MainProgram_June2022.java

/***
 * Write a description of class MainProgram here.
 *
 * @author awsgus
 * @version 0.1
 ***/
public class MainProgram
{
    /* that is a method that is call main
    * this method receive a parameter that is called args
    * this method doesn´t give any answer 
    */
    public static void main(String [] args)
    {
        
        System.out.println("Hello ATA 2022 and welcome new generation !!!");
        System.out.println(args[0]);
        //variables of native data types or primitive data types
        byte data00 = 0; //8 bits ( 2 ^ 8 ) = 256 possible value from a range -127 to 127
        System.out.println(data00);
        data00 = 1;
        char aCharacter = '@'; //a character can store 16 bits (2 bytes)  ,65536 ( 2 ^ 16 ) possible values
        short aShort = 2345; //an integer variable that can store 16 bits (2 bytes)  ,65536 ( 2 ^ 16 ) possible values
        int anInt = 23434; //an integer variable that can store 32 bits (4 bytes)  ,4 294 967 296 ( 2 ^ 32 ) possible values
        long aLong = 333333333L; // an integer variable that can store 64 bits (8 bytes)  ,18 446 744 073 709 551 616 ( 2 ^ 64 ) possible values
        float aFloat = 3.141519F; //a real varaible that  can store 32 bits (4 bytes)  ,4 294 967 296 ( 2 ^ 32 ) possible values
        double aDouble = 3.141519E90; //a real varaible that  can store 64 bits (16 bytes)  ,4 294 967 296 ( 2 ^ 32 ) possible values
        System.out.println(aCharacter);
        System.out.println(aShort);
        System.out.println(anInt);
        System.out.println(aLong);
        System.out.println(aFloat);
        System.out.println(aDouble);
       
        

    }
}