Java Utililty Methods Map from Array

List of utility methods to do Map from Array

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Description

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

Method

Mapmap(Object... elements)
Create a map from any number of paris of arguments. 
if (elements.length % 2 == 1) {
    throw new IllegalArgumentException("map() requires an even number of arguments");
Map m = map();
for (int ix = 0; ix < elements.length;) {
    m.put(elements[ix++], elements[ix++]);
return m;
...
Mapmap(Object... keyvals)
map 
if (keyvals == null) {
    return new HashMap<>();
} else if (keyvals.length % 2 != 0) {
    throw new IllegalArgumentException("Map must have an even number of elements");
} else {
    Map<K, V> m = new HashMap<>(keyvals.length / 2);
    for (int i = 0; i < keyvals.length; i += 2) {
        m.put((K) keyvals[i], (V) keyvals[i + 1]);
...
Mapmap(Object... mapValues)
map 
Map map = new HashMap();
for (int i = 0; i < mapValues.length; i = i + 2) {
    map.put(mapValues[i], mapValues[i + 1]);
return map;
Mapmap(Object... objects)
map 
if (objects.length % 2 != 0) {
    throw new RuntimeException("bad argument list " + objects.length + ": " + Arrays.toString(objects));
HashMap<String, Object> m = new HashMap<>();
for (int i = 0; i < objects.length; i += 2) {
    m.put((String) objects[i], objects[i + 1]);
return m;
...
Mapmap(Object... objects)
map 
HashMap map = new HashMap();
Object key = null;
for (final Object object : objects) {
    if (key == null) {
        key = object;
    } else {
        map.put(key, object);
        key = null;
...
Mapmap(Object... objects)
A short-hand method for creating a Map of key/value pairs where keys are String s and values are Object s. 
return genericMap(objects);
Mapmap(Object... objs)
map 
return toMap(objs);
Mapmap(Object... objs)
map 
if (objs.length % 2 != 0) {
    throw new IllegalArgumentException("Input map should contain even count of arguments.");
Map<String, Object> map = new LinkedHashMap<>();
for (int i = 0; i < objs.length; i += 2) {
    map.put((String) objs[i], objs[i + 1]);
return map;
...
Mapmap(Object... oo)
map 
Map result = new HashMap();
for (int i = 0; i < oo.length; i += 2)
    result.put(oo[i], oo[i + 1]);
return result;
Mapmap(Object... params)
map 
HashMap map = new HashMap();
for (int i = 0; i < params.length; i += 2) {
    map.put(params[i], params[i + 1]);
return map;