Replacing Substrings in a String : String Replace « Data Type « Java Tutorial

public class Main {
  public static void main(String[] argv) throws Exception {
    System.out.println(replace("this is a test", "is", "are"));

  static String replace(String str, String pattern, String replace) {
    int start = 0;
    int index = 0;
    StringBuffer result = new StringBuffer();

    while ((index = str.indexOf(pattern, start)) >= 0) {
      result.append(str.substring(start, index));
      start = index + pattern.length();
    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.