add java onnx example

examples/java-example/src/main/java/org/example/App.java

@@ -0,0 +1,69 @@
+package org.example;
+
+import ai.onnxruntime.OrtException;
+import javax.sound.sampled.*;
+import java.util.Map;
+
+public class App {
+
+    private static final String MODEL_PATH = "src/main/resources/silero_vad.onnx";
+    private static final int SAMPLE_RATE = 16000;
+    private static final float START_THRESHOLD = 0.6f;
+    private static final float END_THRESHOLD = 0.45f;
+    private static final int MIN_SILENCE_DURATION_MS = 600;
+    private static final int SPEECH_PAD_MS = 500;
+    private static final int WINDOW_SIZE_SAMPLES = 2048;
+
+    public static void main(String[] args) {
+        // Initialize the Voice Activity Detector
+        SlieroVadDetector vadDetector;
+        try {
+            vadDetector = new SlieroVadDetector(MODEL_PATH, START_THRESHOLD, END_THRESHOLD, SAMPLE_RATE, MIN_SILENCE_DURATION_MS, SPEECH_PAD_MS);
+        } catch (OrtException e) {
+            System.err.println("Error initializing the VAD detector: " + e.getMessage());
+            return;
+        }
+
+        // Set audio format
+        AudioFormat format = new AudioFormat(SAMPLE_RATE, 16, 1, true, false);
+        DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
+
+        // Get the target data line and open it with the specified format
+        TargetDataLine targetDataLine;
+        try {
+            targetDataLine = (TargetDataLine) AudioSystem.getLine(info);
+            targetDataLine.open(format);
+            targetDataLine.start();
+        } catch (LineUnavailableException e) {
+            System.err.println("Error opening target data line: " + e.getMessage());
+            return;
+        }
+
+        // Main loop to continuously read data and apply Voice Activity Detection
+        while (targetDataLine.isOpen()) {
+            byte[] data = new byte[WINDOW_SIZE_SAMPLES];
+
+            int numBytesRead = targetDataLine.read(data, 0, data.length);
+            if (numBytesRead <= 0) {
+                System.err.println("Error reading data from target data line.");
+                continue;
+            }
+
+            // Apply the Voice Activity Detector to the data and get the result
+            Map<String, Double> detectResult;
+            try {
+                detectResult = vadDetector.apply(data, true);
+            } catch (Exception e) {
+                System.err.println("Error applying VAD detector: " + e.getMessage());
+                continue;
+            }
+
+            if (!detectResult.isEmpty()) {
+                System.out.println(detectResult);
+            }
+        }
+
+        // Close the target data line to release audio resources
+        targetDataLine.close();
+    }
+}