Introduction
Vector/Enumeration
Hashtable,HashMap
   Properties
Collections
Iterator/ArrayList
Generics
Preferences API
  Demo 1
Concurrency Utils
Enumerated Type
Arrays Class
String Tools
  String
  StringBuffer
  StringBuilder
  StringTokenizer
  String.split()
Calendar,Date,Time
  Demo 2
  Demo 3
Other Utilities
Exercises

Other utility classes in the java.util package include:

• java.util.Timer, java.util.TimerTask - this class allows threads to schedule tasks for future execution via a background thread. The tasks asks can be set up to run once , or repeatedly run at regular intervals. We discussed the Timer class in Chapter 8: Tech: Timers .
  
  
• java.util.random class provides for random number generation. It was discussed Chapter 4: Tech: Random Numbers
  
  
• java.util.bitset - provides a vector of bits that grows as needed. A large set of methods allow for access and manipulation of the bits. We discuss bit handling and bitset in Chapter 10: Tech: Bits.
  
  
• Internationalization tools include:
  • java.lang.ResourceBundle - holds locale specific information such as alternative language strings for buttons, menus, and other GUI text.
  • java.util.Locale - specifies a particular geographical, political, or cultural region.
  • java.util.Currency - provides symbols for strings representing currency values for the particular locale.

Other java.util sub-packages include:

• java.util.jar - package or tools for reading and writing the JAR (Java ARchive) file format, which is based on the Zip compression system.
  
  
• java.util.zip package provides various classes for packing and unpacking files with either the Zip or Gzip compression systems.
  
  
• java.util.regex - package with classes for matching character sequences against patterns specified by regular expressions. (See brief mention in String.split() method discussion.)
  
  
• java.util.logging - provides for systematically monitoring of a program for debugging and performance measures. Added in version 1.4. Logger Overview - Sun

Latest update: Nov.19, 2004

              Tech
ArbitaryPrecision
   BigInteger
   BigDecimal
Bit Handling
Exercises

           Physics
Data Gen&Analysis
  Demo 1
  Demo 2
Exercises