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POJNI - java.lang.UnsatisfiedLinkError - Ubuntu 12.04 LTS
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  1. POJNI - java.lang.UnsatisfiedLinkError - Ubuntu 12.04 LTS
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    copied!<p>I understand this question has been asked many times, I have read many post without positive outcome, thus seeking assistance. </p> <p>Original source is <a href="http://www.ibm.com/developerworks/java/tutorials/j-jni/section2.html" rel="nofollow">Java Programming with JNI</a></p> <p>I am getting the following error</p> <pre><code>Exception in thread "main" java.lang.UnsatisfiedLinkError: no libSample1 in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1738) at java.lang.Runtime.loadLibrary0(Runtime.java:823) at java.lang.System.loadLibrary(System.java:1028) at Sample1.main(Sample1.java:10) </code></pre> <p>Source code is as follows </p> <p>Sample1.java</p> <pre><code>public class Sample1 { public native int intMethod(int n); public static void main(String[] args) { System.loadLibrary("libSample1"); Sample1 sample = new Sample1(); int square = sample.intMethod(5); System.out.println("intMethod " + square); } } </code></pre> <p>Sample1.h</p> <pre><code>/* DO NOT EDIT THIS FILE - it is machine generated */ #include &lt;jni.h&gt; /* Header for class Sample1 */ #ifndef _Included_Sample1 #define _Included_Sample1 #ifdef __cplusplus extern "C" { #endif JNIEXPORT jint JNICALL Java_Sample1_intMethod (JNIEnv *, jobject, jint); #ifdef __cplusplus } #endif #endif </code></pre> <p>Sample1.cpp</p> <pre><code>#include "Sample1.h" #include &lt;string.h&gt; JNIEXPORT jint JNICALL Java_Sample1_intMethod(JNIEnv *env, jobject obj, jint num) { return num * num ; } </code></pre> <p><strong>OS: Ubuntu 12.04 LTS</strong></p> <p>Compile command </p> <pre><code>g++ -shared -fPIC -I/usr/lib/jvm/jdk1.6.0_45/include -I/usr/lib/jvm/jdk1.6.0_45/include/linux Sample1.cpp -o libSample1.so </code></pre> <p>I also have tried </p> <pre><code>java -Djava.library.path=/home/userid/java_proj/example Sample1 </code></pre> <p>Thank you for the help in advance</p> <p><strong>Update -> Answer:</strong> Javah -jni Sample1 fixed the problem</p> <p>Thanks</p>
 

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