Java Utililty Methods List Contain

for (Object reference : references) {
    if (reference == toBeFound) {
        return true;
return false;

if (col1 == col2)
    return true;
if (col1 == null || col2 == null)
    return false;
if (col1.size() != col2.size())
    return false;
Iterator<?> it1 = col1.iterator();
Iterator<?> it2 = col2.iterator();
...

for (Iterator<String> i = list.iterator(); i.hasNext();)
    if (((String) i.next()).equals(str))
        return true;
return false;

for (String s : list) {
    if (s.startsWith(prefix))
        return true;
return false;

if (b.size() > a.size())
    return false;
outer: for (int i = 0, maxi = b.size(); i < maxi; i++) {
    for (int j = i, maxj = a.size(); j < maxj; j++) {
        if (a.get(j).equals(b.get(i))) {
            continue outer;
    return false;
return true;

return (indexOfType(list, type) != -1);

int remaining = a.size() - b.size();
for (int i = 0; i < remaining; i++)
    if (a.subList(i, i + b.size()).containsAll(b))
        return true;
return false;

boolean found = false;
Object[] a = list.toArray();
for (int i = 0; i < a.length; ++i) {
    if (a[i].equals(value))
        found = true;
return found;

Iterator itr = elements.iterator();
while (itr.hasNext()) {
    String element = (String) itr.next();
    if (element.trim().equals("")) {
        return true;
return false;
...

String res = words.stream().map(String::toUpperCase).filter(s -> s.length() < 7)
        .filter(s -> s.contains(containedTest)).findFirst().orElse(null);
return res;