{
        Scanner in = new
        Scanner(System.in);
        int x,y;
        x = 1;
        y = 2;
        System.out.println("x = "+x);
        // error because system is written without capital
        System.out.println("y = "+y);
        System.out.println(x);
        // the thing written between the brackets without quotation is taken by its value
        System.out.println("x");
        // but within quotations its taken as it is
        System.out.println(x+y);

        String s = "x+y =";
        System.out.println(s+x+y);
        //you are adding s to x , s is a string, x is an int, so , it converts x to a string, so it's like , it created a new hidden string which contains "x + y = Value_of_x"
        // to fix this :-
        System.out.println(s+(x+y));
        // string takes anything , words / numbers , but it takes them as words, so cant be added , example :
        String num = "1";
        String bum = "2";
        System.out.println(num+bum);
        System.out.println("x + y = "+x+y);
       }




}
------------------------------------------------------------------
Scanner in = new
        Scanner(System.in);

        double x,y;

        System.out.print("x=");
        // we use the thing above to make x= appear in the function screen
        x = in.nextDouble();

        System.out.print("y=");
        y = in.nextDouble();


        System.out.println("x+y ="+(x+y));

        System.out.println("x-y ="+(x-y));

        System.out.println("x*y ="+(x*y));

        System.out.println("x/y ="+(x/y));
    }
}
----------------------------------------------------------

        Scanner in = new Scanner(System.in);

        int x, y;

        System.out.print("x=");
        // we use the thing above to make x= appear in the function screen
        x = in.nextInt();

        System.out.print("y=");
        y = in.nextInt();

        System.out.println("x+y =" + (x + y));

        System.out.println("x-y =" + (x - y));

        System.out.println("x*y =" + (x * y));

        /*
         * if (y == 0) { System.out.println("x/y =" + " infinity " ); // u can
         * type "x/y = infinity " instead // division line here }
         *
         * else { System.out.println("x/y =" + x/y);
         *
         * }
         */

        if (y == 0) {
            System.out.println("x/y = infinity");
        }
        if (y != 0) {
            System.out.println("x/y =" + x / y);
        }

        // System.out.println(0.1+0.2);
        // fun line :P
        // System.out.println(5/0);

    }
}
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