com.ckjava.utils

类 ArrayUtils

java.lang.Object

org.apache.commons.lang3.ArrayUtils

com.ckjava.utils.ArrayUtils

public class ArrayUtils
extends org.apache.commons.lang3.ArrayUtils

字段概要

从类继承的字段 org.apache.commons.lang3.ArrayUtils

EMPTY_BOOLEAN_ARRAY, EMPTY_BOOLEAN_OBJECT_ARRAY, EMPTY_BYTE_ARRAY, EMPTY_BYTE_OBJECT_ARRAY, EMPTY_CHAR_ARRAY, EMPTY_CHARACTER_OBJECT_ARRAY, EMPTY_CLASS_ARRAY, EMPTY_DOUBLE_ARRAY, EMPTY_DOUBLE_OBJECT_ARRAY, EMPTY_FLOAT_ARRAY, EMPTY_FLOAT_OBJECT_ARRAY, EMPTY_INT_ARRAY, EMPTY_INTEGER_OBJECT_ARRAY, EMPTY_LONG_ARRAY, EMPTY_LONG_OBJECT_ARRAY, EMPTY_OBJECT_ARRAY, EMPTY_SHORT_ARRAY, EMPTY_SHORT_OBJECT_ARRAY, EMPTY_STRING_ARRAY, INDEX_NOT_FOUND

构造器概要

构造器

构造器和说明
ArrayUtils()

方法概要

限定符和类型	方法和说明
static <T> int	getSize(T[] arr) 获取数组的长度
static <T> T	getValue(T[] arr, int index) 根据下标从数组中获取数据
static <T> T	getValue(T[] arr, int index, T defaultValue) 根据下标从数组中获取数据，结果为空的情况下返回默认值
static <T> java.lang.String	join(T[] arr, java.lang.String separator) 将数组以分隔符 separator 为分界合并起来
static <T> T[]	merge(T[]... arrs) 将多个数组合并成一个后返回 { String[] str1 = {"1", "2"}; String[] str2 = {"3", "4"}; String[] str3 = merge(str1, str2); str3 = {"1", "2", "3", "4"} return str3 }

从类继承的方法 org.apache.commons.lang3.ArrayUtils

add, add, add, add, add, add, add, add, add, add, add, add, add, add, add, add, add, add, addAll, addAll, addAll, addAll, addAll, addAll, addAll, addAll, addAll, clone, clone, clone, clone, clone, clone, clone, clone, clone, contains, contains, contains, contains, contains, contains, contains, contains, contains, contains, getLength, hashCode, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, indexOf, isEmpty, isEmpty, isEmpty, isEmpty, isEmpty, isEmpty, isEmpty, isEmpty, isEmpty, isEquals, isNotEmpty, isNotEmpty, isNotEmpty, isNotEmpty, isNotEmpty, isNotEmpty, isNotEmpty, isNotEmpty, isNotEmpty, isSameLength, isSameLength, isSameLength, isSameLength, isSameLength, isSameLength, isSameLength, isSameLength, isSameLength, isSameType, isSorted, isSorted, isSorted, isSorted, isSorted, isSorted, isSorted, isSorted, isSorted, isSorted, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, lastIndexOf, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, nullToEmpty, remove, remove, remove, remove, remove, remove, remove, remove, remove, removeAll, removeAll, removeAll, removeAll, removeAll, removeAll, removeAll, removeAll, removeAll, removeAllOccurences, removeAllOccurences, removeAllOccurences, removeAllOccurences, removeAllOccurences, removeAllOccurences, removeAllOccurences, removeAllOccurences, removeAllOccurences, removeElement, removeElement, removeElement, removeElement, removeElement, removeElement, removeElement, removeElement, removeElement, removeElements, removeElements, removeElements, removeElements, removeElements, removeElements, removeElements, removeElements, removeElements, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, reverse, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, shift, subarray, subarray, subarray, subarray, subarray, subarray, subarray, subarray, subarray, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, swap, toArray, toMap, toObject, toObject, toObject, toObject, toObject, toObject, toObject, toObject, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toPrimitive, toString, toString

从类继承的方法 java.lang.Object

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

构造器详细资料

ArrayUtils

public ArrayUtils()

方法详细资料

getValue

public static <T> T getValue(T[] arr,
                             int index)

根据下标从数组中获取数据

类型参数:

T - 任意对象

参数:

arr - 数组

index - 下标

返回:

数组的值

getValue

public static <T> T getValue(T[] arr,
                             int index,
                             T defaultValue)

根据下标从数组中获取数据，结果为空的情况下返回默认值

类型参数:

T - 任意对象

参数:

arr - T 数组

index - 下标

defaultValue - 默认值

返回:

数组的值

getSize

public static <T> int getSize(T[] arr)

获取数组的长度

类型参数:

T - 任意对象

参数:

arr - 数组

返回:

int 数组长度

join

public static <T> java.lang.String join(T[] arr,
                                        java.lang.String separator)

将数组以分隔符 separator 为分界合并起来

类型参数:

T - 任意对象

参数:

arr - 数组

separator - 分隔符

返回:

合并后的字符串

merge

@SafeVarargs
public static <T> T[] merge(T[]... arrs)

将多个数组合并成一个后返回 { String[] str1 = {"1", "2"}; String[] str2 = {"3", "4"}; String[] str3 = merge(str1, str2); str3 = {"1", "2", "3", "4"} return str3 }

类型参数:

T - 任意对象

参数:

arrs - T的多个数组

返回:

T 的数组