Example usage for java.util List get

Introduction

In this page you can find the example usage for java.util List get.

Prototype

E get(int index);

Source Link

Document

Returns the element at the specified position in this list.

Usage

From source file:Main.java

public static <T> T previous(List<T> items, T t) {
    int i = items.indexOf(t);
    return i != -1 ? items.get((i + items.size() - 1) % items.size()) : null;
}

From source file:Main.java

public static <T> T getLast(List<T> list) // NO_UCD (unused code)
{
    return isNullOrEmpty(list) ? null : list.get(list.size() - 1);
}

From source file:Main.java

/**
 * Returns an array of aList items in the same order than the {@link List}.
 *
 * @param aList//  ww w .  j a va2 s  . c o m
 *         {@link List} to transform.
 *
 * @return {@link T[]} array of aList items in the same order than the {@link List}.
 *
 * @since 1
 */
public static <T> T[] toArray(List<T> aList) {
    T[] result = (T[]) Array.newInstance(aList.get(0).getClass(), 2);
    result = aList.toArray(result);
    return result;
}

From source file:Main.java

public static <T> T zeroOrOne(List<? extends T> items) {
    return items == null || items.isEmpty() ? null : items.get(0);
}

From source file:Main.java

static <T extends Comparable<T>> T getNthElement(int n, List<T> list) {
    List<T> newList = new ArrayList<T>(list);
    Collections.sort(newList);//from ww w. j  av  a2  s.c om
    return newList.get(n);
}

From source file:Main.java

/**
 * Returns first item in the list if list is not empty.
 *
 * @param list The list to get first item from.
 *///from www. j av a2  s .c  o m
@Nullable
public static <T> T first(@Nullable final List<T> list) {
    return (list == null || list.isEmpty() ? null : list.get(0));
}

From source file:Main.java

public static <V> Object getAdapterItem(List<V> mList, int position) {
    return (mList == null || position >= mList.size()) ? null : mList.get(position);
}

From source file:Main.java

public static <T> T get(Collection<T> c, int index) {
    if (isEmpty(c))
        return null;

    if (index < 0 || index >= c.size())
        return null;

    if (c instanceof List)
        return (T) ((List<T>) c).get(index);

    List<? extends T> a = new ArrayList<T>(c);
    return a.get(index);
}

From source file:Main.java

public static <T> T getOrDefault(List<T> list, int position, @Nullable T defaultValue) {
    try {//from   www.jav a 2 s  . co m
        return list.get(position);
    } catch (Exception e) {
        return defaultValue;
    }
}

From source file:Main.java

/**
 * Returns last item in {@link List}.//  ww  w.  j ava 2  s.co  m
 * @param <T> type
 * @param t T
 * @return T
 */
public static <T> T last(final List<T> t) {
    return t != null && t.size() > 0 ? t.get(t.size() - 1) : null;
}