diff --git a/core-java-modules/core-java-concurrency-simple/src/main/java/com/baeldung/concurrent/executorservice/ExecuteExample.java b/core-java-modules/core-java-concurrency-simple/src/main/java/com/baeldung/concurrent/executorservice/ExecuteExample.java
deleted file mode 100644
index 6b6d6e3e8a..0000000000
--- a/core-java-modules/core-java-concurrency-simple/src/main/java/com/baeldung/concurrent/executorservice/ExecuteExample.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.baeldung.concurrent.executorservice;
-
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-
-public class ExecuteExample {
-    public static void main(String[] args) {
-        ExecutorService executorService = Executors.newFixedThreadPool(2);
-        // Task using Runnable
-        Runnable task = () -> {
-            int[] numbers = { 1, 2, 3, 4, 5 };
-            int sum = 0;
-            for (int num : numbers) {
-                sum += num;
-            }
-            System.out.println("Sum calculated using execute:" + sum);
-        };
-        // Submit the task using execute
-        executorService.execute(task);
-        executorService.shutdown();
-
-    }
-
-}
diff --git a/core-java-modules/core-java-concurrency-simple/src/main/java/com/baeldung/concurrent/executorservice/SubmitExample.java b/core-java-modules/core-java-concurrency-simple/src/main/java/com/baeldung/concurrent/executorservice/SubmitExample.java
deleted file mode 100644
index cd715edcc0..0000000000
--- a/core-java-modules/core-java-concurrency-simple/src/main/java/com/baeldung/concurrent/executorservice/SubmitExample.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package com.baeldung.concurrent.executorservice;
-
-import java.util.concurrent.Callable;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
-
-public class SubmitExample {
-    public static void main(String[] args) {
-        ExecutorService executorService = Executors.newFixedThreadPool(2);
-        Callable<Integer> task = () -> {
-            int[] numbers = { 1, 2, 3, 4, 5 };
-            int sum = 0;
-            for (int num : numbers) {
-                sum += num;
-            }
-            return sum;
-        };
-        // Submit the task and obtain a Future
-        Future<Integer> result = executorService.submit(task);
-        try {
-            // Get the result
-            int sum = result.get();
-            System.out.println("Sum calculated using submit:" + sum);
-        } catch (InterruptedException | ExecutionException e) {
-            e.printStackTrace();
-        }
-        executorService.shutdown();
-    }
-}
\ No newline at end of file