public class CollectionUtil extends Object
| Modifier and Type | Method and Description |
|---|---|
static boolean |
isEmpty(Collection<?> col) |
static boolean |
isEmpty(Map<?,?> map) |
static boolean |
isEmpty(Object[] arrays) |
static boolean |
isNonEmpty(Collection<?> col) |
static boolean |
isNonEmpty(Map<?,?> map) |
static boolean |
isNonEmpty(Object[] arrays) |
static List<String> |
toLowerCaseList(List<String> list) |
static Set<String> |
toLowerCaseSet(Set<String> set) |
static <T> Collection<T> |
unmodifiableCollection(Collection<? extends T> col) |
static <T> List<T> |
unmodifiableList(List<? extends T> list) |
static <K,V> Map<K,V> |
unmodifiableMap(Map<? extends K,? extends V> map) |
static <T> Set<T> |
unmodifiableSet(Set<? extends T> set) |
public static boolean isEmpty(Collection<?> col)
public static boolean isEmpty(Object[] arrays)
public static boolean isEmpty(Map<?,?> map)
public static boolean isNonEmpty(Collection<?> col)
public static boolean isNonEmpty(Object[] arrays)
public static boolean isNonEmpty(Map<?,?> map)
public static <T> Collection<T> unmodifiableCollection(Collection<? extends T> col)
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