Update README.md

promise/src/main/java/com/iluwatar/promise/App.java

@@ -81,7 +81,7 @@ public class App {
    * @throws InterruptedException if main thread is interrupted.
    * @throws ExecutionException   if an execution error occurs.
    */
-  public static void main(String[] args) throws InterruptedException, ExecutionException {
+  public static void main(String[] args) throws InterruptedException {
     var app = new App();
     try {
       app.promiseUsage();

promise/src/main/java/com/iluwatar/promise/Promise.java

@@ -141,7 +141,7 @@ public class Promise<T> extends PromiseSupport<T> {
    */
   public <V> Promise<V> thenApply(Function<? super T, V> func) {
     Promise<V> dest = new Promise<>();
-    fulfillmentAction = new TransformAction<V>(this, dest, func);
+    fulfillmentAction = new TransformAction<>(this, dest, func);
     return dest;
   }
 

promise/src/main/java/com/iluwatar/promise/PromiseSupport.java

@@ -26,7 +26,6 @@ package com.iluwatar.promise;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -114,4 +113,4 @@ class PromiseSupport<T> implements Future<T> {
     }
     throw new ExecutionException(exception);
   }
-}
+}