Java Utililty Methods String Remove

Iterator<String[]> iter = iteratorMap.get(key);
remove(key);
return iter;

if (s == null)
    return s;
Set<String> set = parseAndRemoveDuplicatesAsSet(s, del);
return getSeparatedListOfString(set, "", "", false, del);

return replaceAll(origStr, removeStr, "");

if (targetStr == null) {
    throw new IllegalArgumentException("'targetStr' is null");
if (removeStr == null) {
    throw new IllegalArgumentException("'start' is null");
return removeAll(targetStr, new String[] { removeStr });

String s3 = s1.concat(s2);
Map<Character, List<Integer>> tracker = new HashMap<>();
for (int i = 0; i < s3.length(); i++) {
    char c = s3.charAt(i);
    if (tracker.containsKey(c)) {
        tracker.get(c).add(i);
    } else {
        List<Integer> indexes = new ArrayList<>();
...

String[] lines = split(s, CRLF);
boolean lastLineBlank = false;
String newS = "";
for (int i = 0; i < lines.length; i++) {
    if (!lines[i].equals("")) {
        newS += lines[i] + CRLF;
        lastLineBlank = false;
    } else {
...

String result = new String();
String[] split = commandString.split(" ");
List<String> wordList = new ArrayList(Arrays.asList(split));
wordList.remove(0);
for (String word : wordList) {
    result += word + " ";
return result;
...

if (values == null || values.length == 0)
    return new String[0];
List<String> validValues = new ArrayList<String>();
for (String value : values)
    if (value != null && value.length() > 0)
        validValues.add(value);
return validValues.toArray(new String[validValues.size()]);

if (s_ == null)
    return null;
StringBuffer sb_ = new StringBuffer();
int i = 0;
while (true) {
    int j = s_.indexOf('\\', i);
    if (j >= 0) {
        sb_.append(s_.substring(i, j));
...

boolean lastCharacterAddedWasWhiteSpace = false;
StringBuilder searchString = new StringBuilder();
for (int index = 0; index < toSearch.length(); index++) {
    char currChar = toSearch.charAt(index);
    if (setAllToLowerCase) {
        currChar = Character.toLowerCase(currChar);
    if (currChar != '\r' && currChar != '\n') {
...