diff --git a/src/main/java/org/ntlab/acanthus_server/resources/gallery/StrokesRest.java b/src/main/java/org/ntlab/acanthus_server/resources/gallery/StrokesRest.java
index 7f2e71e..6526c61 100644
--- a/src/main/java/org/ntlab/acanthus_server/resources/gallery/StrokesRest.java
+++ b/src/main/java/org/ntlab/acanthus_server/resources/gallery/StrokesRest.java
@@ -41,8 +41,7 @@
     public Integer addPages(@PathParam("aid") Integer aid) {
         var animation = gallery.getAnimationInformation(aid);
 
-        Page page = new Page();
-        pages.add(page);
+        pages.add(new Page());
 
         return pages.size();
     }
@@ -75,8 +74,7 @@
         var animation = gallery.getAnimationInformation(aid);
 
         if (pages.get(pid).getLayers().size() < 4) {
-            Layer layer = new Layer();
-            pages.get(pid).getLayers().add(layer);
+            pages.get(pid).getLayers().add(new Layer());
         }
 
         return pages.get(pid).getLayers().size();
@@ -181,8 +179,7 @@
 
         var strokes = pages.get(pid).getLayers().get(layerNo).getStrokes();
 
-        int no = strokeNo;
-        strokes.remove(no);
+        strokes.remove((int)strokeNo);
         return "やかんの麦茶";
 //        if(animation != null) {
 //            this.Test.setStrokes(pen, color, thick);
@@ -207,8 +204,7 @@
 
         var strokes = pages.get(pid).getLayers().get(layerNo).getStrokes();
 
-        Stroke stroke = strokes.get(strokeNo); // 指定したstrokeNoのstrokesを呼び出す
-        return stroke.getPositions();          // 呼び出したstrokesの情報を返す
+        return strokes.get(strokeNo).getPositions();          // 呼び出したstrokesの情報を返す
 //        if(animation != null) {
 //            return this.positions;
 //        }else{
@@ -236,15 +232,14 @@
 
         Position position = new Position();
         position.setXY(x, y);
-        Stroke stroke = strokes.get(strokeNo); // 指定したstrokeNoのstrokesを呼び出す
-        stroke.addPosition(position);          // 呼び出したstrokesに座標を追加する
+        strokes.get(strokeNo).addPosition(position);          // 呼び出したstrokesに座標を追加する
 //        if(animation != null) {
 //            this.Position.setXY(x, y);
 //            this.positions.add(this.Position);
 //        }else{
 //            throw new WebApplicationException(401);
 //        }
-        return stroke.getPositions().size();
+        return strokes.get(strokeNo).getPositions().size();
     }
 }