Complete List Of Java Keywords

The following is a complete list of keywords defined in the Java programming language. None of the following words can be as identifiers in the program that is written in Java Language. Remember, java may introduce more keywords in the language as required when they come up with new versions of Java.

Notations:
* Currently Not Used
** Added In Java Version 1.2
*** Added In Java Version 1.4
**** Added In Java Version 5.0

For details of each of this keyword, visit the link below in Wikipedia.

http://en.wikipedia.org/wiki/List_of_Java_keywords

List of 25 Plus Devices That Run On Java

Java don’t just run on your laptop and desktops. They run on a vast array of devices – more than you could possibly imagine. Today more than 3 billion devices run Java. Here are some of the common devices that run Java.

  1. Airplane Systems
  2. ATMs
  3. BlackBerry Smartphones
  4. Blu-ray Disc Players
  5. Cable Boxes
  6. Cell Phones
  7. Computers
  8. Credit Cards
  9. CT Scanners
  10. Government IDs
  11. Home Security Systems
  12. Kindle E-Readers
  13. Livescribe Smartpens
  14. Lottery Systems
  15. MRIs
  16. On-Board Computer Systems
  17. Parking Meters
  18. PlayStation Consoles
  19. Printers
  20. Public Transportation Passes
  21. Robots
  22. Routers
  23. Smart Grid Meters
  24. TVs
  25. Vehicle Diagnostic Systems
  26. VoIP Phones

What is the difference between java and javaw?

Everyday is a new learning opportunity. I have been a programmer for more than 5 years now, but I realized sometimes people tend to ignore smaller nice features – which you later repent you should have learned years ago. Here is what I learned today about java/javaw.

The javaw command is identical to java, except that with javaw there is no associated console window. Use javaw when you don’t want a command prompt window to appear. The javaw launcher will, however, display a dialog box with error information if a launch fails for some reason.

Just giving you  a background on why it was useful to me: I was working on a shared machine with my co-workers and I used to leave one of my tools running in the console. This tool was supposed to stay alive all the time to serve its purpose of polling the logged users – but sometimes it used to get killed by some other users (and sometimes myself too) in ignorance. Then when I learned using ‘javaw’ I didnt have to care even if I myself or my co-workers killed the console, the program ran on the background anyways.

You could run your programs as a service anyways – but I am not going to advocate about those ideas in this post today.