42 lines
1.1 KiB
Java
42 lines
1.1 KiB
Java
package uebung09.collection;
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public class SetFactory {
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private SetFactory() { /* don't instantiate */ }
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/**
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* Returns the empty set.
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*
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* @param <T> the element type of the returned set.
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* @return the empty set.
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*/
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static <T> Set<T> create() {
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// TODO implement
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return null;
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}
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/**
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* Returns the singleton set containing the specified element.
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*
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* @param element an element (must not be null)
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* @param <T> the element type of the returned set.
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* @return the singleton set containing the specified element.
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*/
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static <T> Set<T> create(T element) {
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// TODO implement
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return null;
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}
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/**
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* Returns a set containing the specified elements. The specified elements may contain equal elements.
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*
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* @param elems elements of the returned set (may contain equal elements)
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* @param <T> the element type of the returned set.
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* @return a set containing the specified elements.
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*/
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static <T> Set<T> create(T... elems) {
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// TODO implement
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return null;
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}
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}
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