diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 47b7613..977748d 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ChangeListManager">
-    <list default="true" id="8ccbe0a5-cdf8-4091-a84b-916013277899" name="Default" comment="">
+    <list default="true" id="8ccbe0a5-cdf8-4091-a84b-916013277899" name="Default" comment="补全注释">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java" afterPath="$PROJECT_DIR$/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java" />
+      <change beforePath="$PROJECT_DIR$/src/test/java/com/fjy/hadoop/HDFSApp.java" afterPath="$PROJECT_DIR$/src/test/java/com/fjy/hadoop/HDFSApp.java" />
     </list>
     <ignored path="$PROJECT_DIR$/out/" />
     <ignored path="$PROJECT_DIR$/target/" />
@@ -25,23 +27,25 @@
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="HDFSApp.java" pinned="false" current-in-tab="false">
+      <file leaf-file-name="HDFSApp.java" pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/src/test/java/com/fjy/hadoop/HDFSApp.java">
           <provider selected="true" editor-type-id="text-editor">
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-              <caret line="135" column="20" lean-forward="false" selection-start-line="135" selection-start-column="20" selection-end-line="135" selection-end-column="20" />
+            <state relative-caret-position="437">
+              <caret line="19" column="25" lean-forward="false" selection-start-line="19" selection-start-column="25" selection-end-line="19" selection-end-column="25" />
               <folding>
                 <element signature="imports" expanded="true" />
+                <element signature="e#2451#2611#0" expanded="true" />
+                <element signature="e#2610#2611#0" expanded="true" />
               </folding>
             </state>
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="WordCountApp.java" pinned="false" current-in-tab="true">
+      <file leaf-file-name="WordCountApp.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java">
           <provider selected="true" editor-type-id="text-editor">
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-              <caret line="28" column="27" lean-forward="true" selection-start-line="28" selection-start-column="27" selection-end-line="28" selection-end-column="27" />
+            <state relative-caret-position="391">
+              <caret line="17" column="19" lean-forward="false" selection-start-line="17" selection-start-column="19" selection-end-line="17" selection-end-column="19" />
               <folding>
                 <element signature="imports" expanded="true" />
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@@ -62,8 +66,8 @@
       <file leaf-file-name="AppTest.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/test/java/com/fjy/hadoop/AppTest.java">
           <provider selected="true" editor-type-id="text-editor">
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-              <caret line="9" column="13" lean-forward="false" selection-start-line="9" selection-start-column="13" selection-end-line="9" selection-end-column="13" />
+            <state relative-caret-position="115">
+              <caret line="7" column="28" lean-forward="true" selection-start-line="7" selection-start-column="28" selection-end-line="7" selection-end-column="28" />
               <folding />
             </state>
           </provider>
@@ -90,8 +94,8 @@
     <option name="CHANGED_PATHS">
       <list>
         <option value="$PROJECT_DIR$/pom.xml" />
-        <option value="$PROJECT_DIR$/src/test/java/com/fjy/hadoop/HDFSApp.java" />
         <option value="$PROJECT_DIR$/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java" />
+        <option value="$PROJECT_DIR$/src/test/java/com/fjy/hadoop/HDFSApp.java" />
       </list>
     </option>
   </component>
@@ -165,6 +169,14 @@
               <item name="main" type="462c0819:PsiDirectoryNode" />
               <item name="java" type="462c0819:PsiDirectoryNode" />
             </path>
+            <path>
+              <item name="hadoopstudy" type="b2602c69:ProjectViewProjectNode" />
+              <item name="hadoopstudy" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="main" type="462c0819:PsiDirectoryNode" />
+              <item name="java" type="462c0819:PsiDirectoryNode" />
+              <item name="mapreduce" type="462c0819:PsiDirectoryNode" />
+            </path>
             <path>
               <item name="hadoopstudy" type="b2602c69:ProjectViewProjectNode" />
               <item name="hadoopstudy" type="462c0819:PsiDirectoryNode" />
@@ -201,7 +213,7 @@
     <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="aspect.path.notification.shown" value="true" />
-    <property name="settings.editor.selected.configurable" value="reference.settings.project.maven.repository.indices" />
+    <property name="settings.editor.selected.configurable" value="fileTemplates" />
     <property name="last_opened_file_path" value="$PROJECT_DIR$/../第二章代码" />
   </component>
   <component name="RunDashboard">
@@ -463,7 +475,7 @@
       <workItem from="1523148734020" duration="6470000" />
       <workItem from="1523322335998" duration="659000" />
       <workItem from="1523606327796" duration="135000" />
-      <workItem from="1523931905005" duration="3639000" />
+      <workItem from="1523931905005" duration="4695000" />
     </task>
     <task id="LOCAL-00001" summary="建立初始工程">
       <created>1521904777876</created>
@@ -486,7 +498,14 @@
       <option name="project" value="LOCAL" />
       <updated>1523938679791</updated>
     </task>
-    <option name="localTasksCounter" value="4" />
+    <task id="LOCAL-00004" summary="单节点MapReduce开发WordCount">
+      <created>1523938722202</created>
+      <option name="number" value="00004" />
+      <option name="presentableId" value="LOCAL-00004" />
+      <option name="project" value="LOCAL" />
+      <updated>1523938722202</updated>
+    </task>
+    <option name="localTasksCounter" value="5" />
     <servers />
   </component>
   <component name="TestHistory">
@@ -522,7 +541,7 @@
     </history-entry>
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="24431000" />
+    <option name="totallyTimeSpent" value="25487000" />
   </component>
   <component name="ToolWindowManager">
     <frame x="-8" y="-8" width="1936" height="1056" extended-state="6" />
@@ -567,7 +586,9 @@
   <component name="VcsManagerConfiguration">
     <MESSAGE value="建立初始工程" />
     <MESSAGE value="JavaAPI基础操作单元测试编写并通过" />
-    <option name="LAST_COMMIT_MESSAGE" value="JavaAPI基础操作单元测试编写并通过" />
+    <MESSAGE value="单节点MapReduce开发WordCount" />
+    <MESSAGE value="补全注释" />
+    <option name="LAST_COMMIT_MESSAGE" value="补全注释" />
   </component>
   <component name="XDebuggerManager">
     <breakpoint-manager />
@@ -596,6 +617,8 @@
           <caret line="135" column="20" lean-forward="false" selection-start-line="135" selection-start-column="20" selection-end-line="135" selection-end-column="20" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
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         </state>
       </provider>
@@ -622,6 +645,8 @@
           <caret line="135" column="20" lean-forward="false" selection-start-line="135" selection-start-column="20" selection-end-line="135" selection-end-column="20" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
           </folding>
         </state>
       </provider>
@@ -648,6 +673,8 @@
           <caret line="135" column="20" lean-forward="false" selection-start-line="135" selection-start-column="20" selection-end-line="135" selection-end-column="20" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
           </folding>
         </state>
       </provider>
@@ -674,6 +701,8 @@
           <caret line="17" column="0" lean-forward="true" selection-start-line="17" selection-start-column="0" selection-end-line="17" selection-end-column="0" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
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         </state>
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@@ -692,6 +721,8 @@
           <caret line="27" column="26" lean-forward="false" selection-start-line="27" selection-start-column="26" selection-end-line="27" selection-end-column="26" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
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@@ -710,6 +741,8 @@
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           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
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@@ -728,6 +761,8 @@
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           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
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@@ -746,6 +781,8 @@
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           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
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@@ -764,6 +801,8 @@
           <caret line="16" column="68" lean-forward="false" selection-start-line="16" selection-start-column="51" selection-end-line="16" selection-end-column="68" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
           </folding>
         </state>
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@@ -782,6 +821,8 @@
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           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
           </folding>
         </state>
       </provider>
@@ -794,14 +835,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/test/java/com/fjy/hadoop/AppTest.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="161">
-          <caret line="9" column="13" lean-forward="false" selection-start-line="9" selection-start-column="13" selection-end-line="9" selection-end-column="13" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
     <entry file="jar://$MAVEN_REPOSITORY$/org/apache/hadoop/hadoop-common/2.6.0-cdh5.7.0/hadoop-common-2.6.0-cdh5.7.0.jar!/org/apache/hadoop/fs/FileSystem.class">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="455">
@@ -809,16 +842,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/test/java/com/fjy/hadoop/HDFSApp.java">
-      <provider selected="true" editor-type-id="text-editor">
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-    </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/com/fjy/hadoop/App.java">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="138">
@@ -835,16 +858,44 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/fjy/hadoop/mapreduce/Test.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="46">
+          <caret line="2" column="0" lean-forward="false" selection-start-line="2" selection-start-column="0" selection-end-line="5" selection-end-column="3" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="368">
-          <caret line="28" column="27" lean-forward="true" selection-start-line="28" selection-start-column="27" selection-end-line="28" selection-end-column="27" />
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+          <caret line="17" column="19" lean-forward="false" selection-start-line="17" selection-start-column="19" selection-end-line="17" selection-end-column="19" />
           <folding>
             <element signature="imports" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/com/fjy/hadoop/AppTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="115">
+          <caret line="7" column="28" lean-forward="true" selection-start-line="7" selection-start-column="28" selection-end-line="7" selection-end-column="28" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/com/fjy/hadoop/HDFSApp.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="437">
+          <caret line="19" column="25" lean-forward="false" selection-start-line="19" selection-start-column="25" selection-end-line="19" selection-end-column="25" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#2451#2611#0" expanded="true" />
+            <element signature="e#2610#2611#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
   </component>
   <component name="masterDetails">
     <states>
diff --git a/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java b/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java
index d25b696..937bdbf 100644
--- a/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java
+++ b/src/main/java/com/fjy/hadoop/mapreduce/WordCountApp.java
@@ -14,6 +14,8 @@ import java.io.IOException;
 
 /**
  * 使用MapReduce开发WordCount应用
+ * @author F嘉阳
+ * @date 2018-04-17
  */
 public class WordCountApp {
     /**
diff --git a/src/test/java/com/fjy/hadoop/HDFSApp.java b/src/test/java/com/fjy/hadoop/HDFSApp.java
index b165d54..686a834 100644
--- a/src/test/java/com/fjy/hadoop/HDFSApp.java
+++ b/src/test/java/com/fjy/hadoop/HDFSApp.java
@@ -16,6 +16,8 @@ import java.net.URI;
 
 /**
  * Hadoop HDFS Java API 操作
+ * @author F嘉阳
+ * @date 2018-04-17 12:49
  */
 public class HDFSApp {