com.alipay.sofa.registry.client.util

类 StringUtils

java.lang.Object

com.alipay.sofa.registry.client.util.StringUtils

public class StringUtils
extends Object

The type String utils.

版本:

$Id : StringUtils.java, v 0.1 2018-03-05 17:36 zhuoyu.sjw Exp $$

字段概要

字段

限定符和类型	字段和说明
static String	EMPTY The constant EMPTY.

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	defaultString(Object str) Returns either the passed in String, or if the String is null, an empty String ("").
static boolean	isBlank(CharSequence cs) Is blank boolean.
static boolean	isEmpty(CharSequence cs) Is empty boolean.
static boolean	isNotBlank(CharSequence cs) Is not blank boolean.
static boolean	isNotEmpty(CharSequence cs) Is not empty boolean.
static String	toString(Object o) To string string.
static String	toString(Object o, String defaultVal) To string string.

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

EMPTY

public static final String EMPTY

The constant EMPTY.

另请参阅:

常量字段值

构造器详细资料

StringUtils

public StringUtils()

方法详细资料

isEmpty

public static boolean isEmpty(CharSequence cs)

Is empty boolean.

参数:

cs - the cs

返回:

the boolean

isNotEmpty

public static boolean isNotEmpty(CharSequence cs)

Is not empty boolean.

参数:

cs - the cs

返回:

the boolean

isBlank

public static boolean isBlank(CharSequence cs)

Is blank boolean.

参数:

cs - the cs

返回:

the boolean

isNotBlank

public static boolean isNotBlank(CharSequence cs)

Is not blank boolean.

参数:

cs - the cs

返回:

the boolean

defaultString

public static String defaultString(Object str)

Returns either the passed in String, or if the String is null, an empty String ("").

 StringUtils.defaultString(null)  = ""
 StringUtils.defaultString("")    = ""
 StringUtils.defaultString("bat") = "bat"
 

参数:

str - the String to check, may be null

返回:

the passed in String, or the empty String if it was null

另请参阅:

String#valueOf(Object)

toString

public static String toString(Object o,
                              String defaultVal)

To string string.

参数:

o - the o

defaultVal - the default val

返回:

the string

toString

public static String toString(Object o)

To string string.

参数:

o - the o

返回:

the string