automatic result: System.out.println()

// import java.lang.Math; // Activate if needed
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Locale;

public class str_format {

    public static void main(String[] args) {
        // String format: %[parameter_index$][flags][width][.precision]conversion_target

        String name = "tony stark";
        String city = "bogor";
        String movie = "avengers";
        String job = "worker";

        ArrayList<String> index = new ArrayList<String>(); // CREATE ARRAY

        // EXAMPLE: 1
        index.add(String.format("name is %s, live in %S", name, city));
        index.add(String.format("name is %1$s, live in %2$S watch %3$s job: %4$s %n", name, city, movie, job)); // POSITION (index)
        index.add(String.format("To be integer %40d others way", (int) Math.round(101.99)));
        index.add(String.format("To be integer %,d others way", -1010987654));
        index.add(String.format(Locale.ITALY, "To be integer %,d local", 1010987654));
        index.add(String.format(Locale.ITALY, "To be precision %,.3f local", -10109.87654)); // PRECISION
        index.add(String.format(Locale.ITALY, "To be zero float %,.0f local", -10109.87654));
        index.add(String.format("value is %f", 32.33434));
        index.add(String.format("value is %32.12f", 32.33434)); //returns 12 char fractional part filling with 0

        // EXAMPLE: 2
        index.add(String.format("Integer %d", 101));
        index.add(String.format("String %s", "great person: Muhammad"));
        index.add(String.format("Float %,f", 1_000_101.00));
        index.add(String.format("Hexadecimal %x", 101));
        index.add(String.format("Char %c", 'c'));

        // EXAMPLE: 3
        index.add(String.format("%d", 101));
        index.add(String.format("|%10d|", 101)); // Specifying length of integer
        index.add(String.format("|%-10d|", 101)); // Left-justifying within the specified width
        index.add(String.format("|% d|", 101));
        index.add(String.format("|%010d|", 101)); // Filling with zeroes
        index.add(String.format("To be integer %d", (int) 101.99));
        index.add(String.format("To be integer %d other way", (int) Math.round(101.99)));
        index.add(String.format("To be integer %40d others way", (int) Math.round(101.99))); // flags

        // DATE TIME EXAMPLE
        LocalDateTime today = LocalDateTime.now();
        index.add(String.format("Today is %tA", today));
        index.add(String.format("Full date is %1$tA year %1$tY month %1$tm date %1$tm", today));
        index.add(String.format("short date is %1$td.%1$tm.%1$ty %n", today));
        index.add(String.format("Time is hours %tH: minutes %tM: seconds %tS %n", today, today, today));

        for (String result : index) {
            System.out.println(result);
        }

    }
}