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POError while removing array element
 

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  1. POError while removing array element
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    <p>I have new arraylist, 1 arraylist which has 10 customer already inserted. I'm running a loop which picks a random customer from the arraylist and adds it into the 2nd arraylist. However, I'm getting duplicates when I insert customer into the 2nd arraylist. So when the loop runs after adding the customer into the 2nd arraylist it will remove it from the 1st arraylist.</p> <p>However, when it runs I get an error: <code>Intervals error: java.lang.IndexOutOfBoundsException: Index: 7, Size: 7</code></p> <pre><code>ArrayList&lt;String&gt; customer = new ArrayList&lt;String&gt;(Arrays.asList(list)); int customerlist = customer.size(); while (line.isEmpty()) { for (int x = 0; x &lt; customerlist; x++ ) { try { Thread.sleep(intervals * 1000); //Sleep method to hold the arrival time by 1-2 seconds. int cus = (int) (Math.random() * customerlist); //Random customer is picked here. String new_cus = customer.get(cus); //New customer object is created ere. line.add(new_cus); //Customer objects are added to the empty LinkedList queue. customer.remove(cus); //For loop statement to outputting the queue. for (String s : line) { System.out.print("[" + s.toString() + " " + "]"); //Outputting each customer and using the ".name" method so customers are readable. } //Outputting the whole queue and stating who has joined the queue. System.out.println("\n" + "The queue has " + line.size() + " customers so far" + "\n" + new_cus.toString() + " Has Joined the Queue " + " &lt;=== WAITING" + "\n"); } catch(Exception e) //ERROR handler for sleep method. { System.out.println("Intervals error: " + e); //Outputting the ERROR message. System.exit(0); //If ERROR found exit system. } } } </code></pre>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USGeorge Cummins
    1. USuser1898552
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    2. PO
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    3. PO
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    1. This table or related slice is empty.
    1. COTry flooring the value of `cus`.
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      1. POError while removing array element
      1. USBucket
    2. COAre you just trying to put the given customers into a list in a random order?
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      1. POError while removing array element
      1. USRob Watts
    3. COBasically im trying to remove duplicate customer being added into my 2nd arraylist, but I need the customer to be randomly picked in the first place.
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      1. POError while removing array element
      1. USuser1898552
 

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