JRuby Base 10.0.0.0 · org.jruby.java.util.SystemPropertiesMap

Access	Constructor and Description
public	SystemPropertiesMap()

Method Summary

Modifier and Type	Method and Description
public void	clear() Implements java.util.Map.clear. Removes all of the mappings from this map (optional operation).
public boolean	containsKey(Object key whose presence in this map is to be tested o) Implements java.util.Map.containsKey. Returns `true` if this map contains a mapping for the specified key.
public boolean	containsValue(Object value whose presence in this map is to be tested o) Implements java.util.Map.containsValue. Returns `true` if this map maps one or more keys to the specified value.
public Set<Map.Entry<Object, Object>>	entrySet() Implements java.util.Map.entrySet. Returns a `Set` view of the mappings contained in this map.
public Object	get(Object the key whose associated value is to be returned o) Implements java.util.Map.get. Returns the value to which the specified key is mapped, or `null` if this map contains no mapping for the key.
public boolean	isEmpty() Implements java.util.Map.isEmpty. Returns `true` if this map contains no key-value mappings.
public Set<Object>	keySet() Implements java.util.Map.keySet. Returns a `Set` view of the keys contained in this map.
public Object	put(Object key with which the specified value is to be associated s, Object value to be associated with the specified key s1) Implements java.util.Map.put. Associates the specified value with the specified key in this map (optional operation).
public void	putAll(Map<K, V> mappings to be stored in this map map) Implements java.util.Map.putAll. Copies all of the mappings from the specified map to this map (optional operation).
public Object	remove(Object key whose mapping is to be removed from the map o) Implements java.util.Map.remove. Removes the mapping for a key from this map if it is present (optional operation).
public int	size() Implements java.util.Map.size. Returns the number of key-value mappings in this map.
protected String	stringFromObject(Object o)
public Collection<Object>	values() Implements java.util.Map.values. Returns a `Collection` view of the values contained in this map.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

SystemPropertiesMap	back to summary
public SystemPropertiesMap()

Method Detail

clear	back to summary
public void clear() Implements java.util.Map.clear. Doc from java.util.Map.clear. Removes all of the mappings from this map (optional operation). The map will be empty after this call returns.

clear

back to summary

public void clear()

Implements java.util.Map.clear.

Doc from java.util.Map.clear.

Removes all of the mappings from this map (optional operation). The map will be empty after this call returns.

containsKey back to summary

containsKey	back to summary
public boolean containsKey(Object o) Implements java.util.Map.containsKey. Doc from java.util.Map.containsKey. Returns `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 `Objects.equals(key, k)`. (There can be at most one such mapping.) Parameters o:Object key whose presence in this map is to be tested Returns:boolean `true` if this map contains a mapping for the specified key

public boolean containsKey(Object o)

Implements java.util.Map.containsKey.

Doc from java.util.Map.containsKey.

Returns 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 Objects.equals(key, k). (There can be at most one such mapping.)

Parameters

o:Object: key whose presence in this map is to be tested

Returns:boolean

true if this map contains a mapping for the specified key

containsValue back to summary

containsValue	back to summary
public boolean containsValue(Object o) Implements java.util.Map.containsValue. Doc from java.util.Map.containsValue. Returns `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. Parameters o:Object value whose presence in this map is to be tested Returns:boolean `true` if this map maps one or more keys to the specified value

public boolean containsValue(Object o)

Implements java.util.Map.containsValue.

Doc from java.util.Map.containsValue.

Returns 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.

Parameters

o:Object: value whose presence in this map is to be tested

Returns:boolean

true if this map maps one or more keys to the specified value

entrySet back to summary

entrySet	back to summary
public Set<Map.Entry<Object, Object>> entrySet() Implements java.util.Map.entrySet. Doc from java.util.Map.entrySet. Returns a `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. Returns:Set<Map.Entry<Object, Object>> a set view of the mappings contained in this map

public Set<Map.Entry<Object, Object>> entrySet()

Implements java.util.Map.entrySet.

Doc from java.util.Map.entrySet.

Returns a 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.

Returns:Set<Map.Entry<Object, Object>>: a set view of the mappings contained in this map

get back to summary

get	back to summary
public Object get(Object o) Implements java.util.Map.get. Doc from java.util.Map.get. Returns the value to which the specified key is mapped, or `null` if this map contains no mapping for the key. More formally, if this map contains a mapping from a key `k` to a value `v` such that `Objects.equals(key, k)`, then this method returns `v`; otherwise it returns `null`. (There can be at most one such mapping.) If this map permits null values, then 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. Parameters o:Object the key whose associated value is to be returned Returns:Object the value to which the specified key is mapped, or `null` if this map contains no mapping for the key

public Object get(Object o)

Implements java.util.Map.get.

Doc from java.util.Map.get.

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

More formally, if this map contains a mapping from a key k to a value v such that Objects.equals(key, k), then this method returns v; otherwise it returns null. (There can be at most one such mapping.)

If this map permits null values, then 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.

Parameters

o:Object: the key whose associated value is to be returned

Returns:Object

the value to which the specified key is mapped, or null if this map contains no mapping for the key

isEmpty back to summary

isEmpty	back to summary
public boolean isEmpty() Implements java.util.Map.isEmpty. Doc from java.util.Map.isEmpty. Returns `true` if this map contains no key-value mappings. Returns:boolean `true` if this map contains no key-value mappings

public boolean isEmpty()

Implements java.util.Map.isEmpty.

Doc from java.util.Map.isEmpty.

Returns true if this map contains no key-value mappings.

Returns:boolean: true if this map contains no key-value mappings

keySet back to summary

keySet	back to summary
public Set<Object> keySet() Implements java.util.Map.keySet. Doc from java.util.Map.keySet. Returns a `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. Returns:Set<Object> a set view of the keys contained in this map

public Set<Object> keySet()

Implements java.util.Map.keySet.

Doc from java.util.Map.keySet.

Returns a 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.

Returns:Set<Object>: a set view of the keys contained in this map

put back to summary

put	back to summary
public Object put(Object s, Object s1) Implements java.util.Map.put. Doc from java.util.Map.put. Associates the specified value with the specified key in this map (optional operation). If the map previously contained a mapping for the key, the old value is replaced by the specified value. (A map `m` is said to contain a mapping for a key `k` if and only if `m.containsKey(k)` would return `true`.) Parameters s:Object key with which the specified value is to be associated s1:Object value to be associated with the specified key Returns:Object the previous value associated with `key`, or `null` if there was no mapping for `key`. (A `null` return can also indicate that the map previously associated `null` with `key`, if the implementation supports `null` values.)

public Object put(Object s, Object s1)

Implements java.util.Map.put.

Doc from java.util.Map.put.

Associates the specified value with the specified key in this map (optional operation). If the map previously contained a mapping for the key, the old value is replaced by the specified value. (A map m is said to contain a mapping for a key k if and only if m.containsKey(k) would return true.)

Parameters

s:Object: key with which the specified value is to be associated
s1:Object: value to be associated with the specified key

Returns:Object

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key, if the implementation supports null values.)

putAll back to summary

putAll	back to summary
public void putAll(Map<K, V> map) Implements java.util.Map.putAll. Doc from java.util.Map.putAll. Copies all of the mappings from the specified map to this map (optional operation). The effect of this call is equivalent to that of calling `put(k, v)` on this map once for each mapping from key `k` to value `v` in the specified map. The behavior of this operation is undefined if the specified map is modified while the operation is in progress. If the specified map has a defined encounter order, processing of its mappings generally occurs in that order. Parameters map:Map<K, V> mappings to be stored in this map

public void putAll(Map<K, V> map)

Implements java.util.Map.putAll.

Doc from java.util.Map.putAll.

Copies all of the mappings from the specified map to this map (optional operation). The effect of this call is equivalent to that of calling put(k, v) on this map once for each mapping from key k to value v in the specified map. The behavior of this operation is undefined if the specified map is modified while the operation is in progress. If the specified map has a defined encounter order, processing of its mappings generally occurs in that order.

Parameters

map:Map<K, V>: mappings to be stored in this map

remove back to summary

remove	back to summary
public Object remove(Object o) Implements java.util.Map.remove. Doc from java.util.Map.remove. Removes the mapping for a key from this map if it is present (optional operation). More formally, if this map contains a mapping from key `k` to value `v` such that `Objects.equals(key, k)`, that mapping is removed. (The map can contain at most one such mapping.) Returns the value to which this map previously associated the key, or `null` if the map contained no mapping for the key. If this map permits null values, then a return value of `null` does not necessarily indicate that the map contained no mapping for the key; it's also possible that the map explicitly mapped the key to `null`. The map will not contain a mapping for the specified key once the call returns. Parameters o:Object key whose mapping is to be removed from the map Returns:Object the previous value associated with `key`, or `null` if there was no mapping for `key`.

public Object remove(Object o)

Implements java.util.Map.remove.

Doc from java.util.Map.remove.

Removes the mapping for a key from this map if it is present (optional operation). More formally, if this map contains a mapping from key k to value v such that Objects.equals(key, k), that mapping is removed. (The map can contain at most one such mapping.)

Returns the value to which this map previously associated the key, or null if the map contained no mapping for the key.

If this map permits null values, then a return value of null does not necessarily indicate that the map contained no mapping for the key; it's also possible that the map explicitly mapped the key to null.

The map will not contain a mapping for the specified key once the call returns.

Parameters

o:Object: key whose mapping is to be removed from the map

Returns:Object

the previous value associated with key, or null if there was no mapping for key.

size back to summary

size	back to summary
public int size() Implements java.util.Map.size. Doc from java.util.Map.size. Returns the number of key-value mappings in this map. If the map contains more than `Integer.MAX_VALUE` elements, returns `Integer.MAX_VALUE`. Returns:int the number of key-value mappings in this map

public int size()

Implements java.util.Map.size.

Doc from java.util.Map.size.

Returns the number of key-value mappings in this map. If the map contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Returns:int: the number of key-value mappings in this map

stringFromObject	back to summary
protected String stringFromObject(Object o)

values back to summary

values	back to summary
public Collection<Object> values() Implements java.util.Map.values. Doc from java.util.Map.values. Returns a `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. Returns:Collection<Object> a collection view of the values contained in this map

public Collection<Object> values()

Implements java.util.Map.values.

Doc from java.util.Map.values.

Returns a 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.

Returns:Collection<Object>: a collection view of the values contained in this map

public Class SystemPropertiesMap

Constructor Summary

Method Summary

Constructor Detail

Method Detail