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Thread: Append a string to Vector element

  1. #1
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    Default Append a string to Vector element

    Hi again, I don't find any method that append my string to the vector element.
    	Vector<String> v = new Vector<String>();
     
    	...
     
    	for(int i=0; i<v.size() ;i++)
    		v.elementAt(i).concat(" hello");
    This just return the v.elementAt(i) with " hello" at the end. but doesn't modify the element. So i should asignate the returned string to other variable .

    I can't do this asignation: v.elementAt(i) = v.elementAt(i).concat(" hello");

    Imagine all v.elements has 1234 already. Now I want to concat this (I want this output):
    v.elementAt(0) = "1234 hello"
    v.elementAt(1) = "1234 hello"
    v.elementAt(2) = "1234 hello"

    but I only get
    v.elementAt(0) = "1234"
    or
    v.elementAt(0) = " hello"
    If I use this i get replaced 1234 for hello, instead append it
    	for(int i=0; i<v.size() ;i++)
    		v.add(i, "hello");


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Append a string to Vector element

    The Vector class has other methods that may be useful to get and set its contents.
    If you don't understand my answer, don't ignore it, ask a question.

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

    Rexshine (February 3rd, 2013)

  4. #3
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    Default Re: Append a string to Vector element

    Hehe I'm lucky I know a bit about setter and getter , otherwise I could not understand you .
    Didn't expect that I could do this.

    Thank you-

    SOLVED:
    for(int i=0; i<v.size() ;i++){
    		 	v.set(i, v.get(i)+" hello");
    			System.out.println(v.elementAt(i));
    		}

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