Package org.xipki.util

Class CollectionUtil

java.lang.Object

org.xipki.util.CollectionUtil

public class CollectionUtil
extends Object

Utility class for operations on Collection, Set, List, Map, and arrays.

Since:

2.0.0

Author:

Lijun Liao (xipki)

Method Summary

Modifier and Type	Method	Description
static <T> Set<T>	asSet(T... list)
static <T> Set<T>	asUnmodifiableSet(T... list)
static boolean	isEmpty(Object[] arrays)
static boolean	isEmpty(Collection<?> col)
static boolean	isEmpty(Map<?,?> map)
static boolean	isNonEmpty(Object[] arrays)	Deprecated.
static boolean	isNonEmpty(Collection<?> col)	Deprecated.
static boolean	isNonEmpty(Map<?,?> map)	Deprecated.
static boolean	isNotEmpty(Object[] arrays)
static boolean	isNotEmpty(Collection<?> col)
static boolean	isNotEmpty(Map<?,?> map)
static <T> Set<T>	listToSet(List<? extends T> list)
static <T extends Comparable<? super T>> List<T>	sort(Collection<T> col)
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)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isEmpty

public static boolean isEmpty(Collection<?> col)

isEmpty

public static boolean isEmpty(Object[] arrays)

isEmpty

public static boolean isEmpty(Map<?,?> map)

isNotEmpty

public static boolean isNotEmpty(Collection<?> col)

isNotEmpty

public static boolean isNotEmpty(Object[] arrays)

isNotEmpty

public static boolean isNotEmpty(Map<?,?> map)

isNonEmpty

@Deprecated
public static boolean isNonEmpty(Collection<?> col)

Deprecated.

isNonEmpty

@Deprecated
public static boolean isNonEmpty(Object[] arrays)

Deprecated.

isNonEmpty

@Deprecated
public static boolean isNonEmpty(Map<?,?> map)

Deprecated.

unmodifiableMap

public static <K,V> Map<K,V> unmodifiableMap(Map<? extends K,? extends V> map)

toLowerCaseList

public static List<String> toLowerCaseList(List<String> list)

toLowerCaseSet

public static Set<String> toLowerCaseSet(Set<String> set)

unmodifiableSet

public static <T> Set<T> unmodifiableSet(Set<? extends T> set)

unmodifiableCollection

public static <T> Collection<T> unmodifiableCollection(Collection<? extends T> col)

unmodifiableList

public static <T> List<T> unmodifiableList(List<? extends T> list)

asUnmodifiableSet

public static <T> Set<T> asUnmodifiableSet(T... list)

asSet

public static <T> Set<T> asSet(T... list)

listToSet

public static <T> Set<T> listToSet(List<? extends T> list)

sort

public static <T extends Comparable<? super T>> List<T> sort(Collection<T> col)