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Thread: Sequence with linked list and Generics *2 Errors*

  1. #1
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    Sep 2012
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    Default Sequence with linked list and Generics *2 Errors*

    Hello! Ran the J-unit tests, runs 19/19 with 2 Errors located in my methods: addAll & concatenation.
    I truly appreciate the help friends!

    public void addAll(LinkedSeq<E> addend)
    		   if(addend == null)
    			   throw new NullPointerException("addend is null");
    		   ********tail.setLink(addend.head);********(Seems it originates here)
    		   //addend.head = this.tail;
    		   tail = addend.tail;
    		   //addend.tail = this.tail;
    		   addend.cursor = null;
    		   manyNodes += addend.manyNodes;
    		   addend.tail = tail; 
    		   //if(addend.tail.getLink() != null)
    			  // addend.tail = addend.tail.getLink();

    And here's the second method

    public static <E> LinkedSeq<E> concatenation(LinkedSeq<E> s1, LinkedSeq<E> s2)
    		   if((s1 == null) || (s2 == null))
    			   throw new IllegalArgumentException ("concatenation:  one argument is null");
    		   LinkedSeq<E> answer = new LinkedSeq<E>();
    	       ****************answer.addAll(s1);*****************(Other trace)
    	       return answer;

  2. #2
    Administrator copeg's Avatar
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    Default Re: Sequence with linked list and Generics *2 Errors*

    Duplicate of http://www.javaprogrammingforums.com...2-errors*.html
    Thread locked

  3. The Following User Says Thank You to copeg For This Useful Post:

    Eriosblood (November 5th, 2012)

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