Example usage for java.util Collection isEmpty

Introduction

In this page you can find the example usage for java.util Collection isEmpty.

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this collection contains no elements.

Usage

From source file:Main.java

/**
 * @param col/* www  .  java2  s  .  co m*/
 * @return
 */
public static boolean checkEmpty(Collection<?> col) {
    return null == col || col.isEmpty();
}

From source file:Main.java

/**
 * Method to verify if a collection is empty (including null).
 *
 * @param col a {@link java.util.Collection} object.
 * @return a boolean.// www. j  a v a 2 s  .  c o m
 */
public static boolean isEmpty(Collection col) {
    return (col == null || col.isEmpty());
}

From source file:Main.java

public static <T> boolean isEmpty(Collection<T> coll) {
    return (coll == null || coll.isEmpty());
}

From source file:Main.java

public static <T> boolean doesNotContainNull(Collection<T> collection) {
    if (collection.isEmpty()) {
        return true;
    }/*from   www  .  j  av  a2 s  .co m*/
    for (T t : collection) {
        if (t == null) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

public static <E> boolean hasElements(Collection<E> c) {
    return c != null && !c.isEmpty();
}

From source file:Main.java

public static <T> boolean isNotEmpty(Collection<T> list) {
    return list != null && !list.isEmpty();
}

From source file:Main.java

public static boolean isEmpty(Collection array) {
    return array == null || array.isEmpty();
}

From source file:Main.java

public static String[] toArray(Collection<String> strings) {
    if (strings.isEmpty()) {
        return EMPTY_STRING_ARRAY;
    }/*from  w  w  w.  j  a v  a2 s  .  c o m*/
    return strings.toArray(new String[strings.size()]);
}

From source file:Main.java

public static <T> boolean isEmpty(Collection<T> coll) {
    return (coll == null) || coll.isEmpty();
}

From source file:Main.java

public static boolean isNullOrEmpty(final Collection<?> c) {
    return c == null || c.isEmpty();
}