Java Utililty Methods Map Remove

List of utility methods to do Map Remove

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Description

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

Method

voidremoveNullPair(Map map)
remove Null Pair 
List<Object> nullPairKeyList = new ArrayList<>();
for (Object key : map.keySet()) {
    if ("".equals(key) || map.get(key) == null) {
        nullPairKeyList.add(key);
for (Object nullPairKey : nullPairKeyList) {
    map.remove(nullPairKey);
...
MapremoveNullValues(final Map parameters)
Removes Entries with null as value and returns a new Map 
Map<String, String> cleanedParameters = new HashMap<>(parameters.size(), 1);
for (Map.Entry<String, String> entry : parameters.entrySet()) {
    if (entry.getValue() != null) {
        cleanedParameters.put(entry.getKey(), entry.getValue());
return cleanedParameters;
voidremoveNullValues(Map map)
Removes null values from the given map 
if (map == null)
    return;
map.values().removeAll(Collections.singleton(null));
MapremoveObject(Map map, T key)
remove Object 
if (map == null) {
    map = new HashMap<T, U>();
map.remove(key);
return map;
ObjectremoveObjectProperty(Map properties, String key, Object defaultValue)
Returns an Object property from a Map and removes it. 
Object value = defaultValue;
if (properties != null && properties.containsKey(key)) {
    value = properties.remove(key);
return value;
voidremoveOutStringsStrings(Map map, String newString)
Remove um string da tabela de espalhamento caso seja igual ao parametro 'newString' 
for (Iterator<Entry<String, String>> iterator = map.entrySet().iterator(); iterator.hasNext();) {
    Map.Entry<String, String> entry = (Map.Entry<String, String>) iterator.next();
    String key = entry.getKey();
    if (key.equals(newString)) {
        iterator.remove();
MapremoveParamsForAlipaySign(Map map)
remove Params For Alipay Sign 
map.remove("sign");
map.remove("sign_type");
return map;
MapremoveParentBeans(Map parentBeans, Map beans)
remove Parent Beans 
for (String key : parentBeans.keySet()) {
    beans.remove(key);
return beans;
MapremovePrivateColumns(Map contentValues)
removes Key 
HashMap<String, Object> result = new HashMap<String, Object>();
Object[] keySet = (contentValues.keySet().toArray());
for (int i = 0; i < keySet.length; i++) {
    String name = (String) keySet[i];
    Object value = contentValues.get(name);
    if (!"Key".equals(name)) {
        result.put(name, value);
return result;
voidremoveRownum(List> rows)
remove Rownum 
for (Map<String, Object> row : rows) {
    row.remove("ROWNUM_");