How to round number in jsp?

Question

Java

How to round number in jsp??
I divide one number by another and I got a non-round one, is it possible to make it a round number?
${rezult.a/rezult.b}
Sending an object to jsp. With jsp

Answer 1

I was puzzled by this question at one time and for myself I found such a solution

<c:set var="rezult.a" value="4"/>
<c:set var="rezult.b" value="10"/>

<%
    Float result_A = Float.valueOf("" + pageContext.getAttribute("rezult.a", PageContext.PAGE_SCOPE));
    Float result_B = Float.valueOf("" + pageContext.getAttribute("rezult.b", PageContext.PAGE_SCOPE));
    MathContext myMathContext = new MathContext(15, RoundingMode.HALF_UP);
    BigDecimal bd;
    bd = new BigDecimal((float)result_A/result_B, myMathContext);
    BigDecimal bdRounded = bd.setScale(2, RoundingMode.HALF_UP);
    pageContext.getSession().setAttribute("RESULT", bdRounded.floatValue());
%>
<br>
RESULT: ${RESULT}

RESULT: 0.4