Java Utililty Methods List Cast

List of utility methods to do List Cast

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Description

The list of methods to do List Cast are organized into topic(s).

Method

java.util.ListcastListUnchecked(Object list)
cast List Unchecked 
return (java.util.List<T>) list;
ListcastNonNullListParameterTo(String parameterName, List value, Class requiredType)
cast Non Null List Parameter To 
if (value == null) {
    throw new IllegalArgumentException(parameterName + " is null");
for (T entry : value) {
    if (entry == null) {
        throw new IllegalArgumentException("One entry of " + parameterName + " is null.");
    if (!requiredType.isInstance(entry)) {
...
ListcastOrCopyToList(Iterable iterable)
cast Or Copy To List 
if (iterable instanceof List) {
    return (List<E>) iterable;
List<E> list = new ArrayList<E>();
for (E e : iterable) {
    list.add(e);
return list;
...
ListcastTo(final List list, final Class clasz)
cast To 
if (isOf(list, clasz)) {
    return (List<E>) list;
throw new IllegalArgumentException("List contains invalid type.");
List>castToDocumentList(Object obj)
Casts the specified object to a List> . 
@SuppressWarnings("unchecked")
final List<Map<String, Object>> list = (List<Map<String, Object>>) obj;
return list;
ListcastToList(U[] array, Class clazz)
Convert an array to a list of a different type. 
final List<T> res = new ArrayList<T>(array.length);
for (final U item : array) {
    res.add(clazz.cast(item));
return res;
ListcastToStringList(Object value)
cast To String List 
List<String> result;
try {
    result = (List<String>) value;
} catch (Exception e) {
    result = null;
if (result == null) {
    return new ArrayList<String>();
...
booleanIS_CASTABLE_LIST(Class className, Object obj)
ICASTABLLIST 
if (!(obj instanceof List))
    return false;
for (Object o : (List<?>) obj)
    if (!className.isInstance(o))
        return false;
return true;
StringlistToJsonArray(List ll, Class toCast, String jsonArrayKey)
list To Json Array 
StringBuilder temp = new StringBuilder();
try {
    boolean hasData = false;
    Iterator ite = ll.listIterator();
    temp.append("{\"");
    temp.append(jsonArrayKey);
    temp.append("\":[");
    while (ite.hasNext()) {
...
ListtoStringList(List uncastedValues)
to String List 
List<String> values = new ArrayList<String>(uncastedValues.size());
for (Object object : uncastedValues) {
    values.add(String.valueOf(object));
return values;