24_printf

//  printf() = an optional method to control, format, and display text to the console window
//             two arguments = format string + (object/variable/value)
//             % [flags] [precision] [width] [conversion-character]

public class Main {
   public static void main(String[] args){

       System.out.printf("%d This is a format string",123); //>>123 This is a format string
       boolean myBoolean = true;
       char myChar = '@';
       String myString = "Bro";
       int myInt = 50;
       double myDouble = 1000;

       //[conversion-character]
       System.out.printf("%b",myBoolean);
       System.out.printf("%c",myChar);
       System.out.printf("%s",myString);
       System.out.printf("%d",myInt);
       System.out.printf("%f",myDouble);

       //[width]
       // minimum number of characters to be written as output
       System.out.printf("Hello %10s", myString); // >>Hello          Bro|
       System.out.printf("Hello %-10s", myString);// >>Hello Bro          |

       //[precision]
       // sets number of digits of precision when outputting floating-point values
       System.out.printf("You have this much money %.1f", myDouble);// >>1d.p.

       //[flags]
       // add an effect to output based on the flag added to format specifier
       // - : left-justify
       // + : output a plus (+) or minus (-) sign for a numeric value
       // 0 : numeric values are zero-padded
       // , : comma grouping separator if numbers > 1000
       System.out.printf("You have this much money %20f", myDouble); // >>You have this much money                1000.000000
       System.out.printf("You have this much money %+f", myDouble);// >>You have this much money +1000.000000
       System.out.printf("You have this much money %020f", myDouble);// >>You have this much money -000000001000.000000
       System.out.printf("You have this much money %,f", myDouble); // >>You have this much money 1,000.000000
   }