kill the zombies

src/SoundHandler.java

@@ -1,8 +1,10 @@
 import javazoom.jl.decoder.JavaLayerException;
 import javazoom.jl.player.Player;
 
+import java.awt.List;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -10,6 +12,8 @@ public class SoundHandler {
 
     private static boolean soundOn = true;
 
+    private static ArrayList<Thread> runningThreads = new ArrayList<Thread>();
+
     // Wenn fehler beim erstellen von .jar mit sound hier gucken
     private static HashMap<String, String> sounds = new HashMap<String, String>(Map.of(
             "hit", "./Sound/water-drip.mp3"
@@ -17,7 +21,7 @@ public class SoundHandler {
 
     public static void playSound(String soundName) {
         if (soundOn) {
-            new Thread(new Runnable() {
+            Thread thread = new Thread(new Runnable() {
                 @Override
                 public void run() {
                     try {
@@ -27,9 +31,23 @@ public class SoundHandler {
                         e.printStackTrace();
                     }
                 }
-            }).start();
-            // TODO: kill zombies
+            });
+            thread.start();
+            runningThreads.add(thread);
         }
+        for (Thread oldThread : runningThreads) {
+                if (!oldThread.isAlive()) {
+
+                    try {
+                        oldThread.join();
+                        runningThreads.remove(oldThread);
+                        System.out.println("cleared thread");
+                    } catch (InterruptedException e) {
+                        e.printStackTrace();
+                    }
+
+                }
+            }
     }