Java Utililty Methods Set Copy

List of utility methods to do Set Copy

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Description

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

Method

voidcopy(Set source, Set target)
copy 
target.addAll(source);
Setcopy(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));
...
SetcopyFeatureSet(Set o)
copy Feature Set 
Set<String> res = new HashSet<>();
for (String s : o) {
    res.add(s);
return res;
voidcopySet(Set src, Set dest)
copy Set 
for (Iterator<E> it = src.iterator(); it.hasNext();) {
    dest.add(it.next());
SetcopyToSet(Iterable elements)
copy To Set 
Set<E> set = new LinkedHashSet<E>();
addAll(set, elements);
return set;