org.onemind.commons.java.util
Class StringUtils

java.lang.Object
  org.onemind.commons.java.util.StringUtils

public final class StringUtils

extends java.lang.Object

String utilities method

Version:

$Id: StringUtils.java,v 1.3 2004/09/19 20:07:32 thlee Exp $ $Name: $

Author:

TiongHiang Lee (thlee@onemindsoft.org)

Method Summary

static java.lang.String	concat(java.util.Collection l, java.lang.String delimiter) Concat the collection l to string with delimenter
static java.lang.String	concat(java.lang.Object[] objects, java.lang.String delimiter) Concant the object in the array (using objects.toString()), delimited by delimiter
static boolean	isNullOrEmpty(java.lang.Object strObject) Whether the string is empty
static boolean	isNullOrEmpty(java.lang.String str) Whether the string is empty
static java.lang.String	substringAfter(java.lang.String str, java.lang.String pattern) Return the substring after the first occurrance of pattern
static java.lang.String	substringAfterLast(java.lang.String str, java.lang.String pattern) Return substring of str after the the last occurrance of pattern
static java.lang.String	substringBeforeLast(java.lang.String str, java.lang.String pattern) Return substring of str before the last occurrance of str

Methods inherited from class java.lang.Object

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

Method Detail

concat

public static java.lang.String concat(java.util.Collection l,
                                      java.lang.String delimiter)

Concat the collection l to string with delimenter

Parameters:

l - the collection

delimiter - the delimiter

Returns:

the result string

concat

public static java.lang.String concat(java.lang.Object[] objects,
                                      java.lang.String delimiter)

Concant the object in the array (using objects.toString()), delimited by delimiter

Parameters:

objects - the objects

delimiter - the delimiter

Returns:

a string

substringAfter

public static java.lang.String substringAfter(java.lang.String str,
                                              java.lang.String pattern)

Return the substring after the first occurrance of pattern

Parameters:

str - the str

pattern - the pattern

Returns:

the substring of pattern can be matched in str, or null

substringAfterLast

public static java.lang.String substringAfterLast(java.lang.String str,
                                                  java.lang.String pattern)

Return substring of str after the the last occurrance of pattern

Parameters:

str - the str

pattern - the pattern

Returns:

the substring if pattern can be matched in the str, or null

substringBeforeLast

public static java.lang.String substringBeforeLast(java.lang.String str,
                                                   java.lang.String pattern)

Return substring of str before the last occurrance of str

Parameters:

str - the str

pattern - the pattern

Returns:

the substring if pattern can be matched, or null

isNullOrEmpty

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

Whether the string is empty

Parameters:

str - whether is null or zero length (after trim)

Returns:

true if null of zero length after trim

isNullOrEmpty

public static boolean isNullOrEmpty(java.lang.Object strObject)

Whether the string is empty

Returns:

true if null of zero length after trim