Java Utililty Methods Collection Add

List of utility methods to do Collection Add

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Description

The list of methods to do Collection Add are organized into topic(s).

Method

voidaddConditionImpl(Collection conditions, String condition, String value)
add Condition Impl 
conditions.add(condition + " " + value);
CollectionaddDirToStringPaths(Collection ss, String dir)
add Dir To String Paths 
ArrayList<String> newss = new ArrayList<String>();
for (String s : ss) {
    try {
        s = addDirToStringPath(s, dir);
        if (s != null)
            newss.add(s);
    } catch (Exception e) {
        e.printStackTrace();
...
Listadded(Collection old, Collection nu)
added 
List<String> added = null;
for (String s : nu) {
    if (!old.contains(s)) {
        if (added == null) {
            added = new ArrayList<String>(nu.size());
        added.add(s);
return added;
Collectionadded(Collection a, Collection b)
returns the elements added in List a with respect to b 
Collection<T> aCopy = new ArrayList<T>(a);
Collection<T> bCopy = new ArrayList<T>(b);
aCopy.removeAll(bCopy);
return aCopy;
CollectionaddIf(Collection coll, T value, boolean expr)
Adds a value to the collection if the boolean expression is true. 
if (expr)
    coll.add(value);
return coll;
booleanaddIfAbsent(Collection c, T item)
add If Absent 
return !c.contains(item) && c.add(item);
voidaddIfMissing(Collection result, Iterable addition)
add If Missing 
if (addition == null) {
    return;
for (E e : addition) {
    if (!result.contains(e)) {
        result.add(e);
booleanaddIfNotContains(Collection collection, T value)
add If Not Contains 
if (collection != null && value != null && !collection.contains(value)) {
    return collection.add(value);
} else {
    return false;
voidaddIfNotEmpty(Collection c, Collection elements)
add If Not Empty 
if (null != c && null != elements && !elements.isEmpty()) {
    c.addAll(elements);
voidaddIfNotNull(Collection c, Object element)
add If Not Null 
if (element != null) {
    c.add(element);