added RumbleTest.java

src/RumbleTest.java

@@ -0,0 +1,22 @@
+public class RumbleTest {
+    public static void main(String[] args) {
+        int numberOfBots = 5;
+
+        Thread[] botThreads = new Thread[numberOfBots];
+
+        for (int i = 0; i < numberOfBots; i++) {
+            RumbleBot rumbleBot = new RumbleBot(args);
+
+            botThreads[i] = new Thread(rumbleBot::run);
+            botThreads[i].start();
+        }
+
+        for (Thread botThread : botThreads) {
+            try {
+                botThread.join();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}