java8 : CompletableFuture

java8to11/src/completableFuture/App.java

@@ -0,0 +1,78 @@
+package completableFuture;
+
+public class App {
+    public static void main(String[] args) throws InterruptedException {
+
+        /**
+         * Thread 사용
+         */
+
+        // join
+        Thread thread = new Thread(() -> {
+            System.out.println("Thread: " + Thread.currentThread().getName());
+            try {
+                Thread.sleep(3000L);
+            } catch (InterruptedException e) {
+                throw new IllegalStateException(e);
+            }
+        });
+        thread.start();
+
+        System.out.println("Hello: " + Thread.currentThread().getName());
+        thread.join();
+        System.out.println(thread + " is finished");
+
+
+//        // interrupt
+//        Thread thread = new Thread(() -> {
+//            while (true) {
+//                System.out.println("Thread: " + Thread.currentThread().getName());
+//                try {
+//                    Thread.sleep(1000L);
+//                } catch (InterruptedException e) {
+//                    System.out.println("exit!");
+//                    return;
+//                }
+//            }
+//        });
+//        thread.start();
+//        System.out.println("Hello: " + Thread.currentThread().getName());
+//        Thread.sleep(3000L);
+//        thread.interrupt();
+
+//        // sleep
+//        Thread thread = new Thread(() -> {
+//            try {
+//                Thread.sleep(1000L);
+//            } catch (InterruptedException e) {
+//                e.printStackTrace();
+//            }
+//            System.out.println("Thread: " + Thread.currentThread().getName());
+//        });
+//        thread.start();
+//        System.out.println("Hello: " + Thread.currentThread().getName());
+
+//        // 람다 사용
+//        Thread thread = new Thread(() -> {
+//            System.out.println("Thread: " + Thread.currentThread().getName());
+//        });
+//        thread.start();
+//        System.out.println("Hello: " + Thread.currentThread().getName());
+
+//        // 익명 클래스 사용
+//        Thread thread = new Thread(new Runnable() {
+//            @Override
+//            public void run() {
+//                System.out.println("Thread: " + Thread.currentThread().getName());
+//            }
+//        });
+//        thread.start();
+//        System.out.println("Hello: " + Thread.currentThread().getName());
+
+//        // Thread 상속해서 사용
+//        MyThread myThread = new MyThread();
+//        myThread.start();
+//
+//        System.out.println("Hello: " + Thread.currentThread().getName());
+    }
+}

java8to11/src/completableFuture/MyThread.java

@@ -0,0 +1,9 @@
+package completableFuture;
+
+public class MyThread extends Thread{
+
+    @Override
+    public void run() {
+        System.out.println("Thread: " + Thread.currentThread().getName());
+    }
+}