Java Utililty Methods List Equal

List of utility methods to do List Equal

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Description

The list of methods to do List Equal are organized into topic(s).

Method

booleanisEqual(List from, List to)
is Equal 
return (getCommonElements(from, to).size() == from.size()) && (from.size() == to.size());
booleanisEqualAsMultiset(List left, List right)
Checks whether two given lists that are interpreted as multi-sets contain the same elements. 
for (Object e : left) {
    if (right.contains(e)) {
        right.remove(e);
    } else {
        return false;
return right.isEmpty();
...
booleanisEqualIgnoringOrder(List left, List right)
is Equal Ignoring Order 
if (left != null && right != null) {
    ArrayList sortedLeft = new ArrayList(left);
    ArrayList sortedRight = new ArrayList(right);
    Collections.sort(sortedLeft);
    Collections.sort(sortedRight);
    return sortedLeft.toString().equals(sortedRight.toString());
} else {
    return left == right;
...
booleanisEqualList(List list1, List list2)
check equal without caring about the order. 
if (list1 == list2) {
    return true;
if (list1 == null || list2 == null || list1.size() != list2.size()) {
    return false;
for (T obj1 : list1) {
    if (!list2.contains(obj1)) {
...
booleanisEquals(List l1, List l2)
is Equals 
if (l1 == l2)
    return true;
if (l1 == null)
    return l2 == null;
if (l2 == null)
    return false;
if (l1.size() != l2.size())
    return false;
...
booleanisEquals(List l1, List l2)
is Equals 
if (l1 == null && l2 == null) {
    return true;
if (l1 == null || l2 == null) {
    return false;
if (l1.size() != l2.size()) {
    return false;
...