com.hld.query.util

类 StringUtils

java.lang.Object

com.hld.query.util.StringUtils

public class StringUtils
extends Object

作者:

huald

字段概要

字段

限定符和类型	字段和说明
static String[]	EMPTY_STRING_ARRAY
static int	INDEX_NOT_FOUND

构造器概要

构造器

构造器和说明
StringUtils()

方法概要

限定符和类型	方法和说明
static String	arrayToString(String[] arr)
static String	camel2UnderLine(String camelStr) 驼峰转下划线
static boolean	isBlank(String str) Checks if a String is whitespace, empty ("") or null.
static boolean	isEmpty(String str) Checks if a String is empty ("") or null.
static boolean	isNotBlank(String str) Checks if a String is not empty (""), not null and not whitespace only.
static boolean	isNotEmpty(String str) Checks if a String is not empty ("") and not null.
static boolean	isNumber(String str)
static String	replace(String text, String searchString, String replacement)
static String	replace(String text, String searchString, String replacement, int max)
static String[]	split(String str, String separatorChars)
static Long[]	StringArrayToLongArray(String[] src) 字符串数组转换成Long数组
static String	underLine2Camel(String underLineStr) 下滑线 转驼峰

从类继承的方法 java.lang.Object

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

字段详细资料

INDEX_NOT_FOUND

public static final int INDEX_NOT_FOUND

另请参阅:

常量字段值

EMPTY_STRING_ARRAY

public static final String[] EMPTY_STRING_ARRAY

构造器详细资料

StringUtils

public StringUtils()

方法详细资料

isNumber

public static boolean isNumber(String str)

underLine2Camel

public static String underLine2Camel(String underLineStr)

下滑线 转驼峰

参数:

underLineStr - 字符串（下划线）

返回:

字符串（驼峰）

camel2UnderLine

public static String camel2UnderLine(String camelStr)

驼峰转下划线

参数:

camelStr - 字符串（驼峰）

返回:

字符串（下划线）

isEmpty

public static boolean isEmpty(String str)

Checks if a String is empty ("") or null.

 StringUtils.isEmpty(null)      = true
 StringUtils.isEmpty("")        = true
 StringUtils.isEmpty(" ")       = false
 StringUtils.isEmpty("bob")     = false
 StringUtils.isEmpty("  bob  ") = false
 

NOTE: This method changed in Lang version 2.0. It no longer trims the String. That functionality is available in isBlank().

参数:

str - the String to check, may be null

返回:

true if the String is empty or null

isNotEmpty

public static boolean isNotEmpty(String str)

Checks if a String is not empty ("") and not null.

 StringUtils.isNotEmpty(null)      = false
 StringUtils.isNotEmpty("")        = false
 StringUtils.isNotEmpty(" ")       = true
 StringUtils.isNotEmpty("bob")     = true
 StringUtils.isNotEmpty("  bob  ") = true
 

参数:

str - the String to check, may be null

返回:

true if the String is not empty and not null

isBlank

public static boolean isBlank(String str)

Checks if a String is whitespace, empty ("") or null.

 StringUtils.isBlank(null)      = true
 StringUtils.isBlank("")        = true
 StringUtils.isBlank(" ")       = true
 StringUtils.isBlank("bob")     = false
 StringUtils.isBlank("  bob  ") = false
 

参数:

str - the String to check, may be null

返回:

true if the String is null, empty or whitespace

从以下版本开始:

2.0

isNotBlank

public static boolean isNotBlank(String str)

Checks if a String is not empty (""), not null and not whitespace only.

 StringUtils.isNotBlank(null)      = false
 StringUtils.isNotBlank("")        = false
 StringUtils.isNotBlank(" ")       = false
 StringUtils.isNotBlank("bob")     = true
 StringUtils.isNotBlank("  bob  ") = true
 

参数:

str - the String to check, may be null

返回:

true if the String is not empty and not null and not whitespace

从以下版本开始:

2.0

StringArrayToLongArray

public static Long[] StringArrayToLongArray(String[] src)

字符串数组转换成Long数组

参数:

src -

返回:

toLong

split

public static String[] split(String str,
                             String separatorChars)

replace

public static String replace(String text,
                             String searchString,
                             String replacement)

replace

public static String replace(String text,
                             String searchString,
                             String replacement,
                             int max)

arrayToString

public static String arrayToString(String[] arr)

参数:

arr -

返回: