CODEWITHSUNDEEP
java
Sham
Sham

Reputation: 11

BigDecimal rounding issue

I want to convert 1256.3648 to 126.36 (up to 2 decimal places)

To implement this thing, I am using .setScale(2, BigDecimal.ROUND_HALF_UP));

But for some reasons, it doesn't work

Any idea?

Upvotes: 1

Views: 747

Answers (2)

Patricia Shanahan
Patricia Shanahan

Reputation: 26185

Here is a test program demonstrating the rounding:

import java.math.BigDecimal;

public class Test {
  public static void main(String[] args) {
    BigDecimal x = new BigDecimal("1256.3648");
    BigDecimal y = x.setScale(2,BigDecimal.ROUND_HALF_UP);
    System.out.println(x);
    System.out.println(y);
  }
}

It outputs:

1256.3648
1256.36

x is unchanged, but the result of the setScale call is properly rounded.

Upvotes: 2

Santhosh
Santhosh

Reputation: 8207

You can do it this way 

.setScale(2, RoundingMode.FLOOR);

Assuming you are calling it on the BigDecimal object

will o/p

1256.36

If your input is 1256.3648

Remember,

java.math.BigDecimal.setScale(int newScale, RoundingMode roundingMode) returns a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value.

Upvotes: 2

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