Decimals in Java

[ragol_67]

How do you assign a certain number of decimal points in a java program?

When I print out a message using System.out.println, the system prints out numbers with about 10 decimal places.

Thanks,
Nick!

[Jason]

import java.text.NumberFormat;
..................
      NumberFormat nf = NumberFormat.getNumberInstance() ;
      nf.setGroupingUsed(false) ;     // don't group by threes
      nf.setMaximumFractionDigits(2) ;
      nf.setMinimumFractionDigits(2) ;
      System.out.println("float unformatted " + d1 + " now formatted " + nf.format(d1));

Jason

[Celtboy]

it also depends on what type your variables are. Floats, doubles, ints...

Otherwise the numberformat class is the way to go.

[ragol_67]

My variables are declared as doubles.

Could someone please give me an example of how to implement the above code?


Thanks,
Nick!

[Brandoe85]

That code is all you need:

PHP Code:

import java.text.NumberFormat;
public class decimals

{
    public static void main(String[] args)

    {
        NumberFormat nf = NumberFormat.getNumberInstance() ;
        nf.setGroupingUsed(false) ;     // don't group by threes
        nf.setMaximumFractionDigits(2) ;
        nf.setMinimumFractionDigits(2) ;
        double d1 = 3.427223;
          System.out.println("float unformatted " + d1 + " now formatted " + nf.format(d1));

    }

} 


[ragol_67]

Ah, okay! I've got it.

Thank You!!