Java Utililty Methods Map Create

List of utility methods to do Map Create

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Map Create

Description

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

Method

Map<K, V> map = new HashMap<K, V>();
map.put(key, value);
return map;

Map buildMap(K key1, V value1)
Build Map with 1 pair.

Map<K, V> map = new HashMap<K, V>(1);
map.put(key1, value1);
return map;

void buildMap(List a, Map coeffs)
build Map

for (T t : a) {
 Integer coeff = coeffs.get(t);
 if (coeff == null) {
 coeffs.put(t, 1);
 } else {
 coeffs.put(t, coeff + 1);

Map buildMap(Object key, Object value)
build Map

return buildMap(key, value, null, null, null, null, null, null, null, null, null, null);

Map buildMap(Object... data)
Builds a map out of parameters

HashMap<String, Object> result = new HashMap<String, Object>();
if (data.length % 2 != 0)
 throw new IllegalArgumentException("Odd number of arguments");
String key = null;
Integer step = -1;
for (Object value : data) {
 step++;
 switch (step % 2) {
...

Map buildMap(String... keysAndValues)
build Map

Map<String, String> map = new HashMap<String, String>();
for (int i = 0; i < keysAndValues.length;) {
 map.put(keysAndValues[i], keysAndValues[i + 1]);
 i += 2;
return map;

Map buildMap(String... keyValuePairs)
Builds a map of key/value pairs.

if (keyValuePairs.length % 2 != 0)
 throw new IllegalArgumentException("keyValuePairs array not dividable by 2 (key + value)");
Map<String, String> map = new HashMap<String, String>();
for (int i = 0; i < keyValuePairs.length; i += 2) {
 map.put(keyValuePairs[i], keyValuePairs[i + 1]);
return map;

Map createMap()
create Map

return createMap(Collections.EMPTY_MAP);

Map createMap()
create Map

Map<String, String[]> result = new HashMap<String, String[]>();
result.put("echoResponse", new String[] {});
return Collections.unmodifiableMap(result);

Map createMap()
create Map

return createMap(INITIAL_CAPACITY);