添加设计模式的教程

byhieg · byhieg · commit 11d23bf86a59 · 2017-03-14T10:45:52.000+08:00
diff --git a/src/main/java/cn/byhieg/designpatterntutorial/singleton/SimpleSingleton.java b/src/main/java/cn/byhieg/designpatterntutorial/singleton/SimpleSingleton.java
@@ -0,0 +1,22 @@
+package cn.byhieg.designpatterntutorial.singleton;
+
+/**
+ * 该类线程不安全，是延迟加载的懒汉模式
+ * Created by shiqifeng on 2017/3/14.
+ * Mail byhieg@gmail.com
+ */
+public class SimpleSingleton {
+
+    private static SimpleSingleton simpleSingleton;
+
+    private SimpleSingleton(){
+
+    }
+
+    public static SimpleSingleton getInstance(){
+        if (simpleSingleton == null) {
+            simpleSingleton = new SimpleSingleton();
+        }
+        return simpleSingleton;
+    }
+}
