Java Utililty Methods List Join

List of utility methods to do List Join

  1. HOME
  2. Java
  3. L
  4. List Join

Description

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

Method

StringjoinList(List list, String separator)
join List 
String rtVal = "";
if (separator == null)
    separator = ",";
Iterator it = list.iterator();
while (it.hasNext()) {
    rtVal += (String) it.next() + separator;
if (rtVal.length() > 1)
...
StringjoinList(List items)
joins a list of elements eg [a, b, c] into a string of the form: "a", "b", "c" if the list is empty: returns "\"\"" (that is, a string containing two " characters, not an empty string) 
return "\"" + String.join("\", \"", items) + "\"";
StringjoinList(List list, String glue)
join List 
Iterator<String> i = list.iterator();
if (i.hasNext() == false) {
    return "";
StringBuffer res = new StringBuffer();
res.append(i.next());
while (i.hasNext()) {
    res.append(glue + i.next());
...
StringjoinList(List list, String separator)
join List 
if (list == null) {
    return null;
int size = list.size();
if (size == 0) {
    return "";
} else if (size == 1) {
    return list.get(0);
...
StringjoinList(List parts, String sep)
Join a List of Strings with a separator. 
if (parts == null || parts.isEmpty()) {
    return "";
StringBuilder sb = new StringBuilder();
boolean first = true;
for (String part : parts) {
    if (first) {
        first = false;
...
StringjoinList(String separater, List list)
Join a list of string together 
String result = "";
for (int i = 0; i < list.size(); i++) {
    result = result + list.get(i) + separater;
if (!result.equals("")) {
    result = result.substring(0, result.length() - separater.length());
return result;
...
ListjoinLists(final List> lists)
Joins the items of multiple lists into one list. 
if (lists.size() == 0) {
    return new ArrayList<GPItem>(0);
final List<GPItem> joined = new ArrayList<GPItem>(lists.size() * lists.get(0).size());
for (final List<GPItem> list : lists) {
    joined.addAll(list);
return joined;
...
ListjoinLists(List A, List B, double epsilon)
Join together 2 ordered lists of doubles into a single, ordered list without duplicates. 
List<Double> C = new ArrayList<Double>();
int nA = 0;
int NA = A.size();
double a = A.get(nA);
int nB = 0;
int NB = B.size();
double b = B.get(nB);
while (nA < NA || nB < NB) {
...
ListjoinLists(List... list)
join Lists 
List<T> result = new ArrayList<T>();
for (List<T> list2 : list) {
    result.addAll(list2);
return result;
StringjoinListToString(List lsStr, String sSeparator)
join List To String 
StringBuilder builder = new StringBuilder();
boolean firstOcc = true; 
if (lsStr.size() == 1 && lsStr.get(0).equals("")) {
    return "";
for (int i = 0; i < lsStr.size(); i++) {
    if (firstOcc) {
        firstOcc = false;
...