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Java Collections - Collections.singleton() Examples

Java Collections Java Java API

Class:

java.util.Collections

Method:

public static <T> Set<T> singleton(T o)

Returns an immutable set containing only the specified object.

Examples

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);
    }
}

Output

[one]

See Also