Java Starting

 // Online Java Compiler

// Use this editor to write, compile and run your Java code online

public class Main {

    public static void main(String[] args) {

        // System.out.println("hello SaeeAM");

        

        // //print no in java 

        System.out.print(3*2);

        System.out.print(55);

        System.out.println(375.6);

        

        //java variable 

        /*

        String = "SaeeAM" LIke that

        int  = 125,  546

        float  = 12.56 and 254.23 Like that

        char = 'S', 'b' LIke that signal character of english alphabet

        boolean = true or false LIke that 

        */

        

        String saeeam= "SaeeAM Startup"; //String define like that

        int myint = 15; //define like that for int

        myint = 25; // Overright this 

        float myfloat = 5.95f; //f is required that tell is float value

        char mychar = 'S';   // Singal char show like that signal quotes take experiment with double quotes work or not.

        boolean mybool = true;   // Boolean value define like that.

        

        System.out.println(saeeam);

        System.out.println(myint);

        System.out.println(myfloat);

        System.out.println(mychar);

        System.out.println(mybool);

        

        // System.out.print();  // help to help variable or anything u //want to print 

        // System.out.println(); // Same but little bit difference print every time in new line;

        

        //to Combine both text and a variable, use the + character

         System.out.println("Hello "+saeeam +" "+ mybool);

        System.out.println("SaeeAMint "+myint);

        System.out.println("SaeeAMfloat "+myfloat);

        System.out.println("SaeeAMchar "+mychar);

        System.out.println("SaeeAMbool "+mybool);

        

        //float value not assign in int variable so careful handle this things

        float myadd = myint+myfloat;

        System.out.print(myadd);

        

        

        //Do this with int 

        int x = myint *2;

        int y = myint *3;

        int z = myint *4;

        System.out.println(x+y+z);

        

        

        //Do this with Float

        float a = myfloat *2;

        float b = myfloat *3;

        float c = myfloat *4;

        System.out.println(x+y+z);

        

        

        // One Value To Multiple Variables float

        int d, e, f;

        d= e= f= 50;

        System.out.println(x+y+z);

        

        // One Value To Multiple Variables with float

        float x, y, z;

        x= y=z= 50.28f;

        System.out.println(x+y+z);

        

        //Java Identifiers how recognise variable best or not

        int minutesPerHour = 60; //Good Way to declear

        int m = 60;  //ok but not the way to declear how to recognise

        

        //Data Type

        

        //Byte Integer Type data Use like that

        byte myByteNum = 100;

        System.out.println(myByteNum);

        

        //Short how to Use

        short myShortNum = 5000;

        System.out.println(myShortNum);

        

        // //Long How to use

        long myLongNum = 1500000000000000L;

        System.out.println(myLongNum);

        

        // //Double Data Type Example

        double myDoubleNum = 19.7466d;

        System.out.println(myDoubleNum);

        

        // Boolean Types 

        boolean myBooleanNum = true;

        boolean myBooleanNum1 = false;

        System.out.println(myBooleanNum);

        System.out.println(myBooleanNum1);

        

    //   // Ascii Value can be fount any int number through below example

        char myVar1 = 68, myVar2 = 66, myVar3 = 67;

        System.out.println(myVar1);

        System.out.println(myVar2);

        System.out.print(myVar3);

        

        

        //Data Casting --> Two Type

        //1st Widening Casting

        //byte -> short -> char -> int -> long -> float -> double 

        

        // //Byte -> Short

            byte mybyte = 9;

            short myshort = mybyte; //Automatic Casting: int to double

                

        // //Char -> Int        

            char mychar = 'S';

            int myint = mychar;

        

        // //Long -> Float        

            long mylong = 95665656666L;

            float myfloat = mylong;

        

        // //Float -> Double        

            float myflot = 5.95f;

            double myDouble = myflot;

                

            System.out.println(myshort);

            System.out.println(myDouble);

            System.out.println(myint);

            System.out.println(myfloat);

        

        //Narrowing Casting

        double myDouble = 9.78d;

        int myInt = (int) myDouble; //Manual casting: double to int

        

        System.out.println(myDouble);

        System.out.print(myInt);

        

        

    }

    

}