Returns of set of the objects given in the vararg. - Java java.util

Java examples for java.util:Set Operation

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Description

Returns of set of the objects given in the vararg.

Demo Code


//package com.java2s;
import java.util.*;

public class Main {
    /**/*  ww  w  .j ava 2 s . c  o m*/
     * Returns of set of the objects given in the vararg.
     *
     * @param contents the objects to return in the set.
     * @param <T> the class the given objects are instantiations of.
     * @return a set containing the given contents.
     * @throws AssertionError if any of the contents are not the same type.
     */
    public static <T> Set<T> setOf(T... contents) {
        return new HashSet<T>(listOf(contents));
    }

    /**
     * Returns of linked list of the objects given in the vararg.
     *
     * @param contents the objects to return in the list.
     * @param <T>      the class the given objects are instantiations of.
     * @return a linked list containing the given contents.
     * @throws AssertionError if any of the contents are not the same type.
     */
    public static <T> List<T> listOf(T... contents) {
        // Check all items in set are of same type...
        Class first_class = null;
        for (Object item : contents) {
            if (first_class == null) {
                first_class = item.getClass();
            } else {
                assert first_class == item.getClass();
            }
        }

        return new LinkedList<T>(Arrays.asList(contents));
    }
}

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