Android 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... collections)
join 
return join(",", collections);
Stringjoin(String conjunction, Collection... collections)
join 
int length = collections.length;
if (length == 0)
    return null;
Collection<Object> collection = (Collection<Object>) collections[0];
if (length > 1) {
    for (int i = 1; i < length; i++) {
        collection.addAll(collections[i]);
StringBuilder sb = new StringBuilder();
boolean first = true;
for (Object obj : collection) {
    if (obj == null)
        break;
    if (first)
        first = false;
    else
        sb.append(conjunction);
    sb.append(obj.toString());
return sb.toString();
StringsuffixAndJoin(String suffix, String delimiter, Collection values)
suffix And Join 
String result = join(suffix + delimiter, values);
return isEmpty(result) ? result : result + suffix;
StringtoString(Collection collection, String separator)
Returns a String representation of the given collection by separating the elements with the given separator. 
if (collection == null || collection.isEmpty()) {
    return "";
StringBuilder builder = new StringBuilder();
int count = collection.size();
for (Object obj : collection) {
    builder.append(obj);
    if (--count > 0) {
...
Stringjoin(Collection collection, String s)
join 
String s1;
if (collection.size() == 0) {
    s1 = "";
} else {
    StringBuilder stringbuilder = new StringBuilder();
    for (Iterator iterator = collection.iterator(); iterator
            .hasNext();) {
        String s2 = (String) iterator.next();
...
Stringjoin(Collection strings, String sep)
Join a collection of strings by a seperator 
return join(strings.iterator(), sep);
Stringjoin(Collection strings, String sep)
Join a collection of strings by a seperator 
return join(strings.iterator(), sep);
Stringjoin(final Collection strings, String delimeter)
Convenience function for joining strings using a delimeter 
if (delimeter == null) {
    delimeter = ",";
if (strings.isEmpty()) {
    return "";
StringBuffer joined = new StringBuffer();
Iterator<?> stringIter = strings.iterator();
...
Stringjoin(Collection collection, String delimiter)
Joins all items in the `collection` into a `string`, separated by the given `delimiter`. 
if (collection == null)
    return "";
StringBuilder buffer = new StringBuilder();
Iterator<?> iter = collection.iterator();
while (iter.hasNext()) {
    buffer.append(iter.next());
    if (iter.hasNext()) {
        buffer.append(delimiter);
...
Stringjoin(Collection s, String delimiter)
perform join operation on specified String collection sperated by specified delimiter 
if (s == null || s.isEmpty()) {
    return "";
StringBuilder builder = new StringBuilder();
Iterator<String> iter = s.iterator();
while (iter.hasNext()) {
    builder.append(iter.next());
    if (!iter.hasNext()) {
...