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 strings)
Join the strings into one string. 
if (strings == null) {
    throw new NullPointerException("argument 'strings' cannot be null");
return join(strings.toArray(new String[strings.size()]));
Stringjoin(List strings)
Returns a new string created by joining each of the strings in the specified list together, with a comma between them. 
String result = "";
boolean first = true;
for (String s : strings) {
    if (!first)
        result += ", ";
    result += s;
    first = false;
return result;
Stringjoin(List strings)
Join a list of strings by comma. 
return join(strings.toArray(new String[0]), ", ");
Stringjoin(List strings, String delim)
join 
return join(strings, 0, strings.size(), delim);
Stringjoin(List strings, String delimiter)
Join the elements of the set 
if (strings == null || delimiter == null) {
    return "";
StringBuffer buf = new StringBuffer();
boolean first = true;
for (String value : strings) {
    if (first) {
        first = false;
...
Stringjoin(List strings, String join)
Join a list of strings with the given joining string. 
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < strings.size(); ++i) {
    String entry = strings.get(i);
    buffer.append(entry);
    if (join != null) {
        if (i < (strings.size() - 1)) {
            buffer.append(join);
return buffer.toString();
Stringjoin(List strings, String joiner)
join 
if (strings.isEmpty())
    return "";
StringBuilder sb = new StringBuilder(strings.get(0));
for (int i = 1; i < strings.size(); i++)
    sb.append(joiner).append(strings.get(i));
return sb.toString();
Stringjoin(List strings, String sep)
join 
final StringBuilder buf = new StringBuilder(strings.size() * 16);
for (int i = 0; i < strings.size(); i++) {
    if (i < strings.size()) {
        buf.append(sep);
    buf.append(strings.get(i));
return buf.toString().trim();
...
Stringjoin(List strings, String separator)
join 
StringBuilder sb = new StringBuilder();
boolean first = true;
for (String string : strings) {
    if (!first) {
        sb.append(separator);
    } else {
        first = false;
    sb.append(string);
return sb.toString();
Stringjoin(List strings, String separator)
join 
if (strings == null || strings.isEmpty()) {
    return "";
StringBuilder b = new StringBuilder();
for (int i = 0;; i++) {
    b.append(strings.get(i));
    if (i == strings.size() - 1) {
        return b.toString();
...