How do I round 12.443 to 12.40

Question

I'm making a calculation and I'm getting 12,443. I want to round it to 12,40. This is the way I'm trying to do it but I'm getting 12 instead of 12,40

float result = Math.round( (new Float(result1)*0.3) + (new Float(result2)*0.7) );
vprosvasis.setText( Float.toString(result) );

Examples:

• if I get 12,70001 I want to round to 12,7
• if i get 13,4402 to round it to 13,4
• 11,19 to 11,2

So, the final number will always be in ##.@ format

Answer 1

(float)Math.round(value * 10) / 10

should give you the result you want.