@@ -0,0 +1,53 @@
+package org.javacore.thread;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Created by BYSocket on 2015/11/2.
+ *
+ * Copyright [2015] [Jeff Lee]
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @author Jeff Lee
+ * @since 2015-11-3 18:09:06
+ * 	Daemon后台线程的简单使用
+ */
+public class SimpleDaemons implements Runnable{
+    @Override
+    public void run() {
+        try {
+            while (true){
+                TimeUnit.MICROSECONDS.sleep(1000);
+                System.out.println(Thread.currentThread() + " " + this);
+            }
+        } catch (InterruptedException e) {
+            System.out.println("sleep() interrupted");
+        }
+    }
+
+    // main是非后台线程
+    public static void main(String[] args) throws InterruptedException {
+        for (int i = 0 ; i < 10 ; i++){
+            // 创建一个新线程
+            Thread daemon = new Thread(new SimpleDaemons());
+            // 设置为后台线程
+            daemon.setDaemon(true);
+            daemon.start();
+        }
+        System.out.println("所有任务已启动");
+        // 如果main结束，那么同时会杀死所有后台线程,多次运行你会发现，可能打印的后台线程数不定
+        TimeUnit.MICROSECONDS.sleep(175);
+    }
+}