c

src/src/Main.java

@@ -0,0 +1,28 @@
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executors;
+
+public class Main {
+    public static void main(String... args) {
+        var executor = Executors.newCachedThreadPool();
+        Callable<Integer> c = new Callable<>() {
+            public Integer call() {
+                return 1 + 2;
+            }
+        };
+        var f1 = executor.submit(c);
+        var f2 = executor.submit(() -> {
+            return 3 + 4;
+        });
+
+        var f3 = executor.submit(() -> f1.get() + f2.get());
+
+        try {
+            System.out.printf("Res: %d \n", f3.get());
+        } catch (ExecutionException | InterruptedException e) {
+            Thread.currentThread().interrupt();
+        } finally {
+            executor.shutdown();
+        }
+    }
+}