Create OrderJsonParser.java

chapter12/src/main/java/org/agoncal/book/javaee7/chapter12/ex05/OrderJsonParser.java

@@ -0,0 +1,35 @@
+package org.agoncal.book.javaee7.chapter12;
+
+import javax.json.Json;
+import javax.json.stream.JsonParser;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+
+/**
+* @author Antonio Goncalves
+* APress Book - Beginning Java EE 7 with Glassfish 4
+* http://www.apress.com/
+* http://www.antoniogoncalves.org
+* --
+*/
+public class OrderJsonParser {
+    public static void main(String[] args) {
+        try {
+            JsonParser parser = Json.createParser(new FileReader("order.json"));
+            while (parser.hasNext()) {
+                JsonParser.Event event = parser.next();
+                while (parser.hasNext() && !(event.equals(JsonParser.Event.KEY_NAME) && parser.getString().matches("email"))) {
+                    event = parser.next();
+                }
+
+                if (event.equals(JsonParser.Event.KEY_NAME) && parser.getString().matches("email")) {
+                    parser.next();
+                    String email = parser.getString();
+                    //Email a welcome message to the email address asynchronously
+                }
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+}