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smallest individual unit in a program.

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C - Constants and Literals. Constants refer to fixed values that the program may not alter during its execution. These fixed values are also called literals. Constants can be of any of the basic data types like an integer constant, a floating constant, a character constant, or a string literal.

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C - Constants and Literals. Constants refer to fixed values that the program may not alter during its execution. These fixed values are also called literals. Constants can be of any of the basic data types like an integer constant, a floating constant, a character constant, or a string literal.

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Example : character constant - 'a'
or '@' or '5'
integer constant - 56, 897
String literal - "jayesh"
Floating literal - 3.24 f, 4.0d

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List of in built word commands already known to JAVA compiler. Cannot be used as identifiers.

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List of in built word commands already known to JAVA compiler. Cannot be used as identifiers.

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Name given by the programmer to different parts of a program.

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Name given by the programmer to different parts of a program.

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It cannot contain spaces, period
(.) or any other special symbol except for _ and $ and they cannot be keywords.

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Symbols used to differentiate between different parts of a program.

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Symbols used to differentiate between different parts of a program.

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It is an integrated development environment of JAVA where a program is created, compiled, executed and checked for errors.

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It is an integrated development environment of JAVA where a program is created, compiled, executed and checked for errors.

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System.out.println() - Prints the arguments from a new line.                                              System.out.print() - Prints the arguments from the same line.    

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System.out.println() - Prints the arguments from a new line.                                              System.out.print() - Prints the arguments from the same line.    

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BLUE J IS A IDE FOR JAVA  IT WAS DEVELOPED BY  MONASH UNIVERSITY PRIMARLY FOR EDUCATION PURPOSE

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BLUE J IS A IDE FOR JAVA  IT WAS DEVELOPED BY  MONASH UNIVERSITY PRIMARLY FOR EDUCATION PURPOSE

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special symbols that should not be used while naming an identifier.

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special symbols that should not be used while naming an identifier.

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Varun @#

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Datatype is a keyword that defines the type of data that is being stored in a variable.

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Datatype is a keyword that defines the type of data that is being stored in a variable.

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Example : int , byte or long (for numbers without decimals)
float or double(numbers with decimals)
char( single characters written within single quotes - 'A', '#', '9'

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Variable is a named memory location that stores a value that can change during the execution of a program.

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Variable is a named memory location that stores a value that can change during the execution of a program.

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Example : sum, name, age, salary, gender, x,y,z etc
Declaration means defining the name and datatype of a variable before its use in a program.
Example : int sum;
float average;
char gender;

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It means storing a value in a variable at the time of declaring it or before its use in a program. Example                        int age=25;  char grade='A'                    double pie=3.14;

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It means storing a value in a variable at the time of declaring it or before its use in a program. Example                        int age=25;  char grade='A'                    double pie=3.14;

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String name="Aman Sharma"

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int a,b,c;
float x,y;
We can even initialize them together
int a=3,b=4;
float x=2,y=4,z=0;
Use comma instead of semicolons between the variables while initializing multiple variables in the same line.

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Simple BlueJ has a deliberately smaller and simpler interface than professional environments like NetBeans or Eclipse. ...

Designed for teaching BlueJ is deliberately designed with good pedagogy in mind.

BlueJ is an integrated development environment (IDE) for the Java programming language, developed mainly for educational purposes, but also suitable for small-scale software development.
----------- SANSKAR SAGAR SHUKLA

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------ SANSKAR SAGAR SHUKLA

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1. $age
2. AVerage sum
3. %age
4. basic salary
5. class

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5. NOT VALID
1. IS VALID
OTHER NOT
2. NOT VALID
3.NOT VALID
4. NOT VALID

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2.INVALID
3.INVALID
4. INVALID
5.INVALID  PRAKHAR

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Palak Yadav  $AGE IS VALID

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1.valid

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--sanskar sagar

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Only first one is valid.

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2.invalid

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Nidhi

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B$age is valid

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store / assign = initialize                enter / accept = input

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store / assign = initialize                enter / accept = input

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Blue J is an IDE for JAVA . It is Windows-based platform which was developed by Monash University primarily for educational purposes.

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Java keywords are also known as reserved words. Keywords are particular words which acts as a key to a code. These are predefined words by Java so it cannot be used as a variable or object name.
------- Sanskar Sagar Shukla

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Alisha Siddiqui

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Alisha Siddiqui

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Alisha Siddiqui

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Program

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Resultr

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JAVA program

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JAVA PROGRAM

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Java Program