Java Utililty Methods List Trim

List of utility methods to do List Trim

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Description

The list of methods to do List Trim are organized into topic(s).

Method

StringtoStringList(List list, String delimiter, boolean isTrim, boolean isRemoveEmpty)
Converts a List of object to a string list separated by specified delimiter.
(Do trim for each string element if isTrim is true). 
StringBuffer sb = new StringBuffer();
boolean firstElem = true;
for (Object o : list) {
    String s = (o == null) ? "" : o.toString();
    if (isTrim) {
        s = s.trim();
    if (isRemoveEmpty && s.equals("")) {
...
Listtrim(final List row)
Trim all values in row. 
final List<String> formattedRow = new ArrayList<>();
final Iterator<String> it = row.iterator();
while (it.hasNext()) {
    formattedRow.add(it.next().trim());
return formattedRow;
voidtrim(List data, boolean removeEmptyLines)
trim 
for (int i = 0; i < data.size(); i++) {
    final String s = data.get(i);
    data.set(i, s.trim());
if (removeEmptyLines) {
    for (final Iterator<String> it = data.iterator(); it.hasNext();) {
        if (it.next().length() == 0) {
            it.remove();
...
voidtrim(List strs)
Trims every string of a collection. 
for (int i = 0, n = strs.size(); i < n; i++)
    strs.set(i, strs.get(i).trim());
ListtrimElements(List list)
trim Elements 
for (int i = 0; i < list.size(); i++) {
    list.set(i, list.get(i).trim());
return removeEmptyStrings(list);
ListtrimEndDigital(List strs)
trim End Digital 
String endStr = strs.get(strs.size() - 1);
try {
    Integer.parseInt(endStr);
    strs.remove(strs.size() - 1);
} catch (NumberFormatException e) {
    return strs;
return strs;
...
StringtrimIfLastIndex(List suggestedList, String suggestedWords, int i)
trim If Last Index 
if (isLastIndex(suggestedList, i)) {
    suggestedWords = trimSuggestions(suggestedWords);
return suggestedWords;
StringtrimKeyFormat(String s3KeyFormat, List disallowedKeys)
trim Key Format 
int lowestIndex = s3KeyFormat.length();
for (String disallowedKey : disallowedKeys) {
    int index = s3KeyFormat.indexOf(disallowedKey);
    if (index != -1 && index < lowestIndex) {
        lowestIndex = index;
if (lowestIndex == -1) {
...
ListtrimLeadingWhitespaces(List lines)
Trims leading whitespaces. 
if (lines.isEmpty()) {
    return lines;
String lead = null;
for (int i = 0, n = lines.size(); i < n; i++) {
    String line = lines.get(i);
    if (line.isEmpty() == false) {
        if (lead == null) {
...
ListtrimList(List list)
trim List 
if (list != null) {
    for (int i = 0; i < list.size(); i++) {
        String val = list.get(i);
        list.set(i, trimStr(val));
return list;