Java Utililty Methods Collection Empty

List of utility methods to do Collection Empty

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Description

The list of methods to do Collection Empty are organized into topic(s).

Method

booleanisEmptyCollection(Collection col)
is Empty Collection 
if (col == null || col.isEmpty()) {
    return true;
return false;
booleanisEmptyCollection(Collection collection)
is Empty Collection 
if (collection != null) {
    return collection.size() == 0;
return true;
booleanisEmptyCollection(Object obj)
is Empty Collection 
return obj == null || ((Collection) obj).size() == 0;
booleanisEmptyCollection(Object object)
is Empty Collection 
if (object instanceof Collection<?>) {
    Collection<?> collection = (Collection<?>) object;
    return isEmpty(collection);
} else {
    return false;
voidisEmptyException(Collection collection)
This method throws an IllegalArgumentException if the given collection is empty. 
if (collection.isEmpty()) {
    throw new IllegalArgumentException("The given collection cannot be empty.");
booleanisEmptyNotesField(Collection col)
Tests a collection retrieved by lotus.domino.Document.getItemValue() if it is an empty notes field. 
if (col == null || col.size() == 0 || (col.size() == 1 && col.toArray()[0].equals(""))) {
    return true;
} else {
    return false;
booleanisEmptyString(Collection theCollection)
Returns if the collection contains only empty objects (i.e. 
if (theCollection == null) {
    return false;
boolean bReturn = true;
for (T theObject : theCollection) {
    if (!theObject.toString().isEmpty()) {
        bReturn = false;
return bReturn;
booleanisNonEmpty(Collection coll)
is Non Empty 
return !isNullOrEmpty(coll);
booleanisNonEmpty(final Collection values)
is Non Empty 
return !isEmpty(values);
booleanisNotEmpty(@SuppressWarnings("rawtypes") Collection collection)
is Not Empty 
return !isEmpty(collection);