/*
* NOTE: This copyright does *not* cover user programs that use HQ
* program services by normal system calls through the application
* program interfaces provided as part of the Hyperic Plug-in Development
* Kit or the Hyperic Client Development Kit - this is merely considered
* normal use of the program, and does *not* fall under the heading of
* "derived work".
*
* Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
* This file is part of HQ.
*
* HQ is free software; you can redistribute it and/or modify
* it under the terms version 2 of the GNU General Public License as
* published by the Free Software Foundation. This program is distributed
* in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
package org.hyperic.hq.ui.taglib.display;
/**
* One line description of what this class does.
*
* More detailed class description, including examples of usage if applicable.
**/
public class StringUtil extends Object
{
/**
* Replace character at given index with the same character to upper case
*
* @param oldString old string
* @param index of replacement
* @return String new string
* @exception StringIndexOutOfBoundsException
*
**/
public static String toUpperCaseAt( String oldString, int index )
throws NullPointerException, StringIndexOutOfBoundsException
{
int length = oldString.length();
String newString = "";
if( index >= length || index < 0 ) {
throw new StringIndexOutOfBoundsException(
"Index " + index
+ " is out of bounds for string length " + length );
}
//get upper case replacement
String upper = String.valueOf( oldString.charAt( index ) ).toUpperCase();
//avoid index out of bounds
String paddedString = oldString + " ";
//get reusable parts
String beforeIndex = paddedString.substring( 0, index );
String afterIndex = paddedString.substring( index + 1 );
//generate new String - remove padding spaces
newString = ( beforeIndex + upper + afterIndex ).substring( 0, length );
return newString;
}
}