Example usage for java.util Collections unmodifiableList

Introduction

In this page you can find the example usage for java.util Collections unmodifiableList.

Prototype

public static <T> List<T> unmodifiableList(List<? extends T> list)

Source Link

Document

Returns an unmodifiable view of the specified list.

Usage

From source file:Main.java

public static <T> List<T> nullTolerantUnmodifiableList(List<? extends T> l) {
    return l == null ? Collections.<T>emptyList() : Collections.unmodifiableList(l);
}

From source file:Main.java

/**
 * Make a list map immutable.//from   w  w  w.  j a v  a 2 s  .  c o m
 *
 * @param listMap
 *            the list map in input.
 * @return the immutable list map.
 */
public static <C, E> Map<C, List<E>> makeListMapImmutable(Map<C, List<E>> listMap) {
    for (C key : listMap.keySet()) {
        listMap.put(key, Collections.unmodifiableList(listMap.get(key)));
    }

    return Collections.unmodifiableMap(listMap);
}

From source file:com.omnigon.aem.common.utils.PojoUtils.java

public static <T> List<T> safeUnmodifiableList(List<T> list) {
    return CollectionUtils.isNotEmpty(list) ? Collections.unmodifiableList(list) : Collections.<T>emptyList();
}

From source file:com.iblsoft.iwxxm.webservice.ws.TestUtils.java

public static List<String> loadTestResources(String[] resourcePaths) throws Exception {
    List<String> messages = new ArrayList<>(resourcePaths.length);
    for (String resourceName : resourcePaths) {
        messages.add(loadTestResource(resourceName));
    }/*from  w w  w . j  a v  a 2 s  .  c o  m*/
    return Collections.unmodifiableList(messages);
}

From source file:Main.java

public static <T> List<T> toUnmodifiableList(Iterable<? extends T> i) {
    ArrayList<T> result = toArrayList(i);
    result.trimToSize();//from  w  w  w .j  a  va  2s .  co  m
    return Collections.unmodifiableList(result);
}

From source file:Main.java

/**
 * @return an <b>UNMODIFIABLE</b> List&lt;T&gt;
 *//*from  w  w  w .ja v a2 s. c om*/
public static <T> List<T> unmodifiableList(final List<? extends T> l) {
    return (l == null) ? Collections.<T>emptyList() : Collections.unmodifiableList(l);
}

From source file:com.trenako.utility.Utils.java

/**
 * Creates an immutable {@code ArrayList} filled with
 * the {@code Iterable} elements./*  w ww  .j  a  va2 s .c  o  m*/
 *
 * @param elements the elements to be added
 * @return the {@code ArrayList}
 */
public static <E> List<E> newList(final Iterable<E> elements) {
    List<E> list = new ArrayList<>();
    for (E el : elements) {
        list.add(el);
    }
    return Collections.unmodifiableList(list);
}

From source file:Main.java

/**
 * Returns a read-only list. The list is backed by the original so no copy is made.
 *
 * @param <T> The type of the list
 * @param list The list or null./*  w w  w .  j  a va2 s  .c  om*/
 * @return A read-only proxy on the original list.
 */
public static <T> List<T> asReadOnlyList(List<T> list) {
    if (list == null) {
        list = new ArrayList<>();
    }
    return Collections.unmodifiableList(list);
}

From source file:Main.java

public static <E> Collection<List<E>> selectUpTo(List<E> original, int nb) {
    final List<List<E>> result = new ArrayList<List<E>>();
    for (int i = 1; i <= nb; i++) {
        result.addAll(selectExactly(original, i));
    }/*from   w w  w .j a v a2  s .c  om*/
    return Collections.unmodifiableList(result);
}

From source file:Main.java

/**
 * Wraps a List with the {@code Collections.unmodifiableList}, but only once.
 *
 * <p>Checks the {@link List} passed to ensure that it is not already a {@code Collections.unmodifiableLisy}.
 * If the parameter is a null or empty, then it returns {@code Collections.emptyList}.
 *
 * @param list {@link List} to wrap with {@code Collections.unmodifiableList}
 * @param <V>  Value type//w w w  . ja v  a 2  s.c o m
 * @return An unmodifiable List.
 */
public static <V> List<V> unmodifiableList(final List<V> list) {
    if (isNotEmpty(list)) {
        if (!(exampleUnmodifiableList.getClass().equals(list.getClass()))) {
            return Collections.unmodifiableList(list);
        }
        return list;
    }
    return Collections.emptyList();
}