Update java usage

Author: Ziyi6

README.md

@@ -406,11 +406,15 @@ TEN VAD provides comprehensive Java support with JNI (Java Native Interface) bin
 #### **Compilation**
 
 ```bash
-# Compile Java source
-javac -cp . include/TenVad.java examples/TestTenVad.java
+# Compile Java source, note if JNA library is not installed, you should download it first. For example, you can download JNA library and include it here. You can also export it to the CLASSPATH environment variables
+wget https://repo1.maven.org/maven2/net/java/dev/jna/jna/5.13.0/jna-5.13.0.jar # I just picked a random version
+javac -encoding UTF-8 -cp jna-5.13.0.jar -d . include/TenVad.java examples/TestTenVad.java
 
-# Run example
-java -cp . -Djava.library.path=lib TestTenVad s0724-s0730.wav out.txt
+# Run example in the project root directory
+java -cp .:jna-5.13.0.jar TestTenVad examples/s0724-s0730.wav examples/out.txt
+
+# Run example in the examples directory
+java -cp ..:../jna-5.13.0.jar TestTenVad s0724-s0730.wav out.txt
 ```
 
 #### **Example Code**

examples/TestTenVad.java

@@ -6,7 +6,7 @@
 //
 
 
-// import com.ten.vad.TenVad; // Uncomment when using package structure
+import com.ten.vad.TenVad; // Comment when not using package structure
 import javax.sound.sampled.*;
 import java.io.*;
 import java.nio.ByteBuffer;

include/TenVad.java

@@ -76,11 +76,27 @@ private static String getLibPath() {
         String osName = System.getProperty("os.name").toLowerCase();
         String arch = System.getProperty("os.arch").toLowerCase();
         try {
+            // Get the directory where the class file is located
             String currentDir = Paths.get(TenVad.class.getProtectionDomain()
-                .getCodeSource().getLocation().toURI()).getParent().toString();
-            if (osName.contains("linux")) return Paths.get(currentDir, "lib", "Linux", "x64", "libten_vad.so").toString();
-            if (osName.contains("windows")) return Paths.get(currentDir, "lib", "Windows", (arch.contains("64") ? "x64" : "x86"), "ten_vad.dll").toString();
-            if (osName.contains("mac")) return Paths.get(currentDir, "lib", "macOS", "ten_vad.framework", "ten_vad").toString();
+                .getCodeSource().getLocation().toURI()).toString();
+            
+            // If currentDir points to a .class file or directory, navigate up to project root
+            // Handle both packaged (jar) and unpackaged (file system) cases
+            File baseDir = new File(currentDir);
+            if (baseDir.isFile()) {
+                baseDir = baseDir.getParentFile(); // Go up from jar file
+            }
+            // If we're in a package structure (com/ten/vad), go up to project root
+            while (baseDir != null && !new File(baseDir, "lib").exists()) {
+                baseDir = baseDir.getParentFile();
+            }
+            
+            if (baseDir != null && new File(baseDir, "lib").exists()) {
+                String projectRoot = baseDir.getAbsolutePath();
+                if (osName.contains("linux")) return Paths.get(projectRoot, "lib", "Linux", "x64", "libten_vad.so").toString();
+                if (osName.contains("windows")) return Paths.get(projectRoot, "lib", "Windows", (arch.contains("64") ? "x64" : "x86"), "ten_vad.dll").toString();
+                if (osName.contains("mac")) return Paths.get(projectRoot, "lib", "macOS", "ten_vad.framework", "Versions", "A", "ten_vad").toString();
+            }
         } catch (Exception ignore) {}
         return "ten_vad";
     }