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Appendix

List of reserved keywords in Java

1. Abstract
2. boolean
3. break
4. byte
5. byValue
6. case
7. catch
8. char
9. class
10. const
11. continue
12. default
13. double
14. else
15. extend
16. false
17. final
18. finally
19. float
20. for
21. goto
22. if
23. implements
24. int
25. interface
26. long
27. native
28. new
29. null
30. package
31. private
32. protected
33. public
34. return
35. import
36. super
37. switch
38. synchronized
39. this
40. threadsafe
41. throw
42. transient
43. true
44. try
45. void
46. while
47. short 

 
Decimal, Octal and Hexadecimal Numbers

Decimal numbers (base 10) are the ordinary numbers i.e. number having digits between 0 and 9. Example of decimal numbers: 109, 2821, 39038, 9827, 7098 etc.  

Octal numbers (base 8) are the numbers having digits between 0 and 7. For example, a decimal number 109 in octal notation can be written as 155 i.e. (109)10 is same as (155)8

Hexadecimal numbers (base 16) are the numbers that can be represented by 16 different digits. These digits are 0 to 9. In addition to these 10 digits, used by hexadecimal number system, six more alphabets are required. These six alphabets are represented by A to F. Alphabet 'A' is used to represent 10, 'B' to represent 11, 'C' to represent 12 and so on.

Unicode character set belongs to Unicode Worldwide character standard, which is a character coding system designed to support the interchange, processing and display of diverse languages of modern world. Unicode standard contains 38,885 distinct coded characters derived from 25 supported scripts. These characters cover the principle written languages of Europe, the Middle East, the Americas, Asia and Pacifica.
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