BigDecimal rounded - no arrivez.5 round 1

Why can't I pas.5 to round to 1 using BigDecimal.

Here's the code;

java.math.MathContext mc = new java.math.MathContext (1, java.math.RoundingMode.HALF_UP);

Java.Math.BigDecimal obj_0 = new Java.Math.BigDecimal ("0.5");
System.out.println ("value of obj_0:" + obj_0);
System.out.println ("result generated method:" + obj_0.round (mc));

Here is the result;
obj_0 value: 0.5
result of the generated method: 0.5

This works as expected for greater than 1 decimals.

What Miss me about BigDecimal mathematically?

Thank you.

>
If you can use BigDecimal rounding to the nearest whole number (one or zero) when the value is less than 1 and greater than zero?
>
Just set the scale and the rounding mode when you use the value.

System.out.println("method generated result : " + obj_0.setScale(0, java.math.RoundingMode.HALF_UP));

method generated result : 1

Tags: Java

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