diff --git a/.idea/misc.xml b/.idea/misc.xml
index 37a7509..dfd2c79 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="JDK" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/src/main/java/org/ntlab/amaryllis/client/VoiceActivity.java b/app/src/main/java/org/ntlab/amaryllis/client/VoiceActivity.java
index 68703ee..974daa0 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/VoiceActivity.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/VoiceActivity.java
@@ -79,7 +79,7 @@
         mp = new MediaPlayer();
 
 
-
+        //録音開始ボタン
         Button Record = (Button)findViewById(R.id.button);
         Record.setOnClickListener(new View.OnClickListener(){
             public void onClick(View x){
@@ -90,6 +90,7 @@
             }
         });
 
+        //再生開始ボタン
         Button Playback = (Button)findViewById(R.id.button2);
         Playback.setOnClickListener(new View.OnClickListener(){
             public void onClick(View x){
@@ -116,6 +117,7 @@
         //mp = new MediaPlayer();
         //mp = MediaPlayer.create(this,R.raw.bgm);
 
+        //再生中にボタンを押した時の処理（再生停止をする）
         if(mp.isPlaying()){
             TextView textView1 = (TextView)findViewById(R.id.Notice);
             textView1.setText("Playback Stop!");
@@ -133,6 +135,8 @@
             //}catch(IOException e){
             //e.printStackTrace();
             //}
+
+        //停止中にボタンを押した時の処理（再生をスタートする）
         }else {
             try {
                 //mp = new MediaPlayer();
@@ -202,6 +206,7 @@
     //録音開始&録音終了
     private void startRecord(){
 
+        //録音中にボタンを押した時の処理（録音を終える）
         if(StartChange == 0) {
             try {
                 in = new FileInputStream(file);
@@ -219,6 +224,8 @@
             } catch (Exception e) {
                 e.printStackTrace();
             }
+
+        //録音停止中にボタンを押した時の処理（録音をスタートする）
         }else {
             try {
                 TextView textView1 = (TextView)findViewById(R.id.Notice);