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Java - Identifier and primitive datatype in java 
 

In this example you will learn what is identifier and primitive data type of a identifier. This tutorials will teach you how to use these identifier in you java programming.

 

Java - Identifier and Primitive Data Types in java

                         

In this example you will learn what is identifier and primitive data types of a identifier. This tutorials will teach you how to use these identifier in you  java programming. Identifier is is a simple variable name which is defined as the value container. The type of value stored by identifier is defined by the special java keyword is termed as primitive data type.

In the given example there are some identifiers have been used like byteident, shortident, intident, longident, charident, stringident, floatident, doubleident. And there are some primitive data types of used identifiers have been also used in the program like byte, short, int, long, float, double, char and String. 

All the data type has it's own capacity to keep the maximum value. Which have been mentioned below : 

Primitive Data Types
Keyword Description Size/Format
Integers
byte Byte-length integer 8-bit two's complement
short Short integer 16-bit two's complement
int Integer 32-bit two's complement
long Long integer 64-bit two's complement
Real numbers
float Single-precision floating point 32-bit IEEE 754
double Double-precision floating point 64-bit IEEE 754
Other types
char A single character 16-bit Unicode character
boolean A boolean value (true or false) true or false
Source: http://java.sun.com/docs/books/tutorial/java/nutsandbolts/datatypes.html

Code of the Program : 

public class identifierandpdatatype{
  public static void main(String[] args){
    byte byteident = 3;
    short shortident=100;
    int intident = 10;
    long longident = 40000;
    char charident = 'a';
    String stringident = "chandan";
    float floatident = 12.0045f;
    double doubleident = 2333333.000000000033343343434f;
    System.out.println(byteident + " is the value of identifire 

named 'byteident' which primitive data type is byte.");
    System.out.println(shortident + " is the value of 

identifire named 'shortident' which primitive data type is short.");
    System.out.println(intident + " is the value 

of identifire named 'intident' which primitive data type is int.");
    System.out.println(longident + " is the value 

of identifire named 'longident' which primitive data type is long.");
    System.out.println(charident + " is the value 

of identifire named 'charident' which primitive data type is char.");
    System.out.println(stringident + " is the value

 of identifire named 'stringident' which primitive data type is string.");
    System.out.println(floatident + " is the value 

of identifire named 'floatident' which primitive data type is float.");
    System.out.println(doubleident + " is the value

 of identifire named 'doubleident' which primitive data type is double.");
  }
}


Download Identifier and primitive data types Example

                         

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Current Comments

5 comments so far (
post your own) View All Comments Latest 10 Comments:

Excellent

Posted by Swapna on Friday, 12.5.08 @ 04:22am | #82434

actually not able to make programs in java .basically i face prob in command line,plz help me out gv a rep as soon as possible

Posted by jaspreet on Sunday, 09.14.08 @ 18:20pm | #79350

Hi
U done good job. and I have one more doubt.....i.e:
1.What is the difference between primitive data type and Abstract data type in java?

Posted by vasu on Friday, 09.5.08 @ 13:12pm | #77236

Hello
I want to know what the benefits are of having many different data types in java and give an example of a data value that it can hold?
Thank you
Sam

Posted by Sam on Sunday, 12.9.07 @ 06:31am | #41626

u done a great job.

Posted by radhika on Wednesday, 03.21.07 @ 22:46pm | #12412

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