Don't merge this, I'm just testing out some stuff

.gitignore

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+# ignore build artifacts in target/ directory
+target/
+# ignore IDE config file
+.idea/

src/main/java/com/googlesps/feedon/data/Donation.java

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+// Class for donation offer made by restaurant
+package com.googlesps.data;
+
+import java.util.Date;
+import javax.annotation.Nullable;
+
+public final class Donation {
+    private final long id;
+    private final String restaurantName;
+    private final String location;
+    private final String category;
+    private final String pickUpTime;
+    private final String quantity;
+    private final String specialInstructions;
+    private final String imageURL; 
+    private final Date timestamp;
+
+    public Donation(long id, 
+    String restaurantName, 
+    String location, 
+    String category, 
+    String pickUpTime, 
+    String quantity, 
+    String specialInstructions,
+    String imageURL, 
+    Date timestamp) {
+        this.id = id;
+        this.restaurantName = restaurantName;
+        this.location = location;
+        this.category = category;
+        this.pickUpTime = pickUpTime;
+        this.quantity = quantity;
+        this.specialInstructions = specialInstructions;
+        this.imageURL = imageURL;
+        this.timestamp = timestamp;
+    }
+}

src/main/java/com/googlesps/feedon/servlets/BlobstoreUploadURLServlet.java

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+package com.googlesps.feedon.servlets;
+
+import com.google.appengine.api.blobstore.BlobstoreService;
+import com.google.appengine.api.blobstore.BlobstoreServiceFactory;
+import java.io.IOException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * When the fetch() function requests the /blobstore-upload-url URL, the content of the response is
+ * the URL that allows a user to upload a file to Blobstore. 
+ */
+@WebServlet("/blobstore-upload-url")
+public class BlobstoreUploadURLServlet extends HttpServlet {
+
+  private static final String JSON_CONTENT_TYPE = "application/json";
+
+  @Override
+  public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
+    BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService();
+    String uploadUrl = blobstoreService.createUploadUrl("/donation-offer");
+
+    response.setContentType(JSON_CONTENT_TYPE);
+    response.getWriter().println(uploadUrl);
+  }
+}