when i try to run the Main.java popups this problem:
run:
Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniopencv_objdetect in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1886)
at java.lang.Runtime.loadLibrary0(Runtime.java:849)
at java.lang.System.loadLibrary(System.java:1088)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:701)
at com.googlecode.javacpp.Loader.load(Loader.java:578)
at com.googlecode.javacpp.Loader.load(Loader.java:532)
at com.googlecode.javacv.cpp.opencv_objdetect.<clinit>(opencv_objdetect.java:91)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at com.googlecode.javacpp.Loader.load(Loader.java:553)
at com.googlecode.javacpp.Loader.load(Loader.java:532)
at com.googlecode.javacv.cpp.opencv_objdetect$CvHaarClassifierCascade.<clinit>(opencv_objdetect.java:170)
at reconocimiento.ReconocimientoCaras.<init>(ReconocimientoCaras.java:51)
at reconocimiento.ReconocimientoCaras.<clinit>(ReconocimientoCaras.java:53)
at reconocimiento.Main.main(Main.java:25)
Caused by: java.lang.UnsatisfiedLinkError: C:\Users\Carlos\AppData\Local\Temp\javacpp42613800564148\jniopencv_objdetect.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1965)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1890)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1851)
at java.lang.Runtime.load0(Runtime.java:795)
at java.lang.System.load(System.java:1062)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:690)
... 11 more
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)
How can i solve this problem?

Check your OS that whether it is 32bit or 64bit.Then install the appropriate version opencv and javacv.

Trying to make java application (Executable Jar) that uses OpenCV portable. Getting unsatisfied link error

I have made a application to grab video from a webcam and detect motion using OpenCV and JavaCV. I am trying to export as an executable jar using eclipse. The program runs fine in eclipse as does the exe jar on the computer I coded the program on.
What I am trying to accomplish is to make the exe Jar run on computers that don't have OpenCV installed. Basically what I would consider a portable application. When I run the exe jar on a different computer that has nothing installed other than the JRE I get unsatisfied link errors seen below.
Exception in thread "Video Thread" java.lang.UnsatisfiedLinkError: C:\Users\JohnD\AppData\Local\Temp\javacpp91062429652918\jniopencv_core.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary1(Unknown Source)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.load0(Unknown Source)
at java.lang.System.load(Unknown Source)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:566)
at com.googlecode.javacpp.Loader.load(Loader.java:489)
at com.googlecode.javacpp.Loader.load(Loader.java:431)
at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:136)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.googlecode.javacpp.Loader.load(Loader.java:453)
at com.googlecode.javacv.cpp.opencv_imgproc.<clinit>(opencv_imgproc.java:97)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.googlecode.javacpp.Loader.load(Loader.java:453)
at com.googlecode.javacv.cpp.opencv_highgui.<clinit>(opencv_highgui.java:85)
at com.googlecode.javacv.OpenCVFrameGrabber.start(OpenCVFrameGrabber.java:174)
at VideoPanel.run(VideoPanel.java:163)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.UnsatisfiedLinkError: no opencv_core244 in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:593)
at com.googlecode.javacpp.Loader.load(Loader.java:481)
... 13 more
I have looked for a solution to what I am doing wrong. Most of the topics I have come across with unsatisfied link errors like the ones I am receiving have been trying to get it to run the first time through within there IDE, which is not the case here. I would think my dependencies are correct in the libraries in the build path since I can get it to run perfectly when I am on the computer that has everything installed but I still believe I am doing something wrong with the build.
Again I am trying to make it so the Jar can run on computers where OpenCV/JavaCV is not installed. Any help would be greatly appreciated.

If opencv is not installed in the target machine, than you need to deliver the necessary opencv's dll file and set the corresponding library path, opencv is a precondition of javacv
for example:
jar yourapp.jar -Djava.library.path="/path/to/OpenCV/library"
also check this answer

jpl.dll: Can't find dependent libraries

I am using java netbeans and want to use prolog api in it but i keep getting error
Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Program Files\swipl\bin\jpl.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1939)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1864)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1825)
at java.lang.Runtime.load0(Runtime.java:792)
at java.lang.System.load(System.java:1059)
at contacteditor.Advisory.<init>(Advisory.java:18)
at contacteditor.ContactEditor.main(ContactEditor.java:21)
Can anyone help me out please ?

Error while launching my java application(swt) on Mac

I am developing a java application on windows 7 (32 bit) machine. I used SWT in my application and run it by Java Web Start. It is working fine on windows 7 but when I try to run it on MAC OSX 10.6.8 it is unable to launch my application. I have added "swt-3.7M5-win32-win32-x86.jar" in my library.
I added the following line in my jnlp file to run it on 32 bit JVM:
<j2se version="1.6+" java-vm-args="-d32" href="http://java.sun.com/products/autodl/j2se"/>
but still it is not working.
It is throwing the following error:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.javaws.Launcher.executeApplication(Launcher.java:1914)
at com.sun.javaws.Launcher.executeMainClass(Launcher.java:1847)
at com.sun.javaws.Launcher.doLaunchApp(Launcher.java:1609)
at com.sun.javaws.Launcher.run(Launcher.java:138)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
no swt-win32-3721 in java.library.path
no swt-win32 in java.library.path
Can't load library: /Users/Rajivj/.swt/lib/macosx/x86/libswt-win32-3721.jnilib
Can't load library: /Users/Rajivj/.swt/lib/macosx/x86/libswt-win32.jnilib
at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
at org.eclipse.swt.internal.C.<clinit>(Unknown Source)
at org.eclipse.swt.widgets.Display.<clinit>(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at org.eclipse.swt.graphics.Device.<clinit>(Unknown Source)
at chrriis.dj.nativeswing.swtimpl.core.SWTNativeInterface$InProcess.initialize(SWTNativeInterface.java:559)
at chrriis.dj.nativeswing.swtimpl.core.SWTNativeInterface$InProcess.access$2(SWTNativeInterface.java:558)
at chrriis.dj.nativeswing.swtimpl.core.SWTNativeInterface.initialize_(SWTNativeInterface.java:238)
at chrriis.dj.nativeswing.swtimpl.NativeInterface.initialize(NativeInterface.java:71)
at chrriis.dj.nativeswing.swtimpl.core.SWTNativeInterface.open_(SWTNativeInterface.java:316)
at chrriis.dj.nativeswing.swtimpl.NativeInterface.open(NativeInterface.java:100)
at rtlmatrixcloud.Main.main(Main.java:32)
... 9 more
Can anyone tell me How do I solve this problem?
Any help would be appreciated.
Thanks
Sonal

This is the root problem:
Caused by: java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
no swt-win32-3721 in java.library.path
no swt-win32 in java.library.path
Can't load library: /Users/Rajivj/.swt/lib/macosx/x86/libswt-win32-3721.jnilib
Can't load library: /Users/Rajivj/.swt/lib/macosx/x86/libswt-win32.jnilib
First check that these lib files are there. I believe they are because it says "UnsatisfiedLinkError" and does not complain that file is not found. In this case check your SWT installation. It seems these libraries do not match your JVM. Typically such exception is thrown when for example 32 bit JVM tries to invoke 64 bit library or vice versa.