Example usage for java.util List size

Introduction

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

Prototype

int size();

Source Link

Document

Returns the number of elements in this list.

Usage

From source file:Main.java

public static <T> T fifth(List<T> list) {
    if (list.size() < 5) {
        throw new NoSuchElementException("Collection does not have a enough elements");
    }/*from w  ww .  j a va2 s  .c  o m*/
    return list.get(4);
}

From source file:Main.java

/**
 * /*from   w ww.j av  a  2 s. c o m*/
 * @param <T>
 * @param list
 * @return
 */
public static <T> T getFirstElementFromList(List<T> list) {
    return list.size() > 0 ? list.get(0) : null;
}

From source file:Main.java

public static <E> E last(List<E> list) {
    return list.get(list.size() - 1);
}

From source file:Main.java

private static <T> List<T> deleteAll(List<T> list, T valueToDelete) {
    List<T> result = new ArrayList<T>(list.size());
    for (T value : list) {
        if (!value.equals(valueToDelete)) {
            result.add(value);/* w  w  w  .j  av a  2  s  .  co m*/
        }
    }
    return result;
}

From source file:Main.java

public static boolean isEmptyList(List<?> l) {
    return l == null || l.size() == 0;
}

From source file:Main.java

public static <E> E safeGet(List<E> list, int index) {
    return list.size() > index ? list.get(index) : null;
}

From source file:Main.java

public static <I> boolean isEmpty(List<I> xs) {
    return xs == null || xs.size() == 0;
}

From source file:Main.java

public static <T> List<T> tail(List<T> list) {
    if (list.size() == 0) {
        throw new IllegalStateException("tail of empty list");
    }//from   w ww  . jav  a2s.  co  m
    List<T> workList = copy(list);
    workList.remove(0);
    return Collections.unmodifiableList(workList);
}

From source file:Main.java

public static boolean isEmpty(List list) {
    return list == null || list.size() < 1;
}

From source file:Main.java

public static boolean emptyList(List list) {
    return list == null || list.size() == 0;
}