class KW
{
    public static void main(String args[])
    {
        System.out.println("———————————————————————————————————————————");
        System.out.println("Program to find the size of data types");
        System.out.println("———————————————————————————————————————————");
        System.out.println("Size of byte   | "+(Byte.SIZE/8)+" byte");
        System.out.println("Size of short  | "+(Short.SIZE/8)+" bytes");
        System.out.println("Size of int    | "+(Integer.SIZE/8)+" bytes");
        System.out.println("Size of long   | "+(Long.SIZE/8)+" bytes");
        System.out.println("Size of char   | "+(Character.SIZE/8)+" bytes");
        System.out.println("Size of float  | "+(Float.SIZE/8)+" bytes");
        System.out.println("Size of double | "+(Double.SIZE/8)+" bytes");
        System.out.println("———————————————————————————————————————————");
    }
}

kodingwindow@kw:~$ javac KW.java
kodingwindow@kw:~$ java KW
———————————————————————————————————————————
Program to find the size of data types
———————————————————————————————————————————
Size of byte   | 1 byte
Size of short  | 2 bytes
Size of int    | 4 bytes
Size of long   | 8 bytes
Size of char   | 2 bytes
Size of float  | 4 bytes
Size of double | 8 bytes
———————————————————————————————————————————
kodingwindow@kw:~$