10 Legacy Collections

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Legacy Collections, 
Internationalization

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Outline
1.
Hashtable
2.
Stack
3.
Dictionary
4.
Vector
5.
Property
6.
i18n
7.
ResourceBundle

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Legacy Collections
Javaning dastlabki versiyasida ob'ektlarni saqlashga imkon beruvchi bir nechta classlar va 
interfeyslar mavjud bo’lgan. JSE 1.2 da Collection framework qo'shilgandan so'ng, Collection 
frameworkni qo'llab-quvvatlash uchun bu classlar qayta ishlab chiqilgan. 
Shunday qilib, Javaning eski versiyasida to'plamlar tizimini tashkil etgan classlar va interfeyslar 
Legacy classlar deb nomlanadi. JDK5-da genericlarni qo'llab-quvvatlash uchun bu classlar qayta 
ishlab chiqilgan.
Barcha legacy classlar synchronized. 

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Legacy Collections
java.util package da quyidagi legacy classlar mavjud:
1.
HashTable
2.
Stack
3.
Dictionary
4.
Vector
5.
Properties

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HashTable
HashMap
ConcurrentHashMap

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Stack
Dequeue

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Dictionary
Map

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Vector
ArrayList

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Properties
Oracle documentation
Properties classi String toifasidagi key va value juftliklarini sqalashga mo’ljallangan
Asosan Properties classi 
.properties
va 
xml
faylidan ma'lumotlarni o’qish va yozish methodlarini 
taqdim etadi. Bundan tashqari, u tizimning xususiyatlarini olish uchun ham ishlatilishi mumkin.
website=https://en.wikipedia.org/
language=English
# A word on a line will just create a key with no value

value

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Constructors
Oracle documentation
Properties( )
Properties(Properties propDefault)

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Methods
Oracle documentation
public void load(Reader r)
public void load(InputStream is)
public void loadFromXML(InputStream in)
public String getProperty(String key)
public String getProperty(String key, String defaultValue)
public void setProperty(String key, String value)
public void list(PrintStream out
public void list(PrintWriter out))
public Enumeration propertyNames())
public Set stringPropertyNames()
public void store(Writer w, String comment)
public void store(OutputStream os, String comment)
public void storeToXML(OutputStream os, String comment)
public void storeToXML(Writer w, String comment, String encoding)

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