Varia HowTo

• Unique ID
  chevron_rightUse System time to generate unique ID
  chevron_rightGet a unique identifier
  chevron_rightGet the hard disk serial number or Motherboard Serial number
  
• Algorithm
  chevron_rightSort an array 1
  chevron_rightSort an array 2
  chevron_rightDo a selection sort
  chevron_rightValidate a Social Security Number (canadian)
  chevron_rightValidate a Credit Card Number
  
• Class
  chevron_rightObtain from where a Class is loaded
  chevron_rightGet the class name with or without the package
  chevron_rightSee the generated bytecode
  
• Interesting
  chevron_rightSelf-replicating programs
  chevron_rightA curiosity
  chevron_rightCommon Bugs
  chevron_rightNumber of the beast! :-)
  
• Scripting engine (JDK1.6)
  chevron_rightUse Java scripting engine (JDK 1.6)
  chevron_rightPass or retrieve values from a scripting engine (JDK 1.6)
  
• Misc
  chevron_rightPreventing multiple instances of an application
  chevron_rightTrap JVM shutdown
  chevron_rightMinimize all programs on Windows to show the Desktop
  chevron_rightDisplay a progress indicator in the console
  

Varia HowTo

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