How to make a collection to iterate something through?











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The below code is giving me an error for the keys of "String item:keys". It is saying that an Object cannot be converted to a String. My TA said it's because I don't have the "keys" collection that's being iterated through - it doesn't exist. This is not like the Java import.util.Collection, but the collection of keys being iterated through...I'm not sure how to create it. How and where would I create it?



public String getLongDescription()
{
String str = "You are " + description + ".n"; str+= getExitString() + ".n n"; str+= "This room contains :n";
Set keys = itemsInRoom.keySet();
for(String item : keys)
{
str+=item+":";
str+=itemsInRoom.get(item).getItemDescription() + "n";
}
return str;
}









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    up vote
    0
    down vote

    favorite












    The below code is giving me an error for the keys of "String item:keys". It is saying that an Object cannot be converted to a String. My TA said it's because I don't have the "keys" collection that's being iterated through - it doesn't exist. This is not like the Java import.util.Collection, but the collection of keys being iterated through...I'm not sure how to create it. How and where would I create it?



    public String getLongDescription()
    {
    String str = "You are " + description + ".n"; str+= getExitString() + ".n n"; str+= "This room contains :n";
    Set keys = itemsInRoom.keySet();
    for(String item : keys)
    {
    str+=item+":";
    str+=itemsInRoom.get(item).getItemDescription() + "n";
    }
    return str;
    }









    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      The below code is giving me an error for the keys of "String item:keys". It is saying that an Object cannot be converted to a String. My TA said it's because I don't have the "keys" collection that's being iterated through - it doesn't exist. This is not like the Java import.util.Collection, but the collection of keys being iterated through...I'm not sure how to create it. How and where would I create it?



      public String getLongDescription()
      {
      String str = "You are " + description + ".n"; str+= getExitString() + ".n n"; str+= "This room contains :n";
      Set keys = itemsInRoom.keySet();
      for(String item : keys)
      {
      str+=item+":";
      str+=itemsInRoom.get(item).getItemDescription() + "n";
      }
      return str;
      }









      share|improve this question















      The below code is giving me an error for the keys of "String item:keys". It is saying that an Object cannot be converted to a String. My TA said it's because I don't have the "keys" collection that's being iterated through - it doesn't exist. This is not like the Java import.util.Collection, but the collection of keys being iterated through...I'm not sure how to create it. How and where would I create it?



      public String getLongDescription()
      {
      String str = "You are " + description + ".n"; str+= getExitString() + ".n n"; str+= "This room contains :n";
      Set keys = itemsInRoom.keySet();
      for(String item : keys)
      {
      str+=item+":";
      str+=itemsInRoom.get(item).getItemDescription() + "n";
      }
      return str;
      }






      bluej






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      edited Nov 18 at 9:54









      dmcgrandle

      808215




      808215










      asked Nov 18 at 2:07









      zonk

      11




      11





























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