[BAEL-7073] change location of code

core-java-modules/core-java-concurrency-basic-3/src/main/java/com/baeldung/concurrent/executorservice/ExecuteExample.java

@@ -0,0 +1,24 @@
+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();
+
+    }
+
+}

core-java-modules/core-java-concurrency-basic-3/src/main/java/com/baeldung/concurrent/executorservice/SubmitExample.java

@@ -0,0 +1,31 @@
+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();
+    }
+}