Removes specified chars from a string : String Replace « Data Type « Java Tutorial

 * The contents of this file are subject to the Sapient Public License
 * Version 1.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 * The Original Code is The Carbon Component Framework.
 * The Initial Developer of the Original Code is Sapient Corporation
 * Copyright (C) 2003 Sapient Corporation. All Rights Reserved.

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;

 * Utilities for strings.
 * Copyright 2002 Sapient
 * @since carbon 1.0
 * @author Greg Hinkle, May 2002
 * @version $Revision: 1.5 $($Author: dvoet $ / $Date: 2003/05/05 21:21:24 $)
public class StringUtil {
   * Removes specified chars from a string.
   * @param aString the string that will be examined to remove chars
   * @param unWantedCharArray the char array containing the chars
   * that should be removed from a string
   * @return the string after removing the specified chars
  public static String removeCharsFromString(String aString, char[] unWantedCharArray) {

      Character character = null;

      // Store unwanted chars in a hashset
      Set unWantedCharSet = new HashSet();

      for (int i = 0; i < unWantedCharArray.length; i++) {
          character = new Character(unWantedCharArray[i]);

      // Create result String buffer
      StringBuffer result = new StringBuffer(aString.length());

      // For each character in aString, append it to the result string buffer
      // if it is not in unWantedCharSet
      for (int i = 0; i < aString.length(); i++) {
          character = new Character(aString.charAt(i));
          if (!unWantedCharSet.contains(character)) {

      // Return result
      return result.toString();

2.21.String Replace
2.21.1.To replace one specific character with another throughout a string
2.21.2.To remove whitespace from the beginning and end of a string (but not the interior)
2.21.3.Replacing Characters in a String: replace() method creates a new string with the replaced characters.
2.21.4.Replacing Substrings in a String
2.21.6.Replaces all occourances of given character with new one and returns new String object.
2.21.7.Replaces only first occourances of given String with new one and returns new String object.
2.21.8.Replaces all occourances of given String with new one and returns new String object.
2.21.9.Replace/remove character in a String: replace all occurences of a given character
2.21.10.To replace a character at a specified position
2.21.11.Replace \r\n with the
2.21.12.Replace multiple whitespaces between words with single blank
2.21.13.Unaccent letters
2.21.14.Only replace first occurence
2.21.15.Get all digits from a string
2.21.16.Returns a new string with all the whitespace removed
2.21.17.Removes specified chars from a string
2.21.18.Remove/collapse multiple spaces.