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Thread: ArrayList to String/outOfBounds

  1. #1
    Member Scotty's Avatar
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    Default ArrayList to String/outOfBounds

    Hiya,

    I am trying to create a single String out of an array list.

    I am building up the code, but does anyone know why I get a arrayOutOfBounds for this

    protected ArrayList<Dice> allRounds = new ArrayList<Dice>();
    protected String[] roundInfo = new String[allRounds.size()];
     
    ....................................................................................................	
     
    public void newFin(Dice addRound) {
    			allRounds.add(addRound);
      		}
     
    		public String[] getInfoForAll) {
    			for (int i = 0; i<allRounds.size(); i++) {
    				roundInfo[i] = getInfo(allRounds.get(i));
    			}
     
    			return roundInfo;
     
    		}

    or does anyone know how to create a single String out of an array of Strings?

    Thanks,


  2. #2
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    Default Re: ArrayList to String/outOfBounds

    why do not use roundInfo.length instead of allRound.size()?? to create a single String out of an array of Strings just do astring+=array[i];

  3. #3
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    Default Re: ArrayList to String/outOfBounds

    because it is in arrayList not an array? so array.length is wrong?

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    Default Re: ArrayList to String/outOfBounds

    You are going to need to post something we can compile.

    Take a look at this and see if it will help you:

    import java.util.ArrayList;
     
    public class ArrayListString {
     
    	/**
    	 * JavaProgrammingForums.com
    	 */
        public static void main(String[] args) {
     
            ArrayList<String> al = new ArrayList<String>();
     
            // Fill ArrayList (index, String)
            al.add(0, "Java");
            al.add(1, "Programming");
            al.add(2, "Forums");
            al.add(3, ".com");
     
            // Convert ArrayList to Object array
            Object[] elements = al.toArray();
     
            String myString = "";
     
            // Print Object content
            for (int a = 0; a < elements.length; a++) {
                //System.out.println(elements[a]);
            	myString = myString + elements[a];
            }
     
            // New complete String
            System.out.println(myString);
        }
    }
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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  5. The Following User Says Thank You to JavaPF For This Useful Post:

    Scotty (February 28th, 2011)

  6. #5
    Member Scotty's Avatar
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    Default Re: ArrayList to String/outOfBounds

    Thank you!

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