Example usage for java.util List remove

Introduction

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

Prototype

E remove(int index);

Source Link

Document

Removes the element at the specified position in this list (optional operation).

Usage

From source file:Main.java

public static <T> List<T> subtract(final Collection<T> a, final Collection<T> b) {
    List<T> list = new ArrayList<T>(a);
    for (T element : b) {
        list.remove(element);
    }//from  w  w w  .  j av  a2s. com

    return list;
}

From source file:com.textocat.textokit.commons.util.TrainDevTestCorpusSplitter.java

private static <T> T getAndRemove(List<T> list, int index) {
    T result = list.get(index);// ww  w  . ja  va2 s.c o m
    list.remove(index);
    return result;
}

From source file:Main.java

public static void removeRange(List list, int start, int count) {
    for (int i = start + count - 1; i >= start; i--) {
        list.remove(i);
    }//  ww w .  j  a va  2  s  . c  om
}

From source file:Main.java

public static <E> E removeReplace(List<E> list, int index) {
    int lastIdx = list.size() - 1;
    E last = list.remove(lastIdx);
    if (lastIdx != index) {
        list.set(index, last);//from  w  ww.j  av a2s . c om
        return last;
    }
    return null;
}

From source file:Main.java

public static <E> E removeIfInBounds(final List<E> list, final int index) {
    return (list != null) && (index >= 0) && (index < list.size()) ? list.remove(index) : null;
}

From source file:Main.java

public static List<String> merge(final List<String> list, final int index) {
    if (list.isEmpty()) {
        throw new IndexOutOfBoundsException("Cannot merge empty list");
    } else if (index + 1 >= list.size()) {
        throw new IndexOutOfBoundsException("Cannot merge last element");
    } else {//from  ww w.j a  v  a 2s .c  o m
        final List<String> result = new ArrayList<String>(list);
        result.set(index, list.get(index) + list.get(index + 1));
        result.remove(index + 1);
        return result;
    }
}

From source file:Main.java

public static <E> void removeLast(List<E> list) {
    if (isEmpty(list)) {
        return;//from   ww w .ja v  a 2  s.  c  om
    }
    list.remove(list.size() - 1);
}

From source file:Main.java

@Nullable
public static <ELEMENTTYPE> ELEMENTTYPE removeFirstElement(@Nullable final List<ELEMENTTYPE> aList) {
    return isEmpty(aList) ? null : aList.remove(0);
}

From source file:Main.java

/**
 * Remove an element from a map whose values are lists of elements.
 * @param <T> the type of the keys in the map.
 * @param <U> the type of the elements in the lists.
 * @param key the key for the value to remove.
 * @param value the value to remove./*from w w  w.j  a  v a  2s  .  co m*/
 * @param map the map from which to remove the key/value pair.
 */
public static <T, U> void removeFromListMap(T key, U value, Map<T, List<U>> map) {
    List<U> list = map.get(key);
    if (list == null)
        return;
    list.remove(value);
    if (list.isEmpty())
        map.remove(key);
}

From source file:Main.java

private static <T> T remove(List<T> list, int position) {
    if (list.isEmpty())
        return null;
    return list.remove(position);
}