[java] String method cannot be found in a main class method

I have about a one year experience programming Java, I made a static method located in the main class, and for some reason, whenever I compile it gives me an error saying that the compareTo() method from the String class can't be found.

Here's the method:

 public static void displaySpecificResort(String resortName, Resort[] resortList)     {      int low = 0;      int high = resortList.length - 1;      int mid;      while (low <= high)      {         mid = low + (high - low);         if (resortList[mid].compareTo(resortName)<0)             low = mid + 1;         else if (resortList[mid].compareTo(resortName)>0)             high = mid - 1;               else resortList[mid].display();       }      if(resortList[mid].getName().compareTo(resortName)!= 0)         System.out.println("Resort could not be found.");   } 

Here's the error it gives me when I try and compile:

ResortOrganizer.java:157: error: cannot find symbol         if (resortList[mid].compareTo(resortName)<0)                             ^ 

symbol: method compareTo(String) location: class Resort

ResortOrganizer.java:159: error: cannot find symbol         else if (resortList[mid].compareTo(resortName)>0)                                  ^ 

symbol: method compareTo(String) location: class Resort

2 errors

Can someone explain why it does this? I have a feeling I'm forgetting something important.