--- a/src/goodjava/webserver/Server.java	Sun May 10 22:28:13 2020 -0600
+++ b/src/goodjava/webserver/Server.java	Sun May 10 22:48:15 2020 -0600
@@ -5,8 +5,8 @@
 import java.net.ServerSocket;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
-import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.Executors;
+import java.util.concurrent.ExecutorService;
 import java.util.concurrent.TimeUnit;
 import goodjava.logging.Logger;
 import goodjava.logging.LoggerFactory;
@@ -17,7 +17,7 @@
 
 	public final int port;
 	public final Handler handler;
-	public static final ThreadPoolExecutor threadPool = (ThreadPoolExecutor)Executors.newCachedThreadPool();
+	public static final ExecutorService threadPool = Executors.newCachedThreadPool();
 
 	public Server(int port,Handler handler) {
 		this.port = port;