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 String getSingleNodeTextContent(Node node, String path) {
    List nodeList = getNodes(node, path);

    if ((nodeList.size() > 0) && (nodeList.get(0) != null)
            && (((Node) nodeList.get(0)).getTextContent().length() > 0)) {
        return ((Node) nodeList.get(0)).getTextContent();
    }//  ww w . jav  a  2  s .  co  m
    return null;
}

From source file:Main.java

public static Double getMaxElement(List<Double> list) {
    Double max = -1000d;/*from w  ww  .j  a  v a2s. co m*/
    for (int i = 0; i < list.size(); i++) {
        if (list.get(i).compareTo(max) > 0) {
            max = list.get(i);
        }
    }
    return max;
}

From source file:Main.java

/**
 * Random parameter returns random item from list.
 * /*  ww  w.j av  a  2 s .co  m*/
 * @param <E>
 *            Class for list where you get random item.
 * @param e
 *            A random parameter for the array.
 * @return A random item from a list.
 */
public static <E> E randomItem(List<E> e) {
    if (e.isEmpty()) {
        return null;
    }
    return e.get(RANDOM.nextInt(e.size()));
}

From source file:Main.java

public static <T> T getLast(List<T> list) {
    if (isEmpty(list)) {
        return null;
    }//www .  j  a va 2s . co  m
    return list.get(list.size() - 1);
}

From source file:Main.java

/**
 * exception safe access of an element of a list by index.
 *
 * @param list// w w  w.j av a 2 s  .  c  om
 * @param index
 * @return null if the index is out of the list bounds or the element is null by itself.
 */
public static <T> T getElement(List<T> list, int index) {
    if (index >= 0 && index < list.size()) {
        return list.get(index);
    }
    return null;
}

From source file:Main.java

private static <T> T get(List<T> list, int index) {
    if (list.size() <= index)
        return null;
    return list.get(index);
}

From source file:Main.java

public static double position(String s, List<String> ss) {
    double p = -1d;
    for (int i = 0; i < ss.size(); i++) {
        if (s.equals(ss.get(i))) {
            p = Double.parseDouble(i + "");
            break;
        }//from w  w  w .  j ava 2  s  .c om
    }
    return p;
}

From source file:Main.java

/**
 * Determines if the given list is sorted (in ascending order).
 * @param list The <code>List</code> to examine.
 * @return A value indciating whether the list is sorted in ascending
 *     order.//from ww w .ja  v  a 2  s  . co m
 */
public static <T extends Comparable<? super T>> boolean isSorted(List<T> list) {
    for (int i = 1, n = list.size(); i < n; i++) {
        if (list.get(i - 1).compareTo(list.get(i)) > 0) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

/**
 * Get Value at Index or default value./*ww w  .  jav a 2s.  co m*/
 * @param <T> T
 * @param list {@link List}
 * @param index int
 * @param defaultValue default value
 * @return T return value
 */
public static <T> T get(final List<T> list, final int index, final T defaultValue) {

    try {
        return list.get(index);
    } catch (IndexOutOfBoundsException e) {
        return defaultValue;
    }
}

From source file:Main.java

public static <T> T getLastOrNull(List<T> l) {
    final int size = l.size();
    if (size == 0)
        return null;
    return l.get(size - 1);
}