JavaCourse00
diff --git a/‎03concurrency/0301/src/main/java/java0/conc0303/Homework03.java‎
Lines changed: 28 additions & 5 deletions b/‎03concurrency/0301/src/main/java/java0/conc0303/Homework03.java‎
Lines changed: 28 additions & 5 deletions
@@ -1,5 +1,8 @@
 package java0.conc0303;
 
+import java.util.Random;
+import java.util.concurrent.*;
+
 /**
  * 本周作业：（必做）思考有多少种方式，在main函数启动一个新线程或线程池，
  * 异步运行一个方法，拿到这个方法的返回值后，退出主线程？
@@ -9,17 +12,37 @@
  */
 public class Homework03 {
 
-    public static void main(String[] args) {
+    public static void main(String[] args) throws ExecutionException, InterruptedException {
 
         long start=System.currentTimeMillis();
         // 在这里创建一个线程或线程池，
         // 异步执行 下面方法
-        
-        int result = sum(); //这是得到的返回值
-        
+        int result = CompletableFuture.supplyAsync(()-> {
+            System.out.println("1.CompletableFuture");
+            return sum();
+        }).join();;
         // 确保  拿到result 并输出
         System.out.println("异步计算结果为："+result);
-         
+        FutureTask<Integer> task = new FutureTask<Integer>(new Callable<Integer>() {
+            @Override
+            public Integer call() throws Exception {
+                System.out.println("2.FutureTask");
+                return sum();
+            }
+        });
+        new Thread(task).start();
+        System.out.println("异步计算结果为："+task.get());
+        ExecutorService executor = Executors.newSingleThreadExecutor();
+        Future<Integer> fresult = executor.submit(new Callable<Integer>() {
+            public Integer call() throws Exception {
+                System.out.println("3.Future");
+                return sum();
+            }
+        });
+        executor.shutdown();
+        System.out.println("异步计算结果为："+fresult.get());
+
+
         System.out.println("使用时间："+ (System.currentTimeMillis()-start) + " ms");
 
         // 然后退出main线程