Question

Say you want to filter elements out of a List. Running this code triggers something like a concurrency exception as the list is being modified during the loop:

List<String> aList = new ArrayList<String>();

// Add instances to list here ...

for( String s : aList ){
    if( "apple".equals( s ) ){ // Criteria
        aList.remove(s);
    }
}

What is the conventional way of doing this and what other approaches do you know of?

Answer 1

best way is to use iterator.remove()