title: Setter in NSString iOS
body: <p>hi i am new to ios dev ,I am trying to set a value for nsstring from delegate class and access from other class ,the value i get is null.i dont know what mistake i am doing?</p>
  
  <pre><code>//token class header file
  @interface TokenClass : NSObject
  {
      NSString *tokenValue;
  }
  @property (nonatomic,strong) NSString *tokenValue;
  
  //token class main file
  @implementation TokenClass
  @synthesize tokenValue;
  @end
  
  //App Delegate
  TokenClass *token = [[TokenClass alloc]init];
  [token setTokenValue:@"as"];
  </code></pre>
  
  <p>when i access tokenvalue in some other classs i get null value.
  can any one point me what mistake i am doing?Am i using @ property correctly?</p>