Java Utililty Methods Map Put

List of utility methods to do Map Put

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Description

The list of methods to do Map Put are organized into topic(s).

Method

voidputAbsent(Map dest, Map src)
put Absent 
for (Map.Entry<K, V> entry : src.entrySet()) {
    if (!dest.containsKey(entry.getKey())) {
        dest.put(entry.getKey(), entry.getValue());
voidputAll(final Map dst, final Map src)
Put all entries from the source Map into the destination Map, converting keys and values to Strings if needed 
final Iterator<Entry<K, V>> iter = src.entrySet().iterator();
while (iter.hasNext()) {
    final Entry<K, V> entry = iter.next();
    dst.put(toString(entry.getKey()), toString(entry.getValue()));
MputAll(M map, Iterable> values)
Folds all the specified values into the supplied map and returns it. 
for (Map<? extends K, ? extends V> val : values) {
    map.putAll(val);
return map;
MapputAll(Map original, Map... others)
put All 
for (Map other : others) {
    original.putAll(other);
return original;
voidputAll(Map dest, Collection src, V value)
put All 
for (K k : src) {
    dest.put(k, value);
voidputAll(Map map, Map otherMap)
Map.putall with non null check on the other map. 
if (otherMap != null) {
    map.putAll(otherMap);
MapputAll(Map map, Object... keysAndValues)
put All 
int i = 0;
while (i != keysAndValues.length) {
    map.put((K) keysAndValues[i], (V) keysAndValues[i + 1]);
    i += 2;
return map;
MapputAll(Map model, String prefix, Map subModel)
put All 
for (Map.Entry<String, R> e : subModel.entrySet()) {
    model.put(prefix + "." + e.getKey(), e.getValue());
return model;
voidputAll(Map map, String prefix, Map values)
put All 
for (Map.Entry<String, String> e : values.entrySet()) {
    map.put(prefix + e.getKey(), e.getValue());
voidputAllIfAbsent(final Map target, final Map source)
Puts entries from the source map into the target map, but without overriding any existing entry in target map, i.e. 
source.entrySet().stream().filter(entry -> !target.containsKey(entry.getKey()))
        .forEach(entry -> target.put(entry.getKey(), entry.getValue()));