Java Collections Java Java API
java.util.Collections
public static <T> Set<T> singleton(T o)
Returns an immutable set containing only the specified object.
package com.logicbig.example.collections;import java.util.Collections;import java.util.Set;public class SingletonExample { public static void main(String... args) { Set<String> set = Collections.singleton("one"); System.out.println(set); }}
[one]