diff --git a/src/main/java/com/example/jerseyexercise/resources/Yyoshimura.java b/src/main/java/com/example/jerseyexercise/resources/Yyoshimura.java
new file mode 100644
index 0000000..2e18245
--- /dev/null
+++ b/src/main/java/com/example/jerseyexercise/resources/Yyoshimura.java
@@ -0,0 +1,60 @@
+package com.example.jerseyexercise.resources;
+
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.MediaType;
+import org.springframework.stereotype.Component;
+
+import java.util.ArrayList;
+
+@Path("Yyoshimura")
+@Component
+public class Yyoshimura {
+        String name = "noname";
+        ArrayList<String> tweetList = new ArrayList<>();
+
+        @GET
+        public String getHelloWorld() {
+        return "Hello World!!";
+    }
+
+
+        @GET
+        @Path("/name")
+        public String getName() {
+        return name;
+    }
+
+        @PUT
+        @Path("/name")
+        public void setName(@FormParam("name") String newName) {
+        name = newName;
+    }
+
+        @POST
+        @Path("/tweets")
+        @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
+        public void tweet(@FormParam("tweet") String tweet){
+        tweetList.add(tweet);
+        //ArrayList;
+        //      add(x) --- リストの末尾にxを追加
+        //      get(idx) --- リストのidx番目の要素を取得
+        //      size() --- リストに入っている要素の数を取得
+        //      remove(idx) --- リストの idx 番目の要素を削除
+    }
+
+        @GET
+        @Path("/tweets")
+        @Produces(MediaType.APPLICATION_JSON)
+        public ArrayList<String> getTweets(){
+        return tweetList;
+    }
+
+        @GET
+        @Path("/tweets/{no}")
+        @FormParam(MediaType.APPLICATION_JSON)
+        public String getTweet(@PathParam("no") int n){
+        String t;
+        t = tweetList.get(n);
+        return t;
+    }
+}