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How to remove null values collections

Java remove List null element

dataList.removeAll(Collections.singleton(null));

How to remove null values collections

2. HOW TO REMOVE NULL VALUES
List<String> list = new ArrayList
                   (Arrays.asList("Java",null,"Python",null, "Ruby"));
CollectionUtils.filter(list, PredicateUtils.notNullPredicate()); 
                                                     ==> removes nulls
System.out.println(list);

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