cn.trinea.android.common.util

Class StringUtils

java.lang.Object

cn.trinea.android.common.util.StringUtils

public class StringUtils
extends java.lang.Object

String Utils

Author:

Trinea 2011-7-22

Constructor Summary

Constructors

Constructor and Description
StringUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	capitalizeFirstLetter(java.lang.String str) capitalize first letter capitalizeFirstLetter(null) = null; capitalizeFirstLetter("") = ""; capitalizeFirstLetter("2ab") = "2ab" capitalizeFirstLetter("a") = "A" capitalizeFirstLetter("ab") = "Ab" capitalizeFirstLetter("Abc") = "Abc"
static java.lang.String	fullWidthToHalfWidth(java.lang.String s) transform half width char to full width char fullWidthToHalfWidth(null) = null; fullWidthToHalfWidth("") = ""; fullWidthToHalfWidth(new String(new char[] {12288})) = " "; fullWidthToHalfWidth("！＂＃＄％＆) = "!
static java.lang.String	getHrefInnerHtml(java.lang.String href) get innerHtml from href getHrefInnerHtml(null) = "" getHrefInnerHtml("") = "" getHrefInnerHtml("mp3") = "mp3"; getHrefInnerHtml("<a innerHtml</a>") = "<a innerHtml</a>"; getHrefInnerHtml("<a>innerHtml</a>") = "innerHtml"; getHrefInnerHtml("<a<a>innerHtml</a>") = "innerHtml"; getHrefInnerHtml("<a href="baidu.com">innerHtml</a>") = "innerHtml"; getHrefInnerHtml("<a href="baidu.com" title="baidu">innerHtml</a>") = "innerHtml"; getHrefInnerHtml(" <a>innerHtml</a> ") = "innerHtml"; getHrefInnerHtml("<a>innerHtml</a></a>") = "innerHtml"; getHrefInnerHtml("jack<a>innerHtml</a></a>") = "innerHtml"; getHrefInnerHtml("<a>innerHtml1</a><a>innerHtml2</a>") = "innerHtml2";
static java.lang.String	halfWidthToFullWidth(java.lang.String s) transform full width char to half width char halfWidthToFullWidth(null) = null; halfWidthToFullWidth("") = ""; halfWidthToFullWidth(" ") = new String(new char[] {12288}); halfWidthToFullWidth("!
static java.lang.String	htmlEscapeCharsToString(java.lang.String source) process special char in html htmlEscapeCharsToString(null) = null; htmlEscapeCharsToString("") = ""; htmlEscapeCharsToString("mp3") = "mp3"; htmlEscapeCharsToString("mp3<") = "mp3<"; htmlEscapeCharsToString("mp3>") = "mp3\>"; htmlEscapeCharsToString("mp3&mp4") = "mp3&mp4"; htmlEscapeCharsToString("mp3"mp4") = "mp3\"mp4"; htmlEscapeCharsToString("mp3<>&"mp4") = "mp3\<\>&\"mp4";
static boolean	isBlank(java.lang.String str) is null or its length is 0 or it is made by space isBlank(null) = true; isBlank("") = true; isBlank(" ") = true; isBlank("a") = false; isBlank("a ") = false; isBlank(" a") = false; isBlank("a b") = false;
static boolean	isEmpty(java.lang.String str) is null or its length is 0 isEmpty(null) = true; isEmpty("") = true; isEmpty(" ") = false;
static boolean	isEquals(java.lang.String actual, java.lang.String expected) compare two string
static java.lang.String	nullStrToEmpty(java.lang.String str) null string to empty string nullStrToEmpty(null) = ""; nullStrToEmpty("") = ""; nullStrToEmpty("aa") = "aa";
static java.lang.String	utf8Encode(java.lang.String str) encoded in utf-8 utf8Encode(null) = null utf8Encode("") = ""; utf8Encode("aa") = "aa"; utf8Encode("啊啊啊啊") = "%E5%95%8A%E5%95%8A%E5%95%8A%E5%95%8A";
static java.lang.String	utf8Encode(java.lang.String str, java.lang.String defultReturn) encoded in utf-8, if exception, return defultReturn

Methods inherited from class java.lang.Object

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

Constructor Detail

StringUtils

public StringUtils()

Method Detail

isBlank

public static boolean isBlank(java.lang.String str)

is null or its length is 0 or it is made by space

 isBlank(null) = true;
 isBlank("") = true;
 isBlank("  ") = true;
 isBlank("a") = false;
 isBlank("a ") = false;
 isBlank(" a") = false;
 isBlank("a b") = false;
 

Parameters:

str -

Returns:

if string is null or its size is 0 or it is made by space, return true, else return false.

isEmpty

public static boolean isEmpty(java.lang.String str)

is null or its length is 0

 isEmpty(null) = true;
 isEmpty("") = true;
 isEmpty("  ") = false;
 

Parameters:

str -

Returns:

if string is null or its size is 0, return true, else return false.

isEquals

public static boolean isEquals(java.lang.String actual,
               java.lang.String expected)

compare two string

Parameters:

actual -

expected -

Returns:

See Also:

ObjectUtils.isEquals(Object, Object)

nullStrToEmpty

public static java.lang.String nullStrToEmpty(java.lang.String str)

null string to empty string

 nullStrToEmpty(null) = "";
 nullStrToEmpty("") = "";
 nullStrToEmpty("aa") = "aa";
 

Parameters:

str -

Returns:

capitalizeFirstLetter

public static java.lang.String capitalizeFirstLetter(java.lang.String str)

capitalize first letter

 capitalizeFirstLetter(null)     =   null;
 capitalizeFirstLetter("")       =   "";
 capitalizeFirstLetter("2ab")    =   "2ab"
 capitalizeFirstLetter("a")      =   "A"
 capitalizeFirstLetter("ab")     =   "Ab"
 capitalizeFirstLetter("Abc")    =   "Abc"
 

Parameters:

str -

Returns:

utf8Encode

public static java.lang.String utf8Encode(java.lang.String str)

encoded in utf-8

 utf8Encode(null)        =   null
 utf8Encode("")          =   "";
 utf8Encode("aa")        =   "aa";
 utf8Encode("啊啊啊啊")   = "%E5%95%8A%E5%95%8A%E5%95%8A%E5%95%8A";
 

Parameters:

str -

Returns:

Throws:

java.io.UnsupportedEncodingException - if an error occurs

utf8Encode

public static java.lang.String utf8Encode(java.lang.String str,
                          java.lang.String defultReturn)

encoded in utf-8, if exception, return defultReturn

Parameters:

str -

defultReturn -

Returns:

getHrefInnerHtml

public static java.lang.String getHrefInnerHtml(java.lang.String href)

get innerHtml from href

 getHrefInnerHtml(null)                                  = ""
 getHrefInnerHtml("")                                    = ""
 getHrefInnerHtml("mp3")                                 = "mp3";
 getHrefInnerHtml("<a innerHtml</a>")                    = "<a innerHtml</a>";
 getHrefInnerHtml("<a>innerHtml</a>")                    = "innerHtml";
 getHrefInnerHtml("<a<a>innerHtml</a>")                    = "innerHtml";
 getHrefInnerHtml("<a href="baidu.com">innerHtml</a>")               = "innerHtml";
 getHrefInnerHtml("<a href="baidu.com" title="baidu">innerHtml</a>") = "innerHtml";
 getHrefInnerHtml("   <a>innerHtml</a>  ")                           = "innerHtml";
 getHrefInnerHtml("<a>innerHtml</a></a>")                      = "innerHtml";
 getHrefInnerHtml("jack<a>innerHtml</a></a>")                  = "innerHtml";
 getHrefInnerHtml("<a>innerHtml1</a><a>innerHtml2</a>")        = "innerHtml2";
 

Parameters:

href -

Returns:

• if href is null, return ""
• if not match regx, return source
• return the last string that match regx

htmlEscapeCharsToString

public static java.lang.String htmlEscapeCharsToString(java.lang.String source)

process special char in html

 htmlEscapeCharsToString(null) = null;
 htmlEscapeCharsToString("") = "";
 htmlEscapeCharsToString("mp3") = "mp3";
 htmlEscapeCharsToString("mp3<") = "mp3<";
 htmlEscapeCharsToString("mp3>") = "mp3\>";
 htmlEscapeCharsToString("mp3&mp4") = "mp3&mp4";
 htmlEscapeCharsToString("mp3"mp4") = "mp3\"mp4";
 htmlEscapeCharsToString("mp3<>&"mp4") = "mp3\<\>&\"mp4";
 

Parameters:

source -

Returns:

fullWidthToHalfWidth

public static java.lang.String fullWidthToHalfWidth(java.lang.String s)

transform half width char to full width char

 fullWidthToHalfWidth(null) = null;
 fullWidthToHalfWidth("") = "";
 fullWidthToHalfWidth(new String(new char[] {12288})) = " ";
 fullWidthToHalfWidth("！＂＃＄％＆) = "!\"#$%&";
 

Parameters:

s -

Returns:

halfWidthToFullWidth

public static java.lang.String halfWidthToFullWidth(java.lang.String s)

transform full width char to half width char

 halfWidthToFullWidth(null) = null;
 halfWidthToFullWidth("") = "";
 halfWidthToFullWidth(" ") = new String(new char[] {12288});
 halfWidthToFullWidth("!\"#$%&) = "！＂＃＄％＆";
 

Parameters:

s -

Returns: