Initial data commit

Task/Record-sound/Java/record-sound.java

@@ -0,0 +1,65 @@
+import java.io.IOException;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.io.File;
+
+import javax.sound.sampled.AudioFileFormat.*;
+
+public final class SoundRecorder {
+
+    public static void main(String[] args) {
+    	SoundRecorder recorder = new SoundRecorder();
+
+        ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
+        scheduler.schedule( () -> recorder.finish(), 10, TimeUnit.SECONDS);
+        scheduler.shutdown();
+
+        recorder.start();
+    }
+
+    private void start() {
+        try {
+            AudioFormat format = createAudioFormat();
+            DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
+
+            if ( ! AudioSystem.isLineSupported(info) ) {
+                System.out.println("Data line format is not supported");
+                Runtime.getRuntime().exit(0);
+            }
+
+            line = (TargetDataLine) AudioSystem.getLine(info);
+            line.open(format);
+            line.start();
+
+            System.out.println("Starting to capture and record audio");
+            AudioInputStream audioInputStream = new AudioInputStream(line);
+            AudioSystem.write(audioInputStream, audioFileType, wavFile);
+
+        } catch (LineUnavailableException | IOException exception) {
+            exception.printStackTrace(System.err);
+        }
+    }
+
+    private AudioFormat createAudioFormat() {
+        final float sampleRate = 16_000.0F;
+        final int sampleSizeInBits = 16;
+        final int channels = 1;
+        final boolean signed = true;
+        final boolean bigEndian = true;
+        // Monophonic 16-bit PCM audio format
+        return new AudioFormat(sampleRate, sampleSizeInBits, channels, signed, bigEndian);
+    }
+
+    private void finish() {
+        line.stop();
+        line.close();
+        System.out.println("Finished capturing and recording audio");
+    }
+
+    private TargetDataLine line;
+
+    private final File wavFile = new File("SoundRecorder.wav");
+    private final AudioFileFormat.Type audioFileType = AudioFileFormat.Type.WAVE;
+
+}