Use formatted IO with System.out.printf() in Java

Description

The following code shows how to use formatted IO with System.out.printf().

Example


/*from ww w.  ja  v  a  2 s .  co m*/
public class Main {
  public static void main(String args[]) {
    System.out.println("Here are some numeric values " + "in different formats.\n");

    System.out.printf("Various integer formats: ");
    System.out.printf("%d %(d %+d %05d\n", 3, -3, 3, 3);

    System.out.println();

    System.out.printf("Default floating-point format: %f\n", 1234567.123);
    System.out.printf("Floating-point with commas: %,f\n", 1234567.123);
    System.out.printf("Negative floating-point default: %,f\n", -1234567.123);
    System.out.printf("Negative floating-point option: %,(f\n", -1234567.123);

    System.out.println();

    System.out.printf("Line-up positive and negative values:\n");
    System.out.printf("% ,.2f\n% ,.2f\n", 1234567.123, -1234567.123);

  }
}

The code above generates the following result.





















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