Java Keywords

Keywords are the reserved words and these are essential part of a language Identifiers. Each and Every keywords have special meaning and purpose. Java language has reserved 50 words as keywords. Since keywords have specific meaning in java, we cannot use them as names for variables. The following are the java reserved words.

1. abstract          
2. assert
3. boolean
4. break
5. byte
6. case
7. catch
8. char
9. class
10. const
11. continue 
12. default
13. do
14. double
15. else
16. enum
17. extends
18. final
19. finally
20. float
21. for
22. goto
23. if
24. implements
25. import
26. instanceof
27. int
28. interface
29. long
30. native
31. new
32. package
33. private
34. protected 
35. public
36. return
37. short
38. static
39. strictf
40. super
41. switch
42. synchronization 
43. this
44. throw
45. throws
46. transient  
47. try
48. void
49. volatile 
50. while

Note:

1. The keywords const and goto are reserved but not used
2.In addition to the above 50 keywords java also reserved true, false, null, you cannot use these as identifier names.
3. All keywords are in lower case letters.

The following table show all the keywords with category