Java Utililty Methods List Concatenate

StringBuffer sb = new StringBuffer();
for (Iterator i = strList.iterator(); i.hasNext();) {
    sb.append(i.next());
    if (i.hasNext())
        sb.append(delim);
return sb.toString();

ArrayList<int[]> ranges = new ArrayList<int[]>();
if (damages.size() == 0)
    return ranges;
Collections.sort(damages);
int start = -1;
int next = 0;
for (Integer i : damages) {
    if (start == -1) {
...

StringBuilder sb = new StringBuilder();
for (String line : lines) {
    sb.append(line);
    sb.append(LINE_BREAK);
return sb.toString();

StringBuilder builder = new StringBuilder();
int countMinus1 = lines.size() - 1;
for (int i = 0; i < countMinus1; i++) {
    builder.append(lines.get(i)).append('\n');
if (!lines.isEmpty()) {
    builder.append(lines.get(countMinus1));
return builder.toString();

String result = "";
for (String discountCommentCause : discountCommentCauseList) {
    result += discountCommentCause + "\n\n";
if (discountCommentCauseList.size() > 0) {
    result = result.substring(0, result.lastIndexOf("\n\n"));
return result;
...

return concatList(list, "\n");

if (array == null || array.length < 1) {
    return Collections.emptyList();
List<E> newList = new ArrayList<E>();
for (List<E> e : array) {
    if (isNotEmpty(e)) {
        newList.addAll(e);
return newList;

if (null == strings) {
    return EMPTY_STRINGBUFFER.subSequence(0, EMPTY_STRINGBUFFER.length());
int initialSize = 0;
for (String s : strings) {
    initialSize += s.length() + 2;
StringBuilder builder = new StringBuilder(initialSize);
...

String suggestedWords = new String();
for (int i = 0; i < suggestedList.size(); i++) {
    String word = suggestedList.get(i);
    suggestedWords = addWord(suggestedWords, word);
    suggestedWords = trimIfLastIndex(suggestedList, suggestedWords, i);
return suggestedWords;

names.add(name);
Collections.sort(names);
StringBuilder sb = new StringBuilder();
for (String id : names) {
    sb.append(id);
return sb.toString();