Java Utililty Methods HashMap Copy

List of utility methods to do HashMap Copy

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HashMap Copy

Description

The list of methods to do HashMap Copy are organized into topic(s).

Method

HashMap<Byte, String> newHashMap = new HashMap<Byte, String>();
for (Byte b : oldHashMap.keySet()) {
 String str = oldHashMap.get(b);
 newHashMap.put(b, str);
return newHashMap;

void copyDirective(HashMap directives, StringBuilder sb, String directive)
Copy the directive to the StringBuilder if not null.

String directiveValue = directives.get(directive);
if (directiveValue != null) {
 sb.append(directive).append(" = \"").append(directiveValue).append("\", ");

HashMap copyHashMap(final HashMap map)
Returns copied HashMap.

return new HashMap<K, V>(map);

void copyHashWords(HashMap> ohwords, HashMap> nhwords, int start, int end, int nstart)
copy Hash Words

int ind_start = 0;
@SuppressWarnings("unused")
int ind_end = 1;
@SuppressWarnings("unused")
int ind_from = 2;
int ind_in = 3;
int k = nstart;
for (int i = start; i <= end; ++k, ++i) {
...

void copyItem(HashMap to, HashMap from, String key)
copy item from one map to another map

copyItem(to, from, key, key, false);

HashMap copyMap(HashMap map)
copy Map

HashMap<Object, Object> newmap = new HashMap<>(10);
for (Object key : map.keySet()) {
 newmap.put(key, map.get(key));
return newmap;

void copyParam(HashMap from, HashMap to, String key)
copy Param

to.put(key, from.get(key));