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

voidputLowerNotNull(Map m, String k, V v)
Put a lowercase version of k in the map if it is non-null 
if (k != null)
    m.put(k.toLowerCase(), v);
voidputMap(Map map, Object... args)
Add entries to a Map. 
int pos = 0;
Object key = null;
for (Object arg : args) {
    if ((pos & 1) != 0)
        map.put(key, arg);
    else
        key = arg;
    ++pos;
...
voidputMap(Map target, Map map)
put Map 
for (Entry<K, V> entry : map.entrySet()) {
    target.put(entry.getKey().toString(), entry.getValue().toString());
booleanputMapBoolean(Map params, String key)
put Map Boolean 
return params.containsKey(key) && !params.get(key).equals("");
MapputMapBooleanList(Map params, String... keys)
put Map Boolean List 
Map<String, Object> resultMap = new HashMap<>();
Arrays.stream(keys).filter(key -> params.containsKey(key) && !params.get(key).equals(""))
        .forEach(key -> resultMap.put(change(key), params.get(key)));
return resultMap;
voidputMapByPair(String pair, Map m)
put Map By Pair 
if (null == pair || "".equals(pair)) {
    return;
int indexOf = pair.indexOf("=");
if (-1 != indexOf) {
    String k = pair.substring(0, indexOf);
    String v = pair.substring(indexOf + 1, pair.length());
    if (null != k && !"".equals(k)) {
...
voidputMapEntry(Map map, String name, String value)
Put name and value pair in map. 
String[] newValues = null;
String[] oldValues = map.get(name);
if (oldValues == null) {
    newValues = new String[1];
    newValues[0] = value;
} else {
    newValues = new String[oldValues.length + 1];
    System.arraycopy(oldValues, 0, newValues, 0, oldValues.length);
...
booleanputMapNotNullKey(Map map, K key, V value)
add key-value pair to map, key need not null 
if (map == null || key == null) {
    return false;
map.put(key, value);
return true;
voidputMapValue(String path, Object value, Map map)
put Map Value 
if (path == null || path.trim().isEmpty()) {
    return;
String[] split = path.split("\\.");
Map<String, Object> targetMap = map;
for (int i = 0; i < split.length - 1; i++) {
    String key = split[i];
    Object intermediateMap = (Map<String, Object>) targetMap.get(key);
...
MapputModifiedAttribute(Map aMap, String name, Object value)
put Modified Attribute 
if (aMap == null) {
    aMap = new HashMap();
aMap.put(name, value);
return aMap;