How to avoid ConcurrentModificationException when removing from collection

Question

I'm having problem with my delete command of my array list while I'm iterating it. How can I resolve the ConcurrentModificationException?

protected void deleteModeOfPayment(List<List<String>> AllModeOfPayment) {
    int ctr=0;
    List<String> thePayments =new ArrayList<String>();
    Iterator<List<String>> ia=allModeOfPayment.iterator();
    while(ia.hasNext()){
        thePayments=ia.next();
        String refOne= thePayments.get(1).toString().trim();
        if(refOne.equals(referenceIdentity)){
            log.d("ALVIN","ITEM TO BE DELETE FOUND");
            allModeOfPayment.remove(ctr);
        }
        else{
            ctr++;
            log.d("ALVIN","ITEM TO BE DELETE NOT FOUND");}
        }
    }
}

remove doesn't need a parameter. and it should be ia.remove(); — Alex - GlassEditor.com, Jan 21 '14 at 03:13
A) Please use proper variable names. Variables in Java are *not* uppercase B) it's doing exactly what the docs tell you it will do. Use the iterator's `remove()` method. — Brian Roach, Jan 21 '14 at 03:19
yes thats right the answer was ia.remove(); actually i was doing it by locating to my array list. and by your help guys ia.remove(); is the correct answer to my operation. — DreamBigAlvin, Jan 21 '14 at 03:27

score 1 · Accepted Answer · answered Jan 21 '14 at 03:24

1

Use iterator to remove the element-

ia.remove();

answered Jan 21 '14 at 03:24

Sudhanshu Umalkar

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How to avoid ConcurrentModificationException when removing from collection

1 Answers1