com.github.housepower.misc

Class CollectionUtil

java.lang.Object

com.github.housepower.misc.CollectionUtil

public class CollectionUtil
extends Object

Constructor Summary

Constructors

Constructor and Description
CollectionUtil()

Method Summary

Modifier and Type	Method and Description
static <T> List<T>	concat(List<T> first, List<T> second)
static <T> List<T>	concat(List<T> originList, T... elements)
static List<String>	filterIgnoreCase(List<String> set, String keyword)
static <V> Map<String,V>	filterKeyIgnoreCase(Map<String,V> map, String keyword)
static Map<String,String>	filterKeyIgnoreCase(Properties properties, String keyword)
static boolean	isNotEmpty(Collection<?> collection)
static <K,V> void	mergeMapInPlaceKeepFirst(Map<K,V> one, Map<K,V> other)
static <K,V> void	mergeMapInPlaceKeepLast(Map<K,V> one, Map<K,V> other)
static <K,V> Map<K,V>	mergeMapKeepFirst(Map<K,V> one, Map<K,V> other)
static <K,V> Map<K,V>	mergeMapKeepLast(Map<K,V> one, Map<K,V> other)
static <T> List<T>	repeat(int time, List<T> origin)

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionUtil

public CollectionUtil()

Method Detail

concat

public static <T> List<T> concat(List<T> first,
                                 List<T> second)

concat

@SafeVarargs
public static <T> List<T> concat(List<T> originList,
                                               T... elements)

repeat

public static <T> List<T> repeat(int time,
                                 List<T> origin)

filterIgnoreCase

public static List<String> filterIgnoreCase(List<String> set,
                                            String keyword)

filterKeyIgnoreCase

public static Map<String,String> filterKeyIgnoreCase(Properties properties,
                                                     String keyword)

filterKeyIgnoreCase

public static <V> Map<String,V> filterKeyIgnoreCase(Map<String,V> map,
                                                    String keyword)

mergeMapKeepFirst

public static <K,V> Map<K,V> mergeMapKeepFirst(Map<K,V> one,
                                               Map<K,V> other)

mergeMapKeepLast

public static <K,V> Map<K,V> mergeMapKeepLast(Map<K,V> one,
                                              Map<K,V> other)

mergeMapInPlaceKeepFirst

public static <K,V> void mergeMapInPlaceKeepFirst(Map<K,V> one,
                                                  @Nullable
                                                  Map<K,V> other)

mergeMapInPlaceKeepLast

public static <K,V> void mergeMapInPlaceKeepLast(Map<K,V> one,
                                                 @Nullable
                                                 Map<K,V> other)

isNotEmpty

public static boolean isNotEmpty(Collection<?> collection)