Udacity Android for Beginners : Greek Localization Solution for the Just Java App. This would be saved in the res/values-el/strings.xml file.

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
    <!-- Title for the application. [CHAR LIMIT=12] -->
    <string name="app_name">Μόνο Java</string>
   
    <!-- Hint text display in the empty field for the user's name [CHAR LIMIT=20] -->
    <string name="name">Όνομα</string>
    
  <!-- Button for deducting quantity. [CHAR LIMIT=1] -->
    <string name="minus">-</string>
    
  <!-- Button for adding quantity. [CHAR LIMIT=1] -->
    <string name="plus">+</string>
    
  <!-- Button for sending order. [CHAR LIMIT=20] -->
    <string name="order">Παραγγελία</string>
    
  <!-- Quantity title. [CHAR LIMIT=20] -->
    <string name="quantity">Ποσότητα</string>
    
  <!-- Chocolate checkbox. [CHAR LIMIT=20] -->
    <string name="chocolate">Σοκολάτα</string>
    
  <!-- Whipped cream checkbox. [CHAR LIMIT=20] -->
    <string name="whipped_cream">Αφρόγαλα</string>
    
  <!-- Toppings title. [CHAR LIMIT=20] -->
    <string name="toppings">Έξτρα</string>
    
  <!-- Thank you. [CHAR LIMIT=20] -->
    <string name="thank_you">Ευχαριστούμε!</string>
    
  <!-- Min order toast message. [CHAR LIMIT=80] -->
    <string name="min_order">Δεν μπορείτε να παραγγείλετε λιγότερο από ένα καφέ!</string>
    
  <!-- Max order toast message. [CHAR LIMIT=80] -->
    <string name="max_order">Δεν μπορείτε να παραγγείλετε περισσότερους από 100 καφέδες!</string>
   
  <!--
     Name for the order summary. It will be shown in the format of "Name: Amy" where Amy is the
     user's name. [CHAR LIMIT=NONE]
   -->
    <string name="order_summary_name">Όνομα: <xliff:g id="name" example="Amy">%s</xliff:g></string>

    <!--
      Whipped cream topping for the order summary. It will be shown in the format of
      "Add whipped cream? true" or "Add whipped cream? false". [CHAR LIMIT=NONE]
    -->
    <string name="order_summary_whipped_cream">Προσθήκη αφρόγαλα; <xliff:g id="addWhippedCream" example="true">%b</xliff:g></string>

    <!--
      Chocolate topping for the order summary. It will be shown in the format of
      "Add chocolate? true" or "Add chocolate? false". [CHAR LIMIT=NONE]
    -->
    <string name="order_summary_chocolate">Προσθήκη σοκολάτας; <xliff:g id="addChocolate" example="true">%b</xliff:g></string>

    <!--
      Quantity of coffee cups for the order summary. It will be shown in the format of
      "Quantity: 2", where 2 is the number of cups ordered. [CHAR LIMIT=NONE]
    -->
    <string name="order_summary_quantity">Ποσότητα: <xliff:g id="quantity" example="2">%d</xliff:g></string>

    <!--
      Total price for the order summary. It will be shown in the format of
      "Total: $10" where $10 is the price. [CHAR LIMIT=NONE]
    -->
    <string name="order_summary_price">Σύνολο: <xliff:g id="price" example="$10">%s</xliff:g></string>
    <!--
      Subject line for the order summary email. It will be in the format of
      "Just Java order for Amy" where Amy is the user's name. [CHAR LIMIT=NONE]
    -->
    <string name="order_summary_email_subject">Παραγγελία για τον/την <xliff:g id="name" example="Amy">%s</xliff:g> από το Μόνο Java</string>
</resources>

You can find the project here: https://github.com/elisavetTriant/JustJava