title: want to create a map<String , Object> ,Object can be String and can be class Object
body: <p>How want to create a <code>Map&lt;String , Object&gt;</code>. </p>
  
  <p>In this map everytime the Object is a string. But Now I want to put a class in the object in addition to that. Is this a  good way to mix string and a class object? If yes, when I iterate through the map, how can I distiguish between class and string?</p>