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(Collection data)
Join the given Collection using the DEFAULT_DELIMITER. 
return join(data, DEFAULT_DELIMITER);
Stringjoin(Collection elements, String separator)
join 
if (elements == null) {
    throw new NullPointerException();
if (separator == null) {
    separator = "";
boolean first = true;
StringBuilder stringBuilder = new StringBuilder();
...
Stringjoin(Collection items)
join 
StringBuilder result = new StringBuilder();
boolean first = true;
for (Object o : items) {
    if (!first) {
        result.append(",");
    if (o != null) {
        result.append(o);
...
Stringjoin(Collection list, char separator)
join 
if (list == null) {
    return "";
int size = list.size();
if (size == 0) {
    return "";
final StringBuilder sb = new StringBuilder();
...
Stringjoin(Collection lst, String delim)
joins a list into a string. 
return joinCol(lst, delim);
Stringjoin(Collection objects, String glue)
same thing as perl's join() 
StringBuilder builder = new StringBuilder();
for (Object o : objects) {
    builder.append(o);
    builder.append(glue);
builder.setLength(builder.length() - 1);
return builder.toString();
Stringjoin(Collection paramCollection, String paramString)
join 
StringBuffer localStringBuffer = new StringBuffer();
while (paramCollection.iterator().hasNext()) {
    localStringBuffer.append("'" + paramCollection.iterator().next() + "'");
    if (!paramCollection.iterator().hasNext())
        continue;
    localStringBuffer.append(paramString);
return localStringBuffer.toString();
...
Stringjoin(Collection parts, String sep)
join 
StringBuffer sb = new StringBuffer();
int counter = 0;
for (Object o : parts) {
    if (counter != 0) {
        sb.append(sep);
    sb.append(o);
    counter++;
...
Stringjoin(Collection s, String delimiter)
Join a collection, akin to Perl's join(), using a given delimiter to produce a single String 
if (s == null) {
    throw new IllegalArgumentException("Collection to join must not be null");
StringBuffer buffer = new StringBuffer();
Iterator iter = s.iterator();
while (iter.hasNext()) {
    buffer.append(iter.next());
    if (iter.hasNext() && delimiter != null) {
...
Stringjoin(Collection s, String delimiter, boolean doQuote)
Join the Collection of Strings using the specified delimter and optionally quoting each 
StringBuffer buffer = new StringBuffer();
Iterator iter = s.iterator();
while (iter.hasNext()) {
    if (doQuote) {
        buffer.append("\"" + iter.next() + "\"");
    } else {
        buffer.append(iter.next());
    if (iter.hasNext()) {
        buffer.append(delimiter);
return buffer.toString();