StringUtils (Aliyun OSS SDK for Java 3.8.0 API)

java.lang.Object
- com.aliyun.oss.common.utils.StringUtils

```
public class StringUtils
extends Object
```
Utilities for converting objects to strings.

字段概要

字段
限定符和类型字段和说明

static String COMMA_SEPARATOR

static String DEFAULT_ENCODING

static Charset UTF8

字段
限定符和类型	字段和说明
`static String`	`COMMA_SEPARATOR`
`static String`	`DEFAULT_ENCODING`
`static Charset`	`UTF8`

构造器概要

构造器
构造器和说明

StringUtils()

构造器
构造器和说明
`StringUtils()`

方法概要

方法
限定符和类型	方法和说明
`static void`	`appendCompactedString(StringBuilder destination, String source)` This method appends a string to a string builder and collapses contiguous white space is a single space.
`static boolean`	`beginsWithIgnoreCase(String data, String seq)` Performs a case insensitive comparison and returns true if the data begins with the given sequence.
`static int`	`compare(String str1, String str2)` Compare two strings with Locale.ENGLISH This method is preferred over String.compareTo() method.
`static String`	`fromBigDecimal(BigDecimal value)`
`static String`	`fromBigInteger(BigInteger value)`
`static String`	`fromBoolean(Boolean value)`
`static String`	`fromByte(Byte b)` Returns the string representation of the specified Byte.
`static String`	`fromDouble(Double d)` Returns the string representation of the specified double.
`static String`	`fromFloat(Float value)`
`static String`	`fromInteger(Integer value)`
`static String`	`fromLong(Long value)`
`static String`	`fromString(String value)`
`static boolean`	`hasValue(String str)`
`static boolean`	`isNullOrEmpty(String value)`
`static String`	`join(String joiner, Collection<String> collection)` Joins the strings in collection with joiner between each string
`static String`	`join(String joiner, String... parts)` Joins the strings in parts with joiner between each string
`static String`	`lowerCase(String str)` Converts a given String to lower case with Locale.ENGLISH
`static String`	`replace(String originalString, String partToMatch, String replacement)`
`static BigDecimal`	`toBigDecimal(String s)`
`static BigInteger`	`toBigInteger(String s)`
`static Boolean`	`toBoolean(StringBuilder value)`
`static Integer`	`toInteger(StringBuilder value)`
`static String`	`toString(StringBuilder value)`
`static String`	`trim(String value)` A null-safe trim method.
`static String`	`upperCase(String str)` Converts a given String to upper case with Locale.ENGLISH

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
  - DEFAULT_ENCODING
```
public static final String DEFAULT_ENCODING
```
    另请参阅:
    常量字段值
  - COMMA_SEPARATOR
```
public static final String COMMA_SEPARATOR
```
    另请参阅:
    常量字段值
  - UTF8
```
public static final Charset UTF8
```
- 构造器详细资料
  - StringUtils
```
public StringUtils()
```
- 方法详细资料
  - toInteger
```
public static Integer toInteger(StringBuilder value)
```
  - toString
```
public static String toString(StringBuilder value)
```
  - toBoolean
```
public static Boolean toBoolean(StringBuilder value)
```
  - fromInteger
```
public static String fromInteger(Integer value)
```
  - fromLong
```
public static String fromLong(Long value)
```
  - fromString
```
public static String fromString(String value)
```
  - fromBoolean
```
public static String fromBoolean(Boolean value)
```
  - fromBigInteger
```
public static String fromBigInteger(BigInteger value)
```
  - fromBigDecimal
```
public static String fromBigDecimal(BigDecimal value)
```
  - toBigInteger
```
public static BigInteger toBigInteger(String s)
```
  - toBigDecimal
```
public static BigDecimal toBigDecimal(String s)
```
  - fromFloat
```
public static String fromFloat(Float value)
```
  - fromDouble
```
public static String fromDouble(Double d)
```
    Returns the string representation of the specified double.
    
    参数:
    d - The double to represent as a string.
    
    返回:
    The string representation of the specified double.
  - fromByte
```
public static String fromByte(Byte b)
```
    Returns the string representation of the specified Byte.
    
    参数:
    b - The Byte to represent as a string.
    
    返回:
    The string representation of the specified Byte.
  - replace
```
public static String replace(String originalString,
             String partToMatch,
             String replacement)
```
  - join
```
public static String join(String joiner,
          String... parts)
```
    Joins the strings in parts with joiner between each string
    
    参数:
    joiner - the string to insert between the strings in parts
    parts - the parts to join
  - join
```
public static String join(String joiner,
          Collection<String> collection)
```
    Joins the strings in collection with joiner between each string
    
    参数:
    joiner - the string to insert between the strings in collection
    collection - the collection to join
  - trim
```
public static String trim(String value)
```
    A null-safe trim method. If the input string is null, returns null; otherwise returns a trimmed version of the input.
  - isNullOrEmpty
```
public static boolean isNullOrEmpty(String value)
```
    返回:
    true if the given value is either null or the empty string
  - hasValue
```
public static boolean hasValue(String str)
```
    返回:
    true if the given value is non-null and non-empty
  - lowerCase
```
public static String lowerCase(String str)
```
    Converts a given String to lower case with Locale.ENGLISH
    
    参数:
    str - the string to be converted to lower case
    
    返回:
    the lower case of string, or itself if string is null/empty
  - upperCase
```
public static String upperCase(String str)
```
    Converts a given String to upper case with Locale.ENGLISH
    
    参数:
    str - the string to be converted to upper case
    
    返回:
    the upper case of string, or itself if string is null/empty
  - compare
```
public static int compare(String str1,
          String str2)
```
    Compare two strings with Locale.ENGLISH This method is preferred over String.compareTo() method.
    
    参数:
    str1 - String 1
    str2 - String 2
    
    返回:
    negative integer if str1 lexicographically precedes str2 positive integer if str1 lexicographically follows str2 0 if both strings are equal
    
    抛出:
    
    IllegalArgumentException - throws exception if both or either of the strings is null
  - appendCompactedString
```
public static void appendCompactedString(StringBuilder destination,
                         String source)
```
    This method appends a string to a string builder and collapses contiguous white space is a single space. This is equivalent to: destination.append(source.replaceAll("\\s+", " ")) but does not create a Pattern object that needs to compile the match string; it also prevents us from having to make a Matcher object as well.
  - beginsWithIgnoreCase
```
public static boolean beginsWithIgnoreCase(String data,
                           String seq)
```
    Performs a case insensitive comparison and returns true if the data begins with the given sequence.

类 StringUtils

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

DEFAULT_ENCODING

COMMA_SEPARATOR

UTF8

构造器详细资料

StringUtils

方法详细资料

toInteger

toString

toBoolean

fromInteger

fromLong

fromString

fromBoolean

fromBigInteger

fromBigDecimal

toBigInteger

toBigDecimal

fromFloat

fromDouble

fromByte

replace

join

join

trim

isNullOrEmpty

hasValue

lowerCase

upperCase

compare

appendCompactedString

beginsWithIgnoreCase