adding entities

app/src/main/java/com/example/yourcashiertest/daos/ProductDao.java

 package com.example.yourcashiertest.daos;
 
 public interface ProductDao {
+
 }

app/src/main/java/com/example/yourcashiertest/databases/LocalDatabase.java

 package com.example.yourcashiertest.databases;
 
 public class LocalDatabase {
+
+
 }

app/src/main/java/com/example/yourcashiertest/entities/Product.java

 package com.example.yourcashiertest.entities;
 
-public class Product {
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.room.PrimaryKey;
+
+public class Product implements Parcelable {
+    @PrimaryKey(autoGenerate = true)
+    private long id;
+
+    private long price, quantity;
+    private String photo = "", name = "", description = "", category = "";
+
+    public Product(long price, long quantity, String photo, String name, String description, String category) {
+        this.price = price;
+        this.quantity = quantity;
+        this.photo = photo;
+        this.name = name;
+        this.description = description;
+        this.category = category;
+    }
+
+
+    protected Product(Parcel in) {
+        id = in.readLong();
+        price = in.readLong();
+        quantity = in.readLong();
+        photo = in.readString();
+        name = in.readString();
+        description = in.readString();
+        category = in.readString();
+    }
+
+    public static final Creator<Product> CREATOR = new Creator<Product>() {
+        @Override
+        public Product createFromParcel(Parcel in) {
+            return new Product(in);
+        }
+
+        @Override
+        public Product[] newArray(int size) {
+            return new Product[size];
+        }
+    };
+
+    public long getPrice() {
+        return price;
+    }
+
+    public void setPrice(long price) {
+        this.price = price;
+    }
+
+    public long getQuantity() {
+        return quantity;
+    }
+
+    public void setQuantity(long quantity) {
+        this.quantity = quantity;
+    }
+
+    public String getPhoto() {
+        return photo;
+    }
+
+    public void setPhoto(String photo) {
+        this.photo = photo;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel parcel, int i) {
+        parcel.writeLong(id);
+        parcel.writeLong(price);
+        parcel.writeLong(quantity);
+        parcel.writeString(photo);
+        parcel.writeString(name);
+        parcel.writeString(description);
+        parcel.writeString(category);
+    }
 }