Java Utililty Methods Collection Join

List of utility methods to do Collection Join

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Description

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

Method

Stringjoin(String delimiter, Collection items)
Create a string by concatenating the elements of a collection using a delimiter between each item 
return (items != null) ? join(delimiter, items.toArray(new String[items.size()])) : null;
Stringjoin(String delimiter, Collection stringCollection)
join 
StringBuilder sb = new StringBuilder(stringCollection.size() * (16 + delimiter.length()));
for (String str : stringCollection) {
    sb.append(str).append(delimiter);
return sb.toString();
Stringjoin(String delimiter, Collection strings)
Joins a collection of strings into one with the specified delimiter. 
if (strings.isEmpty()) {
    return "";
Iterator<String> i = strings.iterator();
StringBuilder sb = new StringBuilder(i.next());
while (i.hasNext()) {
    sb.append(delimiter);
    sb.append(i.next());
...
Stringjoin(String delimiter, Collection values)
Joins a provided collection of String -s via provided delimiter. 
if (values == null || values.isEmpty()) {
    return null;
Iterator<String> valuesIterator = values.iterator();
StringBuilder result = new StringBuilder();
result.append(valuesIterator.next());
while (valuesIterator.hasNext()) {
    result.append(delimiter).append(valuesIterator.next());
...
Stringjoin(String glue, Collection c)
join 
StringBuilder buf = new StringBuilder();
for (Object o : c) {
    if (buf.length() > 0)
        buf.append(glue);
    buf.append(o.toString());
return buf.toString();
Stringjoin(String glue, Collection pieces)
Join a Collection of Strings together. 
return join(glue, pieces.iterator());
Stringjoin(String glue, Collection c)
join 
StringBuilder buf = new StringBuilder();
for (Object o : c) {
    if (buf.length() > 0) {
        buf.append(glue);
    buf.append(o.toString());
return buf.toString();
...
Stringjoin(String glue, Collection strings)
join 
StringBuilder b = new StringBuilder();
boolean first = true;
for (String s : strings) {
    if (!first) {
        b.append(glue);
    first = false;
    b.append(s);
...
Stringjoin(String glue, Collection items)
Produces a string that consists of the toString of each element in collection with the glue string separating each item 
final StringBuilder sb = new StringBuilder();
String join = "";
for (final T item : items) {
    sb.append(join);
    join = glue;
    sb.append(item.toString());
return sb.toString();
...
Stringjoin(String join_string, Collection c)
join 
return join(join_string, c.toArray());