Java Collection Search hasElements(Collection collection)

Description

Checks whether the COLLECTION is not NULL and has at least one element.

License

Apache License

Parameter

Parameter	Description
T	the generic type
collection	the collection

Return

true, if successful

Declaration

public static <T> boolean hasElements(Collection<T> collection) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.Collection;

import java.util.Map;

public class Main {
    /**//ww  w  .ja va2  s. com
     * Checks whether the COLLECTION is not NULL and has at least one element.
     * 
     * @param <T>
     *            the generic type
     * @param collection
     *            the collection
     * @return true, if successful
     */
    public static <T> boolean hasElements(Collection<T> collection) {
        return (null != collection && collection.size() > 0);
    }

    /**
     * Checks whether the MAP is not NULL and has at least one element.
     * 
     * @param <T>
     *            the generic type
     * @param <V>
     *            the value type
     * @param map
     *            the map
     * @return true, if successful
     */
    public static <T, V> boolean hasElements(Map<T, V> map) {
        return (null != map && map.size() > 0);
    }
}

Related

1. getSingleElement(Collection collection)
2. getSingleItem(Collection values)
3. getSingleValue(Iterable collection)
4. hasElements(Collection c)
5. hasElements(Collection c)
6. hasElements(Collection t)
7. hashCapacityFor(Collection collection)
8. hasLength(final Collection collection)
9. hasNoValue(Collection collection)