diff --git a/app/src/main/java/com/example/citrusclient/viewmodels/PublicBooksViewModel.java b/app/src/main/java/com/example/citrusclient/viewmodels/PublicBooksViewModel.java
index 2819df4..4577601 100644
--- a/app/src/main/java/com/example/citrusclient/viewmodels/PublicBooksViewModel.java
+++ b/app/src/main/java/com/example/citrusclient/viewmodels/PublicBooksViewModel.java
@@ -1,6 +1,77 @@
 package com.example.citrusclient.viewmodels;
 
+import com.example.citrusclient.models.Book;
+import com.example.citrusclient.rest.PublicBooksRest;
+
+import java.util.ArrayList;
+
+import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+import retrofit2.converter.jackson.JacksonConverterFactory;
 
 public class PublicBooksViewModel extends ViewModel {
+    private final Retrofit retrofit;
+    private final PublicBooksRest publicBooksRest;
+
+    private final MutableLiveData<ArrayList<Book>> allBooksLiveData;
+    private final MutableLiveData<ArrayList<Book>> searchBooksLiveData;
+
+    public PublicBooksViewModel(){
+        retrofit = new Retrofit.Builder()
+                .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/citrus/")
+                .addConverterFactory(JacksonConverterFactory.create())
+                .build();
+        this.publicBooksRest = retrofit.create(PublicBooksRest.class);
+        this.allBooksLiveData = new MutableLiveData<>();
+        this.searchBooksLiveData = new MutableLiveData<>();
+    }
+
+    public MutableLiveData<ArrayList<Book>> getAllBooksLiveData(){
+        return this.allBooksLiveData;
+    }
+    public MutableLiveData<ArrayList<Book>> getSearchBooksLiveData(){
+        return this.searchBooksLiveData;
+    }
+
+    public void loadAllBooks(){
+        Call<ArrayList<Book>> call = publicBooksRest.getAllPublicBooks();
+
+        call.enqueue(new Callback<ArrayList<Book>>(){
+            @Override
+            public  void onResponse(Call<ArrayList<Book>> call, Response<ArrayList<Book>>response){
+                if(response.isSuccessful()){
+                    ArrayList<Book> book = response.body();
+                    allBooksLiveData.setValue(book);
+                    System.out.println(response.code());
+                }else System.out.println(response.code());
+            }
+
+            @Override
+            public void onFailure(Call<ArrayList<Book>> call, Throwable t){
+                System.out.println("NetWorkError" + t);
+            }
+        });
+    }
+    public void loadSearchBooks(String title,String accountId,int sortBy){
+        Call<ArrayList<Book>> call = publicBooksRest.searchBooksByTitleAndAccount(title,accountId,sortBy);
+        call.enqueue(new Callback<ArrayList<Book>>(){
+            @Override
+            public  void onResponse(Call<ArrayList<Book>> call, Response<ArrayList<Book>>response){
+                if(response.isSuccessful()){
+                    ArrayList<Book> book = response.body();
+                    allBooksLiveData.setValue(book);
+                    System.out.println(response.code());
+                }else System.out.println(response.code());
+            }
+
+            @Override
+            public void onFailure(Call<ArrayList<Book>> call, Throwable t){
+                System.out.println("NetWorkError" + t);
+            }
+        });
+    }
 }