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

Stringjoin(List list)
join 
String str = "";
for (int i = 0; i < list.size(); i++) {
    if (i > 0) {
        str += ",";
    str += "'" + list.get(i) + "'";
return str;
...
Stringjoin(List list, String conjunction)
join 
StringBuilder sb = new StringBuilder();
if (conjunction == null) {
    conjunction = ", ";
if (list != null && !list.isEmpty()) {
    for (String string : list) {
        sb.append(string).append(conjunction);
    sb.setLength(sb.length() - conjunction.length());
return sb.toString();
Stringjoin(List list, String delim)
Join each string in the string list list to one string that delimiter by given delimiter delim. 
if ((list == null) || (list.size() < 1)) {
    return null;
StringBuffer buf = new StringBuffer();
Iterator<String> i = list.iterator();
while (i.hasNext()) {
    buf.append((String) i.next());
    if (i.hasNext()) {
...
Stringjoin(List list, String delim)
Returns the concatenation of strings from a list using the delimiter indicated. 
boolean isDelimiter = false;
final StringBuilder builder = new StringBuilder();
if (list != null) {
    for (String val : list) {
        if (isDelimiter) {
            builder.append(delim);
        builder.append(val);
...
Stringjoin(List list, String delimiter)
join 
StringBuilder sb = new StringBuilder();
int size = list.size();
for (int i = 0; i < size; i++) {
    sb.append(list.get(i)).append(i < size - 1 ? delimiter : "");
return sb.toString();
Stringjoin(List list, String delimiter)
join 
return join(list, delimiter, "");
Stringjoin(List list, String delimiter)
This method joins together a list of Strings and separates them by a delimiter 
StringBuffer buf = new StringBuffer("");
if (list != null && list.size() > 0)
    for (int i = 0; i < list.size(); i++)
        if (i == 0)
            buf.append(list.get(i));
        else
            buf.append(delimiter).append(list.get(i));
return buf.toString();
...
Stringjoin(List list, String sep)
This function is used to join all elements from a List list of String strings in only one String . 
if (list.size() == 1) {
    return list.remove(0);
} else {
    return list.remove(0) + sep + join(list, sep);
Stringjoin(List list, String separator)
join 
String joined = "";
for (String s : list) {
    joined += s + separator;
joined = !list.isEmpty() ? joined.substring(0, joined.length() - separator.length()) : joined;
return joined;
Stringjoin(List list, String separator)
join 
if (list == null) {
    return null;
if (list.isEmpty()) {
    return "";
if (separator == null) { 
    separator = "";
...