Java Utililty Methods String Join

String invertPhoneNumber(String storedNumber, String joinString)
invert Phone Number

String prefix = String.join("", Arrays.asList("0", storedNumber.substring(2, 4)));
String midnumbers, finalnumbers;
try {
 midnumbers = storedNumber.substring(4, 7);
 finalnumbers = storedNumber.substring(7, 11);
} catch (Exception e) { 
 midnumbers = storedNumber.substring(4);
 finalnumbers = "";
...

String Join(ArrayList list, String delimiter)
This method converts a list of String objects to a single String representation and inserts a delimiter between each object.

if (list.isEmpty())
 return "";
StringBuilder sb = new StringBuilder();
for (String x : list)
 sb.append(x + delimiter);
sb.delete(sb.length() - delimiter.length(), sb.length());
return sb.toString();

String join(boolean endSlash, Collection paths)
join

if (paths == null || paths.isEmpty()) {
 return null;
boolean prevLastSlash = false;
StringBuilder buffer = new StringBuilder();
for (String param : paths) {
 if (param == null)
 continue;
...

String join(Collection collection, String separator)
Join an collection of objects with a separator that appears after every instance in the list -including at the end

return join(collection, separator, true);

String join(Collection items, String delimiter)
Returns all items, concatenated as a string with each of the entries divided by the delimiter.

return join(items, delimiter, 0, items.size());

String join(Enumeration enumeration, String s)
join

StringBuffer stringbuffer = new StringBuffer();
while (enumeration.hasMoreElements()) {
 String s1 = (String) enumeration.nextElement();
 stringbuffer.append(s1);
 if (enumeration.hasMoreElements()) {
 stringbuffer.append(s);
return stringbuffer.toString();

String join(Enumeration values, CharSequence separator)
Concatenates all of the strings in an Enumeration.

StringBuilder builder = new StringBuilder();
CharSequence prefix = "";
while (values.hasMoreElements()) {
 builder.append(prefix);
 builder.append(values.nextElement().toString());
 prefix = separator;
return builder.toString();
...

String join(final Collection input, final String link)
Join parts with link.

final StringBuilder builder = new StringBuilder(Math.max(300, input.size() * 10));
boolean first = true;
for (final Object obj : input) {
 if (!first)
 builder.append(link);
 builder.append(obj.toString());
 first = false;
return builder.toString();

String join(final String sep, final Iterable strs)
Join the given strings, separated by the given separator.

final StringBuilder buf = new StringBuilder();
String prefix = "";
for (final String str : strs) {
 buf.append(prefix).append(str);
 prefix = sep;
return buf.toString();

String join(final String separator, final Collection objs)
join

if (objs.size() == 0) {
 return "";
boolean notFirst = false;
final StringBuilder ret = new StringBuilder();
for (final Object obj : objs) {
 if (notFirst) {
 ret.append(separator);
...