How to change Double format??

Question

Java

My Double outputs: 2.189E-5
And you need all the decimal places. How to change the format?

Answer 1

Here is an example of double output formatting

double pi = Math.PI;
 
      System.out.format("%f%n", pi);       // -->  "3.141593"
      System.out.format("%.3f%n", pi);     // -->  "3.142"
      System.out.format("%10.3f%n", pi);   // -->  "     3.142"
      System.out.format("%-10.3f%n", pi);  // -->  "3.142"
      System.out.format(Locale.FRANCE,
                        "%-10.4f%n%n", pi); // -->  "3,1416"

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