Java program codes: Java - Identifier and primitive datatype in java

Monday, 12 September 2011

Java - Identifier and primitive datatype 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

Monday, 12 September 2011

Java - Identifier and primitive datatype in java

No comments: