MyFormatter.java

public class MyFormatter {
    public static void main(String[] args) {
        System.out.println(String.format("%s", "Hi Chris"));       // "Hi Chris"
        System.out.println(String.format("%d", 42));               // "42"
        System.out.println(String.format("%f", Math.PI));          // "3.141593"
        System.out.println();
        System.out.println(String.format("%4d", 2));               // "   4"
        System.out.println(String.format("%04d", 2));              // "0004"
        System.out.println();
        System.out.println(String.format("%.3f", Math.PI));        // "3.142"
        System.out.println(String.format("%8.3f", Math.PI));       // "   3.142"
        System.out.println(String.format("%08.3f", Math.PI));      // "0003.142"
        System.out.println();
        System.out.println(String.format("$%,.2f", 58000000.456)); // "$58,000,000.46"
        System.out.println();
        System.out.println(String.format("I am %d years old, I have $%,.2f in my wallet, and my name is %s.", 108, 58000000.456, "James"));
    }
}

/*
This prints the following:

Hi Chris
42
3.141593

   2
0002

3.142
   3.142
0003.142

$58,000,000.46

I am 108 years old, I have $58,000,000.46 in my wallet, and my name is James.
*/