Round to 2 decimals in java

Question

I have an array of numbers that have many decimal formats. How do I take that array and round everything to 2 decimal places? Ex 10.52

Check this out http://stackoverflow.com/a/153753/2291134 – gjman2 Sep 17 '13 at 01:08 — gjman2, Sep 17 '13 at 01:08

score 0 · Answer 1 · answered Sep 17 '13 at 01:08

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DecimalFormat df = new DecimalFormat("#.##"); df.format(10.52777);

answered Sep 17 '13 at 01:08

Pulkit Sethi

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score 0 · Answer 2 · answered Sep 17 '13 at 01:09

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trying using BigDecimal http://docs.oracle.com/javase/6/docs/api/java/math/BigDecimal.html

When using you can then set the scale to 2 or whatever you want. If however you just want to display as 2 digits then you can use System.out.printf("%.2f", val); or DecimalFormat df = new DecimalFormat("#.##");

answered Sep 17 '13 at 01:09

Scary Wombat

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I am not needing to print them out right now. I just need to take my array of numbers and cut them into 2 decimal places. The decimal format wouldnt work then. – Chris Sep 17 '13 at 01:17
so, as per the first part of my answer, use BigDecimal - perfect for rounding – Scary Wombat Sep 17 '13 at 01:25

Round to 2 decimals in java

2 Answers2