Use Formatter to vertically align numeric values. : Formatter Specifiers « Development « Java Tutorial

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Java Tutorial » Development » Formatter Specifiers

6. 5. 10. Use Formatter to vertically align numeric values.


import java.util.Formatter;



public class Main {

  public static void main(String[] argv) throws Exception {

    double data[] = { 12.3, 45.6, -7.89, -1.0, 1.01 };

    Formatter fmt = new Formatter();



    fmt.format("%12s %12s\n", "Value", "Cube Root");



    for (double v : data) {

      fmt.format("%12.4f %12.4f\n", v, Math.cbrt(v));

    }

    System.out.println(fmt);

  }

}

/*       Value    Cube Root

     12.3000       2.3084

     45.6000       3.5726

     -7.8900      -1.9908

     -1.0000      -1.0000

      1.0100       1.0033



*/

6. 5. Formatter Specifiers
	6. 5. 1.	Formatting Output with Formatter
	6. 5. 2.	The Format Specifiers
	6. 5. 3.	The %g format specifier causes Formatter to use either %f or %e, whichever is shorter
	6. 5. 4.	Hex: %x, Octal: %o: Integer hexadecimal, Octal integer
	6. 5. 5.	%h: Hash code of the argument
	6. 5. 6.	%a: Floating-point hexadecimal
	6. 5. 7.	Unknown Format Conversion Exception
	6. 5. 8.	Formatter with different data types
	6. 5. 9.	using the %t specifier with Formatter.
	6. 5. 10.	Use Formatter to vertically align numeric values.
	6. 5. 11.	Use Formatter to left-justify strings within a table.
	6. 5. 12.	Using group separators.
	6. 5. 13.	The # symbol shows a digit or nothing if no digit present

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