Reserved Words In JAVA (total 53 Reserve Words)

RESERVED WORDS:

In java the words which are having fixed functionalities or fixed Values are called as reserve words.

Total Number of reserve words =53.

Category of Reserve Words:

1.Keywords---> The words which are having fixed Functionalities.

2. Literals (Constant)---->The words which are having fixed Values .(3)---- i) true ii) false iii) null.

NOTE: all the reserved words (Keywords and Literals) are in small letters.

Keywords:

(i) Datatype related :- byte ,short,int ,long,float,double,char,boolean.

(ii) Flow Control Related Keywords:- if ,else ,switch,case ,default,continue,break,for,while,do while.

(iii) Method Related Keywords:- void ,return.

(iv)Unused keywords:goto ,const.

(v)New Keywords:assert,enum.

(vi)exception handling Keywords:try,catch,finally,throws,throw.

(vii)Class Related keywords :class,extends,interface,implements,pacakage,import.

(viii) Object Related Keywords: this,new,super,instanceof.

(ix) Modifier: public,private,protected,final,static,abstract,synchronised,transient,native,volatile,strictfp.

The total number of modifier available in Java 11, if we are considering default it will be 12.

(Q) HOW MANY IDENTIFIERS ARE AVAILABLE IN THIS PROGRAM:

class Ltbp

{

public static void main (String [] args)

{

System.out.println(“Hi”);

}

}

Answer : Ltbp,main,args,String,System,out,println. Total 7 identifier.

NOTES

Out ---> it is predefined Object Reference. (in other words, it is variable Name).

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Q.2

class Ltbp

{

public static void main (String [] args)

{

int a =10;

}

}

Answer : Ltbp,main,String,args,a. (Total 5 )