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

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

From source file:Main.java

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

From source file:Main.java

public static boolean isEmpty(Collection<?> collection) {
    if (collection == null || collection.isEmpty()) {
        return true;
    }/*from   ww w. jav  a 2 s. c  o m*/
    return false;
}

From source file:Main.java

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

From source file:Main.java

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

From source file:Main.java

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

From source file:Main.java

/**
 * @param coll//from www.  java 2 s. co m
 * @return (coll == null) || coll.isEmpty();
 */
public static boolean isNullOrEmpty(Collection<?> coll) {
    return (coll == null) || coll.isEmpty();
}

From source file:Main.java

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

From source file:Main.java

/**
 * Indicates whether a collection is {@code null} or empty.
 * @param c the collection to be tested//  w  w w . jav  a  2 s  .c om
 * @return {@code true} if the collection is {@code null} or empty
 */
public static <T> boolean nullOrEmpty(Collection<T> c) {
    return null == c || c.isEmpty();
}

From source file:Main.java

public static String join(Collection<?> coll, String delimiter) {
    if (coll.isEmpty()) {
        return "";
    }// ww w.j  a v a 2 s  . c om
    Iterator<?> it = coll.iterator();
    String s = String.valueOf(it.next());
    while (it.hasNext()) {
        s += delimiter;
        s += String.valueOf(it.next());
    }
    return s;
}