Java Utililty Methods ArrayList Remove

List of utility methods to do ArrayList Remove

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Description

The list of methods to do ArrayList Remove are organized into topic(s).

Method

voidremoveIndex(ArrayList arr, ArrayList idNames)
remove all the relation index for the input array 
for (Object item : arr) {
    if (item instanceof ArrayList) {
        removeIndex((ArrayList) item, idNames);
    } else if (item instanceof HashMap) {
        removeIndex((HashMap) item, idNames);
ListremoveLastValues(final ArrayList v, final int remove)
The Method removeLastValues(ArrayList, int) remove the last Values. 
if (remove < v.size()) {
    final List<T> l = v.subList(remove, v.size());
    return l;
throw new IllegalArgumentException("You cannot remove "
        + "more element than in the ArrayList exists. \nSize from ArrayList:" + v.size() + "\n"
        + "Elements to be removed:" + remove + "\n The same ArrayList will be returned.");
voidremoveNulls(ArrayList list)
remove Nulls 
int pos = 0;
for (int i = 0; i < list.size(); i++) {
    E current = list.get(i);
    if (current != null) {
        if (i != pos) {
            list.set(pos, current);
        pos++;
...
ArrayListremoveRepeatedElems(ArrayList list)
Removes any repeated elements from the input ArrayList; returns a new ArrayList containing all unique elements from the input list. 
ArrayList newList = new ArrayList();
iLoop: for (int i = 0; i < list.size(); i++) {
    String str = (String) (list.get(i));
    for (int j = 0; j < newList.size(); j++) {
        if (str.equals((String) (newList.get(j)))) {
            continue iLoop;
    newList.add(str);
return newList;