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> toImmutableList(List<T> list) {
    switch (list.size()) {
    case 0:// ww w  . ja va2s.c o  m
        return Collections.emptyList();
    case 1:
        return Collections.singletonList(list.get(0));
    default:
        return Collections.unmodifiableList(list);
    }
}

From source file:Main.java

/**
 * /*  w w  w  . j av  a  2  s  . co m*/
 * Returns an unmodifiable view of the specified list. This method makes use
 * of the method unmodifiableList of java.util.Collections and returns an
 * empty list if the provided list is null.
 * 
 * @param list
 * @return
 * @see java.util.Collections.unmodifiableList
 */
public static <T> List<T> unmodifiableList(List<? extends T> list) {
    if (list == null) {
        return Collections.emptyList();
    } else {
        return Collections.unmodifiableList(list);
    }
}

From source file:Main.java

public static <T> List<T> list(List<T> ts) {
    return Collections.unmodifiableList(new ArrayList<>(ts));
}

From source file:Main.java

public static <A> List<A> cons(A a, List<A> as) {
    List result = new ArrayList<>(as);
    result.add(0, a);/*from   w  w w.j  av a2 s .co  m*/
    return Collections.unmodifiableList(result);
}

From source file:Main.java

public static <T> List<T> toUnmodifiableCopy(Collection<T> collection) {
    return Collections.unmodifiableList(new ArrayList<T>(collection));
}

From source file:Main.java

private static List<String> list(String... values) {
    return Collections.unmodifiableList(Arrays.asList(values));
}

From source file:Main.java

public static <T> List<T> immutableList(List<T> list) {
    return Collections.unmodifiableList(new ArrayList<>(list));
}

From source file:Main.java

/** Returns an immutable copy of {@code list}. */
public static <T> List<T> immutableList(List<T> list) {
    return Collections.unmodifiableList(new ArrayList<T>(list));
}

From source file:Main.java

@SafeVarargs
public static <T> List<T> makeUnmodifiableList(T... items) {
    ArrayList<T> list = new ArrayList<>(items.length);
    Collections.addAll(list, items);
    return Collections.unmodifiableList(list);
}

From source file:Main.java

@SafeVarargs
public static <T> List<T> list(T... t) {
    return Collections.unmodifiableList(Arrays.asList(Arrays.copyOf(t, t.length)));
}