diff --git a/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java b/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
index d6b03a5..d30d202 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
@@ -3,93 +3,91 @@
 import android.app.Application;
 import android.content.SharedPreferences;
 
-import org.ntlab.acanthus_client.entities.Account;
-
 //-----------------------------------------------------------------
 // ユーザーアカウント
 public class Acanthus extends Application {
-    private Integer uid;
-    private String name;
-    private String email;
-    private String password;
-    private String token;
+    private Integer preferenceUid;
+    private String preferenceName;
+    private String preferenceEmail;
+    private String preferencePassword;
+    private String preferenceToken;
 
     //-----------------------------------------------------------------
     // setter
-    public Integer getUid(){
-        if(uid == null){
+    public Integer getPreferenceUid(){
+        if(preferenceUid == null){
             SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
-            uid = preferences.getInt("uid", 0);
+            preferenceUid = preferences.getInt("uid", 0);
         }
-        return uid;
+        return preferenceUid;
     }
 
-    public String getName() {
-        if(name == null){
+    public String getPreferenceName() {
+        if(preferenceName == null){
             SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
-            name = preferences.getString("name", "");
+            preferenceName = preferences.getString("name", "");
         }
-        return name;
+        return preferenceName;
     }
 
-    public String getEmail() {
-        if(email == null){
+    public String getPreferenceEmail() {
+        if(preferenceEmail == null){
             SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
-            email = preferences.getString("email", "");
+            preferenceEmail = preferences.getString("email", "");
         }
-        return email;
+        return preferenceEmail;
     }
 
-    public String getPassword() {
-        if(password == null){
+    public String getPreferencePassword() {
+        if(preferencePassword == null){
             SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
-            password = preferences.getString("password", "");
+            preferencePassword = preferences.getString("password", "");
         }
-        return password;
+        return preferencePassword;
     }
 
-    public String getToken() {
-        if(token == null){
+    public String getPreferenceToken() {
+        if(preferenceToken == null){
             SharedPreferences preferences = getSharedPreferences("prefData",MODE_PRIVATE);
-            token = preferences.getString("token", "");
+            preferenceToken = preferences.getString("token", "");
         }
-        return token;
+        return preferenceToken;
     }
 
     //-----------------------------------------------------------------
     // setter
-    public void setUid(Integer uid){
+    public void setPreferenceUid(Integer preferenceUid){
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
-        editor.putInt("uid", uid);
+        editor.putInt("uid", preferenceUid);
         editor.commit();
     }
 
-    public void setName(String name){
+    public void setPreferenceName(String preferenceName){
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
-        editor.putString("name", name);
+        editor.putString("name", preferenceName);
         editor.commit();
     }
 
-    public void setEmail(String email) {
+    public void setPreferenceEmail(String preferenceEmail) {
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
-        editor.putString("email", email);
+        editor.putString("email", preferenceEmail);
         editor.commit();
     }
 
-    public void setPassword(String password){
+    public void setPreferencePassword(String preferencePassword){
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
-        editor.putString("password", password);
+        editor.putString("password", preferencePassword);
         editor.commit();
     }
 
-    public void setToken(String token){
+    public void setPreferenceToken(String preferenceToken){
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
-        editor.putString("token", token);
+        editor.putString("token", preferenceToken);
         editor.commit();
     }