org.openingo.jdkits.lang

类 StrKit

java.lang.Object

org.openingo.jdkits.lang.StrKit

所有已实现的接口:

StringPoolKit

public final class StrKit
extends Object
implements StringPoolKit

字符串工具 StrKit

作者:

Qicz

字段概要

从接口继承的字段 org.openingo.jdkits.lang.StringPoolKit

AMPERSAND, AND, ASTERISK, AT, BACK_SLASH, BACKTICK, BYTES_NEW_LINE, COLON, COMMA, CRLF, DASH, DOLLAR, DOLLAR_LEFT_BRACE, DOT, DOT_CLASS, DOT_JAVA, DOT_NEWLINE, DOT_XML, DOTDOT, EMPTY, EMPTY_ARRAY, EQUALS, EXCLAMATION_MARK, FALSE, HASH, HASH_LEFT_BRACE, HAT, HTML_AMP, HTML_GT, HTML_LT, HTML_NBSP, HTML_QUOTE, ISO_8859_1, LEFT_BRACE, LEFT_BRACKET, LEFT_CHEV, LEFT_SQ_BRACKET, N, NEWLINE, NO, NULL, OFF, ON, ONE, PERCENT, PIPE, PLUS, QUESTION_MARK, QUOTE, RETURN, RIGHT_BRACE, RIGHT_BRACKET, RIGHT_CHEV, RIGHT_SQ_BRACKET, SEMICOLON, SINGLE_QUOTE, SLASH, SPACE, STAR, TAB, TILDA, TRUE, UNDERSCORE, US_ASCII, UTF_8, Y, YES, ZERO

方法概要

限定符和类型	方法和说明
static int[]	convertCharToInt(char[] c) 将字符数组转为整型数组
static String	defaultIfBlank(String str, String defaultValue)
static boolean	equals(CharSequence cs1, CharSequence cs2) Compares two CharSequences, returning true if they represent equal sequences of characters.
static boolean	equals(String a, String b)
static boolean	equalsAny(CharSequence string, CharSequence... searchStrings) Compares given string to a CharSequences vararg of searchStrings, returning true if the string is equal to any of the searchStrings.
static String	firstCharToLowerCase(String str) 首字母变小写
static String	firstCharToUpperCase(String str) 首字母变大写
static String	getRandomUUID()
static boolean	isBlank(String str) 字符串为 null 或者内部字符全部为 ' ' '\t' '\n' '\r' 这四类字符时返回 true
static String	join(List<String> list, String separator)
static String	join(String[] stringArray)
static String	join(String[] stringArray, String separator)
static boolean	notBlank(String... strings)
static boolean	notBlank(String str)
static boolean	notNull(Object... paras)
static boolean	slowEquals(String a, String b)
static String	toCamelCase(String stringWithUnderline)
static Double	toDouble(String obj)
static Float	toFloat(String obj)
static Integer	toInteger(String obj)
static Long	toLong(String obj)

从类继承的方法 java.lang.Object

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

方法详细资料

firstCharToLowerCase

public static String firstCharToLowerCase(String str)

首字母变小写

firstCharToUpperCase

public static String firstCharToUpperCase(String str)

首字母变大写

isBlank

public static boolean isBlank(String str)

字符串为 null 或者内部字符全部为 ' ' '\t' '\n' '\r' 这四类字符时返回 true

notBlank

public static boolean notBlank(String str)

notBlank

public static boolean notBlank(String... strings)

notNull

public static boolean notNull(Object... paras)

defaultIfBlank

public static String defaultIfBlank(String str,
                                    String defaultValue)

toCamelCase

public static String toCamelCase(String stringWithUnderline)

join

public static String join(String[] stringArray)

join

public static String join(String[] stringArray,
                          String separator)

join

public static String join(List<String> list,
                          String separator)

slowEquals

public static boolean slowEquals(String a,
                                 String b)

equals

public static boolean equals(String a,
                             String b)

getRandomUUID

public static String getRandomUUID()

toInteger

public static Integer toInteger(String obj)

toLong

public static Long toLong(String obj)

toDouble

public static Double toDouble(String obj)

toFloat

public static Float toFloat(String obj)

equalsAny

public static boolean equalsAny(CharSequence string,
                                CharSequence... searchStrings)

Compares given string to a CharSequences vararg of searchStrings, returning true if the string is equal to any of the searchStrings.

 StringUtils.equalsAny(null, (CharSequence[]) null) = false
 StringUtils.equalsAny(null, null, null)    = true
 StringUtils.equalsAny(null, "abc", "def")  = false
 StringUtils.equalsAny("abc", null, "def")  = false
 StringUtils.equalsAny("abc", "abc", "def") = true
 StringUtils.equalsAny("abc", "ABC", "DEF") = false
 

参数:

string - to compare, may be null.

searchStrings - a vararg of strings, may be null.

返回:

true if the string is equal (case-sensitive) to any other element of searchStrings; false if searchStrings is null or contains no matches.

从以下版本开始:

3.5

equals

public static boolean equals(CharSequence cs1,
                             CharSequence cs2)

Compares two CharSequences, returning true if they represent equal sequences of characters.

nulls are handled without exceptions. Two null references are considered to be equal. The comparison is case sensitive.

 StringUtils.equals(null, null)   = true
 StringUtils.equals(null, "abc")  = false
 StringUtils.equals("abc", null)  = false
 StringUtils.equals("abc", "abc") = true
 StringUtils.equals("abc", "ABC") = false
 

参数:

cs1 - the first CharSequence, may be null

cs2 - the second CharSequence, may be null

返回:

true if the CharSequences are equal (case-sensitive), or both null

从以下版本开始:

3.0 Changed signature from equals(String, String) to equals(CharSequence, CharSequence)

另请参阅:

Object.equals(Object)

convertCharToInt

public static int[] convertCharToInt(char[] c)
                              throws NumberFormatException

将字符数组转为整型数组

参数:

c -

抛出:

NumberFormatException