com.github.hypfvieh.collections

Class LinkedProperties

java.lang.Object

java.util.Dictionary<K,V>

java.util.Hashtable<Object,Object>

java.util.Properties

com.github.hypfvieh.collections.LinkedProperties

All Implemented Interfaces:

Serializable, Cloneable, Map<Object,Object>

public class LinkedProperties
extends Properties

Subclass of Properties that returns keys in insertion order by keeping an internal insertion order set of keys updated on each write operation (put, putAll, clear, remove). DOES NOT CONTROL the usage of Hashtable.entrySet() which allows write operations as well.

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.Properties

defaults

Constructor Summary

Constructors

Constructor and Description
LinkedProperties()
LinkedProperties(InputStream _inputStream) Constructor that reads a property list (key and element pairs) from the input byte stream.
LinkedProperties(Properties _defaults)

Method Summary

Modifier and Type	Method and Description
void	clear()
Enumeration	keys() Overrides keys() in order to return an insertion order enumeration.
Object	put(Object _key, Object _value)
Object	remove(Object _key)

Methods inherited from class java.util.Properties

getProperty, getProperty, list, list, load, load, loadFromXML, propertyNames, save, setProperty, store, store, storeToXML, storeToXML, stringPropertyNames

Methods inherited from class java.util.Hashtable

clone, compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, putAll, putIfAbsent, rehash, remove, replace, replace, replaceAll, size, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LinkedProperties

public LinkedProperties()

LinkedProperties

public LinkedProperties(Properties _defaults)

LinkedProperties

public LinkedProperties(InputStream _inputStream)
                 throws IOException

Constructor that reads a property list (key and element pairs) from the input byte stream.

Parameters:

_inputStream - the input stream

Throws:

IOException - if an error occurred when reading from the input stream

See Also:

Properties.load(InputStream)

Method Detail

put

public final Object put(Object _key,
                        Object _value)

Specified by:

put in interface Map<Object,Object>

Overrides:

put in class Hashtable<Object,Object>

keys

public final Enumeration keys()

Overrides keys() in order to return an insertion order enumeration. As this method is called by the various store methods in Properties, output to file etc. will be sorted accordingly.

Overrides:

keys in class Hashtable<Object,Object>

remove

public final Object remove(Object _key)

Specified by:

remove in interface Map<Object,Object>

Overrides:

remove in class Hashtable<Object,Object>

clear

public final void clear()

Specified by:

clear in interface Map<Object,Object>

Overrides:

clear in class Hashtable<Object,Object>