public class SimpleBindings extends Object implements Bindings
HashMap or some other specified Map.| Constructor | Description |
|---|---|
SimpleBindings() |
Default constructor uses a HashMap. |
SimpleBindings |
Constructor uses an existing Map to store the values. |
| Modifier and Type | Method | Description |
|---|---|---|
void |
clear() |
Removes all of the mappings from this map (optional operation). |
boolean |
containsKey |
Returns true if this map contains a mapping for the specified key. |
boolean |
containsValue |
Returns true if this map maps one or more keys to the specified value. |
Set |
entrySet() |
Returns a Set view of the mappings contained in this map. |
Object |
get |
Returns the value to which this map maps the specified key. |
boolean |
isEmpty() |
Returns true if this map contains no key-value mappings. |
Set |
keySet() |
Returns a Set view of the keys contained in this map. |
Object |
put |
Sets the specified key/value in the underlying map field. |
void |
putAll |
putAll is implemented using Map.putAll. |
Object |
remove |
Removes the mapping for this key from this map if it is present (optional operation). |
int |
size() |
Returns the number of key-value mappings in this map. |
Collection |
values() |
Returns a Collection view of the values contained in this map. |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll
public SimpleBindings(Map<String,Object> m)
Map to store the values.m - The Map backing this SimpleBindings.NullPointerException - if m is nullpublic SimpleBindings()
HashMap.public Object put(String name, Object value)
map field.put in interface Bindings
put in interface Map<String,Object>
name - Name of valuevalue - Value to set.NullPointerException - if the name is null.IllegalArgumentException - if the name is empty.public void putAll(Map<? extends String,? extends Object> toMerge)
putAll is implemented using Map.putAll.putAll in interface Bindings
putAll in interface Map<String,Object>
toMerge - The Map of values to add.NullPointerException - if toMerge map is null or if some key in the map is null.IllegalArgumentException - if some key in the map is an empty String.public void clear()
public boolean containsKey(Object key)
true if this map contains a mapping for the specified key. More formally, returns true if and only if this map contains a mapping for a key k such that (key==null ? k==null : key.equals(k)). (There can be at most one such mapping.)containsKey in interface Bindings
containsKey in interface Map<String,Object>
key - key whose presence in this map is to be tested.true if this map contains a mapping for the specified key.NullPointerException - if key is nullClassCastException - if key is not StringIllegalArgumentException - if key is empty Stringpublic boolean containsValue(Object value)
true if this map maps one or more keys to the specified value. More formally, returns true if and only if this map contains at least one mapping to a value v such that Objects.equals(value, v). This operation will probably require time linear in the map size for most implementations of the Map interface.containsValue in interface Map<String,Object>
value - value whose presence in this map is to be testedtrue if this map maps one or more keys to the specified valuepublic Set<Map.Entry<String,Object>> entrySet()
Set view of the mappings contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation, or through the setValue operation on a map entry returned by the iterator) the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll and clear operations. It does not support the add or addAll operations.public Object get(Object key)
null if the map contains no mapping for this key. A return value of null does not necessarily indicate that the map contains no mapping for the key; it's also possible that the map explicitly maps the key to null. The containsKey operation may be used to distinguish these two cases. More formally, if this map contains a mapping from a key k to a value v such that (key==null ? k==null : key.equals(k)), then this method returns v; otherwise it returns null. (There can be at most one such mapping.)
get in interface Bindings
get in interface Map<String,Object>
key - key whose associated value is to be returned.null if the map contains no mapping for this key.NullPointerException - if key is nullClassCastException - if key is not StringIllegalArgumentException - if key is empty Stringpublic boolean isEmpty()
true if this map contains no key-value mappings.public Set<String> keySet()
Set view of the keys contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.public Object remove(Object key)
k to value v such that (key==null ? k==null : key.equals(k)), that mapping is removed. (The map can contain at most one such mapping.) Returns the value to which the map previously associated the key, or null if the map contained no mapping for this key. (A null return can also indicate that the map previously associated null with the specified key if the implementation supports null values.) The map will not contain a mapping for the specified key once the call returns.
remove in interface Bindings
remove in interface Map<String,Object>
key - key whose mapping is to be removed from the map.null if there was no mapping for key.NullPointerException - if key is nullClassCastException - if key is not StringIllegalArgumentException - if key is empty Stringpublic int size()
Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.public Collection<Object> values()
Collection view of the values contained in this map. The collection is backed by the map, so changes to the map are reflected in the collection, and vice-versa. If the map is modified while an iteration over the collection is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The collection supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Collection.remove, removeAll, retainAll and clear operations. It does not support the add or addAll operations.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.scripting/javax/script/SimpleBindings.html