Format a number our way and the default way

     
import java.text.NumberFormat;

/*
 * Format a number our way and the default way.
 */
public class NumFormat2 {
  /** A number to format */
  public static final double data[] = {
    0, 1, 22d/7, 100.2345678
  };

  /** The main (and only) method in this class. */
  public static void main(String[] av) { 
    // Get a format instance
    NumberFormat form = NumberFormat.getInstance();

    // Set it to look like 999.99[99]
    form.setMinimumIntegerDigits(3);
    form.setMinimumFractionDigits(2);
    form.setMaximumFractionDigits(4);

    // Now print using it.
    for (int i=0; i<data.length; i++)
      System.out.println(data[i] + "\tformats as " +
        form.format(data[i]));
  }
}

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Format a number our way and the default way : Number Format « Data Type « Java

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