Java Utililty Methods Collection Split

List of utility methods to do Collection Split

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Collection Split

Description

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

Method

void fastSplit(final Collection result, final String text, final char separator)
fast Split

if (text == null)
 return;
if (text.length() == 0)
 return;
int index1 = 0;
int index2 = text.indexOf(separator);
if (index2 >= 0) {
 String token = null;
...

String getCollectionStringBySplit(Collection collection, String split)
get Collection String By Split

return getArrayStringBySplit(collection.toArray(), split);

Collection getStringCollection(String str, String split)
Returns a collection of strings.

if (split == null || split.isEmpty()) {
 split = ",";
List<String> values = new ArrayList<String>();
if (str == null)
 return values;
StringTokenizer tokenizer = new StringTokenizer(str, split);
values = new ArrayList<String>();
...

String getSymbolSplitString(Collection collection, String symbol)
Return a string split by the symbol.

return getSymbolSplitString(collection.toArray(), symbol);

Collection split(Collection d, int n)
split

Collection<T> tmp = new ArrayList<>();
Iterator it = d.iterator();
int k = Math.max(0, n);
while (it.hasNext() && k > 0) {
 tmp.add((T) it.next());
 k--;
return tmp;
...

String split(Collection collections, String separator)
split

Object[] array = collections.toArray(new Object[0]);
int length = array.length;
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < length; i++) {
 stringBuilder.append(array[i]);
 if (i != length - 1) {
 stringBuilder.append(separator);
return stringBuilder.toString();

List> split(Collection orig, int batchSize)
split

if (orig == null || orig.isEmpty() || batchSize < 1) {
 return Collections.emptyList();
int size = orig.size();
int len = calSplitLen(batchSize, size);
List<List<T>> result = new ArrayList<>(len);
List<T> list = null;
if (orig instanceof List) {
...

List[] split(Collection set, int n)
Splits a collection in n new collections.

if (set.size() >= n) {
 @SuppressWarnings("unchecked")
 List<T>[] arrays = new List[n];
 int minSegmentSize = (int) Math.floor(set.size() / (double) n);
 int start = 0;
 int stop = minSegmentSize;
 Iterator<T> it = set.iterator();
 for (int i = 0; i < n - 1; i++) {
...

Collection> split(final Collection collection)
Splits a collection into several collections.

return split(collection, 500);

void splitAndKeepEscapedSpaces(String string, boolean preserveEscapes, Collection into)
split And Keep Escaped Spaces

StringBuilder current = new StringBuilder();
for (int i = 0; i < string.length(); i++) {
 char ch = string.charAt(i);
 if (ch == ' ') {
 boolean isGluedSpace = i > 0 && string.charAt(i - 1) == '\\';
 if (!isGluedSpace) {
 into.add(current.toString());
 current = new StringBuilder();
...