Java Utililty Methods Collection Empty

List of utility methods to do Collection Empty

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Description

The list of methods to do Collection Empty are organized into topic(s).

Method

booleannullOrEmpty(Collection c)
Indicates whether a collection is null or empty. 
return null == c || c.isEmpty();
booleannullOrEmpty(final Collection in)
null Or Empty 
if ((in == null) || (in.isEmpty())) {
    return true;
return false;
CollectionnullOrEmptyToDefault(final Collection collection, final Collection defaultValue)
Returns the given collection or the given default collection if the collection is null or empty 
if (collection == null || collection.isEmpty()) {
    return defaultValue;
return collection;
CollectionnullToEmpty(Collection c)
Returns either c or an empty collection if c is null . 
return (c == null ? (Collection<T>) Collections.emptyList() : c);
CollectionnullToEmpty(Collection coll)
null To Empty 
return coll == null ? Collections.EMPTY_LIST : coll;
CollectionorEmpty(T collection)
or Empty 
return (collection == null ? (Collection<V>) Collections.emptyList() : collection);
String[]removeEmptyStrings(Collection data)

Remove empty strings from a collection. 

List<String> result = new ArrayList<>();
for (String element : data) {
    if (element == null || element.isEmpty()) {
        continue;
    result.add(element);
return result.toArray(new String[result.size()]);
...
booleansafeIsEmpty(Collection collection)
safe Is Empty 
return collection == null || collection.isEmpty();