Java Utililty Methods List First Item

List of utility methods to do List First Item

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Description

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

Method

TgetFirst(List source)
get First 
return source.isEmpty() ? null : source.get(0);
StringgetFirstAsString(Map> multiValueMap, String key)
get First As String 
return getFirstAsString(multiValueMap, key, false);
ListgetFirstColumn(List> llo, String reason)
Gets the first column. 
return getNthColumn(llo, 0, reason);
StringgetFirstDuplicateValue(List values)
get First Duplicate Value 
String message = null;
int size = values.size();
for (int i = 0; i < size; i++) {
    String col1 = values.get(i);
    for (int j = i + 1; j < size; j++) {
        String col2 = values.get(j);
        if (col1.equals(col2)) {
            message = col1;
...
TgetFirstElement(List list)
get First Element 
for (int i = 0; i < list.size(); i++) {
    T obj = list.get(i);
    if (obj != null)
        return obj;
return null;
TgetFirstElement(List collection)
get First Element 
return collection.iterator().next();
TgetFirstElement(List list)
get First Element 
if (list != null && list.size() >= 1) {
    return list.get(0);
return null;
TgetFirstElement(List list)
This is a convenience method to return the first element from a list. 
if (!isEmpty(list)) {
    return list.get(0);
return null;
TgetFirstElementFromList(List list)
get First Element From List 
return list.size() > 0 ? list.get(0) : null;
TgetFirstFromList(List list)
Peaks first element from list 
T value;
if (valid(list)) {
    value = list.get(FIRST_INDEX);
} else {
    value = null;
return value;