September 2017 Update

Task/Record-sound/Kotlin/record-sound.kotlin

@@ -0,0 +1,45 @@
+// version 1.1.3
+
+import java.io.File
+import javax.sound.sampled.*
+
+const val RECORD_TIME = 20000L // twenty seconds say
+
+fun main(args: Array<String>) {
+    val wavFile = File("RecordAudio.wav")
+    val fileType = AudioFileFormat.Type.WAVE
+    val format = AudioFormat(16000.0f, 16, 2, true, true)
+    val info = DataLine.Info(TargetDataLine::class.java, format)
+    val line = AudioSystem.getLine(info) as TargetDataLine
+
+    // Creates a new thread that waits for 'RECORD_TIME' before stopping
+    Thread(object: Runnable {
+        override fun run() {
+            try {
+                Thread.sleep(RECORD_TIME)
+            }
+            catch (ie: InterruptedException) {
+                println(ie.message)
+            }
+            finally {
+                line.stop()
+                line.close()
+            }
+            println("Finished")
+         }
+    }).start()
+
+    // Captures the sound and saves it in a WAV file
+    try {
+        if (AudioSystem.isLineSupported(info)) {
+            line.open(format)
+            line.start()
+            println("Recording started")
+            AudioSystem.write(AudioInputStream(line), fileType, wavFile)
+        }
+        else println("Line not supported")
+    }
+    catch (lue: LineUnavailableException) {
+        println(lue.message)
+    }
+}