Java Keywords and List of all java words

Keywords in Java Or Reserved word

What is Keywords?
keywords are also Known as the Reserved words /Pre-define Keywords .In java Reserved keyword are used for some internal process or predefined action . In java Programming Language we can not used keyword as variable name or objects.If we do the same then java compiler throws an error.

List Of all Java Keywords

List of all java Keyword or Reserved Key word are given below

Total Java keywords :-( 50)

Data Types - byte ,short, int, long, float ,double ,char ,Boolean (8)

Flow-Control:- if, else, switch, case, default ,break, for ,while, do, continue (10)

method-level:- void, return (2)

Object-level:- new ,this ,super , instanceof (4)

source-file: class ,extends ,interface, implements ,package, import (6)

Exception handling:- try ,catch ,finally, throw ,throws (5)

1.5 version:- enum ,assert (2)

Modifiers:- public, private ,protected ,abstract ,final ,static strictfp ,native ,transient, volatile ,synchronized (11)

Predefined constants : True, false, null (3)

unused:- goto ,const(2)

Keywords (50) + constants (3) = Reserved Words (53)

Brief Explanation of Keywords :

1) byte : To declare a variable that can hold 8-bit data values we use byte keywords .
2) short : To declare a variable that can hold 16-bit integer we use short keyword .

3) int : To declare a variable that can hold 32-bit signed integer we use int keyword .

4) long : To declare a variable that can hold 64- bit integer we use long keyword .

5) float : To declare a variable that can hold 32-bit floating point number we use float keyword.

6) double : To Declare a variable that can hold the 64- bit floating point Number we use double keywords .

7) char : To declare a variable that can hold the unsigned 16 bit unicode character we use char keywords.
8) boolean : To declare a variable as boolean we use the boolean keywords . boolean keywords hold only TRUE and FALSE Value.

9) if : To Test the a True / false expression and branches we use if keyword.

10) else : To indicate the alternative branches in an if statement we use else keyword .

11) switch : A statement that executes code based on a test value we use switch keyword .

12) case : Case keyword in java is used to mark block of text in switch statement .

13) default : To Specifies the default block of code in a switch statement we use default keyword .

14) break : To Break the loop or switch statement we use break keyword .

15) for : To start for loop we use for keyword .

16) while : To Start a while loop we use while keyword .

17) do : To start a do while loop we use do keyword .

18) continue : To continue a the loop we use continue keyword it sends control back outside loop.

19) void

20) return

21) new

22) this

23) super

24) instanceof

25) class

26) extends

27) interface

28) implements

29) package

30) import

31) try

32) catch

33) finally

34) throw

35) throws

36) enum (1.5 version)

37) assert (1.5 version)

38) public

39) private

40) protected

41) abstract

42) final

43) static

44) strictfp

45) native

46) transient

47) volatile

48) synchronized

49)True

50)false

51)null

52)goto

53)const

Reserved words (53):- Keywords (50) + constants (3) = Reserved Words (53)

Hope !!! The above tutorial of Java keyword helpful For You ... Team
QA acharya

Tags: Java keyword , list of all java keyword , Keyword in java , Reserved keyword in java , List of all java keyword , java keyword list .