Question

Control the digits after decimal point in float numbers

Asked by: bworld

How I can control the digits after decimal point in float numbers ?

For example I have this number 11.656565 I want to display as 11.65

I need an example in JSP

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Asked On
2009-04-06 at 00:45:32ID24297348
Topics

Java Server Pages (JSP)

,

J2EE

,

Java Programming Language

Participating Experts
3
Points
500
Comments
11

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Answers

 

by: ksivananthPosted on 2009-04-06 at 00:47:17ID: 24075050

use BigDecimal!

 

by: ksivananthPosted on 2009-04-06 at 00:48:27ID: 24075056

for e.g.,

new BigDecimal( 11.656565 ).setScale( 2, BigDecimal.ROUND_HALF_UP ).doubleValue() ;

 

by: bworldPosted on 2009-04-06 at 01:00:30ID: 24075106

ksivananth

I used the previous statement with out.print but I get error as follow
out.print(new BigDecimal(fldValue).setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue() + " %");


HTTP Status 500 - 
 
--------------------------------------------------------------------------------
 
type Exception report
 
message 
 
description The server encountered an internal error () that prevented it from fulfilling this request.
 
exception 
 
org.apache.jasper.JasperException: Unable to compile class for JSP
 
An error occurred at line: 156 in the jsp file: /murad_scripts/imfIdentifyDefault.jsp
Generated servlet error:
BigDecimal cannot be resolved to a type
 
An error occurred at line: 156 in the jsp file: /murad_scripts/imfIdentifyDefault.jsp
Generated servlet error:
BigDecimal.ROUND_HALF_UP cannot be resolved to a type
 
 
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	com.moximedia.aims.servlet.filter.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:58)
	net.geocortex.imf.security.http.AuthorizationFilter.doFilter(AuthorizationFilter.java:147)
 
 
root cause 
 
org.apache.jasper.JasperException: Unable to compile class for JSP
 
An error occurred at line: 156 in the jsp file: /murad_scripts/imfIdentifyDefault.jsp
Generated servlet error:
BigDecimal cannot be resolved to a type
 
An error occurred at line: 156 in the jsp file: /murad_scripts/imfIdentifyDefault.jsp
Generated servlet error:
BigDecimal.ROUND_HALF_UP cannot be resolved to a type
 
 
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
	org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	com.moximedia.aims.servlet.filter.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:58)
	net.geocortex.imf.security.http.AuthorizationFilter.doFilter(AuthorizationFilter.java:147)
 
 
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.
 
 
--------------------------------------------------------------------------------
 
Apache Tomcat/5.5.17

                                              
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by: pkwanPosted on 2009-04-06 at 01:56:28ID: 24075362

Hi, bworld.

You need to import the BigDecimal class like this:

<%page import="java.math.BigDecimal" %>

 

by: bworldPosted on 2009-04-07 at 01:16:46ID: 24084889

How I use output.print with BigDecimal statement ?

How I can use BigDecimal statement to represent values of variables ?

I need an examples for that

 

by: objectsPosted on 2009-04-11 at 15:13:59ID: 24123754

 

by: bworldPosted on 2009-04-13 at 07:01:19ID: 24129841

I need an example with JSP for that

For example if I have this variable
vr_Avg = 89.996527

I want to show like
89.99

How ?

 

by: objectsPosted on 2009-04-13 at 15:38:02ID: 24133467

<fmt:formatNumber value="${vr_Avg}" maxFractionDigits="2" minFractionDigits="2"/>

20120131-EE-VQP-002

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