单利模式 饿汉

.idea/workspace.xml

@@ -2,8 +2,8 @@
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-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/pattern/PatternApplication.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/production/patterns/com/pattern/PatternApplication.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/com/pattern/PatternApplication.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/com/pattern/PatternApplication.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/com/pattern/SingletonPattern/SingleMain.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/com/pattern/SingletonPattern/SingleMain.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/com/pattern/SingletonPattern/materials/SingleObject.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/com/pattern/SingletonPattern/materials/HungrySingleObject.java" afterDir="false" />
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     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -152,6 +152,7 @@
       <workItem from="1634087918450" duration="3646000" />
       <workItem from="1634091679401" duration="1323000" />
       <workItem from="1634093719115" duration="14778000" />
+      <workItem from="1634115899707" duration="377000" />
     </task>
     <task id="LOCAL-00001" summary="增加策略模式案例&#10;Signed-off-by: chenjianqiang &lt;wushanxi@gmail.com&gt;">
       <created>1634096220780</created>
@@ -176,6 +177,7 @@
         </entry>
       </map>
     </option>
+    <option name="oldMeFiltersMigrated" value="true" />
   </component>
   <component name="VcsManagerConfiguration">
     <MESSAGE value="增加策略模式案例&#10;Signed-off-by: chenjianqiang &lt;wushanxi@gmail.com&gt;" />

src/com/pattern/SingletonPattern/SingleMain.java

 package com.pattern.SingletonPattern;
 
-import com.pattern.SingletonPattern.materials.SingleObject;
+import com.pattern.SingletonPattern.materials.HungrySingleObject;
 
 /**
  * @author lx
@@ -10,6 +10,6 @@ public class SingleMain {
 
     public void main() {
 
-        System.err.println(SingleObject.getInstance().getName());
+        System.err.println(HungrySingleObject.getInstance().getName());
     }
 }

src/com/pattern/SingletonPattern/materials/SingleObject.java → src/com/pattern/SingletonPattern/materials/HungrySingleObject.java

 package com.pattern.SingletonPattern.materials;
 
 /**
- * 饿汉式
+ * 饿汉式  ：  东西已经生成好了，谁要用谁拿走
  *
  * @author lx
  * @date 2021/10/13 16:50
  **/
-public class SingleObject {
+public class HungrySingleObject {
 
-    private static final SingleObject SINGLE_OBJECT = new SingleObject();
+    private static final HungrySingleObject SINGLE_OBJECT = new HungrySingleObject();
 
-    private SingleObject() {
+    private HungrySingleObject() {
     }
 
-    public static SingleObject getInstance() {
+    public static HungrySingleObject getInstance() {
         return SINGLE_OBJECT;
     }