CollectionUtils.java

package com.telenor.security.sso.api.service.utils;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * @author <a href="mailto:vegard.aasen@telenor.com">Vegard Aasen</a>
 * @since 21:38
 */
public class CollectionUtils {

    private CollectionUtils() {
    }

    public static <E> List<E> toList(Iterable<E> iter) {
        if (iter == null || iter.iterator() == null || !iter.iterator().hasNext()) {
            return Collections.emptyList();
        }
        final List<E> list = new ArrayList<>();
        for (final E item : iter) {
            list.add(item);
        }
        return list;
    }

}