Java Utililty Methods List Join

List of utility methods to do List Join

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Description

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

Method

StringjoinToString(List list)
join To String 
StringBuffer strBuf = new StringBuffer();
if (list != null) {
    for (Object item : list) {
        strBuf.append(item.toString());
return strBuf.toString();
StringJoinToString(List list, String delimiter)

Given a List and a delimiter, creates a delimited string of the objects in the List (using the toString() method of each object).

return JoinToString(list, delimiter, false, null);
ListjoinUnique(List list, T element)
Joins a list with an element only if the element is not yet contained in the list. 
return list.contains(element) ? new ArrayList<T>(list) : join(list, element);
StringjoinWordList(List wordList, String delimiter)
join Word List 
if (wordList.size() == 0) {
    return null;
StringBuffer sb = new StringBuffer();
for (String e : wordList) {
    if (sb.length() > 0) {
        sb.append(delimiter);
    sb.append(e);
return sb.toString();
StringlistToStr(List list, String joinChar)
list To Str 
if (isEmpty(list) || joinChar == null) {
    return "";
String listStr = "";
for (String item : list) {
    listStr = listStr + item + joinChar;
listStr = listStr.substring(0, listStr.length() - joinChar.length());
...
StringlistToText(List list, String join)
list To Text 
StringBuilder builder = new StringBuilder();
for (String line : list) {
    builder.append(line).append(join);
if (builder.length() > 0) {
    builder.deleteCharAt(builder.length() - 1);
return builder.toString();
...
ListorderJoinType(List jList)
order Join Type 
List<String> tempList = new ArrayList<String>();
if (jList.get(0).equals("subject") && jList.get(2).equals("object")) {
    tempList.add(jList.get(2));
    tempList.add(jList.get(0));
    tempList.add(jList.get(3));
    tempList.add(jList.get(1));
    return tempList;
} else {
...
ListreverseJoinType(List jList)
reverse Join Type 
List<String> tempList = new ArrayList<String>();
if (jList.get(2).equals("subject") && jList.get(3).equals("object")) {
    tempList.add(jList.get(3));
    tempList.add(jList.get(2));
    tempList.add(jList.get(1));
    tempList.add(jList.get(0));
    return tempList;
} else if (jList.get(2).equals("predicate") && jList.get(3).equals("subject")) {
...
StringsortAndJoin(List col, String sep)
sort And Join 
Collections.sort(col);
return join(col, sep);
StringsortAndJoin(List list)
sort And Join 
Collections.sort(list);
StringBuilder builder = new StringBuilder(10 * list.size());
String sep = "";
for (String name : list) {
    builder.append(sep);
    builder.append(name);
    sep = " ";
return builder.toString();