Java Utililty Methods Set Copy

List of utility methods to do Set Copy

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Set Copy

Description

The list of methods to do Set Copy are organized into topic(s).

Method

target.addAll(source);

Set copy(Set data)
Copies the given Set into a new Set .

final int size = data.size();
switch (size) {
case 0:
 return Collections.emptySet();
case 1:
 return Collections.singleton(data.iterator().next());
default:
 return Collections.unmodifiableSet(new HashSet<T>(data));
...

Set copyFeatureSet(Set o)
copy Feature Set

Set<String> res = new HashSet<>();
for (String s : o) {
 res.add(s);
return res;

void copySet(Set src, Set dest)
copy Set

for (Iterator<E> it = src.iterator(); it.hasNext();) {
 dest.add(it.next());

Set copyToSet(Iterable elements)
copy To Set

Set<E> set = new LinkedHashSet<E>();
addAll(set, elements);
return set;