java programming tutorials in hindi: keywords in java programming - boolean,byte,if, else,interface,abstract class,public,private,protected hindi me jane

what is keyword in java programming language

keywords वे tokens होते है जिनका java program में एक special meaning होता है और ये programmer के द्वारा variable और method के नाम के लिए उपयोग नही किये जा सकते है .

इनकी संख्या java में fix होती है

  what is keywords in c/c++ hindi में जाने

java 1.1 – 50

java 1.2 – 51

java 1.4 -52

java 1.5 -54

keywords used in java 1.1

boolean :– declare a Boolean variable or return type

Byte :- declare a byte variable or return type

Char :-declare a character variable or return type

Double :- declare a double variable or return type

Float :- declare a floating point variable or return type

Short :- declare a short integer variable or return type

Void :-declare that a method does not return a value

Int :- declares an integer variable or return type

Long :- declares a long integer variable or return type

While :- begins a while loop

For :- begins a for loop

Do :- begins a do while loop

Switch :- tests for the truth of various possible cases

Break :- prematurely exits a loop

Continue :- prematurely retunt to the begging of a loop

Case :- one case in a switch statement

Default :- default action for a switch statement

If :-execute statement if the condition is true

Else :-single the code to be executed if an if statement is not true

Try:- attempt an operation that may throw an exception

Catch :- handle an exception

Class :- singles the beginning of a class definition

Finally :- declares a block of code guaranteed to be executed

Abstract :-declares that a class or method is abstract

Extends :-specifies the class which this class is a subclass of

Final :-declare that a class may not be subclassed or that a field or method may not be overridden

Implements :- declare that this class implements the given interface

Import :- permit access to a class or group of classes in a package

Instanceof :- tests whether an object is an instanceof a class

Interface :- signals the beginning of an interface define

Native :- declare that a method is implemented in native code

New :- allocates a new object

Package :- defines the package in which this source code file belongs

Private :- declares a method or member variable to be private

Protected: -declares a class , method or member variable to be protected

Public: :- declares a class , method or member variable to be public

Return :- return a value from a method

Static :-declares that a field or method belongs to a class rather than an object

Super :- a reference to the parent of the current object

Synchronized :- includes that a section of code is not thread – safe

This :- a reference to the current object

Throw :- throw an exception

Throws :-declares the exception thrown by a method

Transient :- this field should not be serialized

Volatile :- warns the compiler that a variable change asynchronously.

ये सभी keyword पहले से ही defined है इनके नाम से कोई  variable या फिर किसी function का नाम नही रख सकते है

                            

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