将Iterable转换为Set

//package com.nowjava;/**来自 时 代 J a v a - nowjava.com**/


import java.util.Collection;

import java.util.Collections;


import java.util.HashSet;


import java.util.Set;


public class Main {

    public static <T> Set<T> asSet(final Iterable<? extends T> iterable) {

        return (iterable instanceof Collection) ? new HashSet<T>(

                (Collection<? extends T>) iterable) : new HashSet<T>() {

            private static final long serialVersionUID = 3109256773218160485L;

            {

                if (iterable != null) {

                    for (final T t : iterable) {/** 来 自 时   代    Java - nowjava.com**/

                        add(t);

                    }

                }

            }

        };

    }


    public static <T> Set<T> asSet(final T t,