[Math.round in Ireport]

1.
>> Result is fine but with data have many record is result fine yet

Is it means that all fine? "is fine but... fine yet" : why "but" if all fine?

2.
>> new BigDecimal.setScale(2,ROUND_HULF_UP)
This operation always return 20.05  not 20.0499999999997
Check your report. What are you show in report? Are you sure that it is result of setScale?

[Math.round() to two decimal in Ireport V5.0]

Try to use BigDecimal.setScale instead Math.round
For example as here:

  public static double round(double value, int decimalPlace) {
      return new BigDecimal(value).setScale(decimalPlace, BigDecimal.ROUND_HALF_UP).doubleValue();
  }

May be it solve your problem.
Welcome to the world of java-computing :))

 

[number display as text in excel]

            Is export wrote on java? Then

         
            exporter = new CustomExcelExporter(file);
            exporter.setParameter(JRXlsExporterParameter.IS_DETECT_CELL_TYPE, true);
 

[Empty tables]

Why table placed into ColumnHeader but not in Summary band?

[How to change Font size is dynamically or parameterized in jrxml(Ireport-4.5.0).]

In ireport select static text "Ganesh" and in Property Window (Ctrl+Shift+7) set Height=21 (or more then21). fontSize="18" does not fit in height=14 for this label.

P.S.
new Boolean($V{countNumber}.intValue() % 1 == 0   is always TRUE :D

[How to sum in total column rounded values from cells of crosstab?]

http://community.jaspersoft.com/questions/521335/crosstabs-total-calculation

[how to do sum in ireport]

Nobody can't help you without information about problem. "but it is showing me null" - it is not enough to determine the error. Create new answer with description of problem. SHOW YOUR JRXML, define database (is it Oracle? Postgress, MSSQL? or is it JRBeanCollectionDataSource?...). Show version iReport (JasperServer?)

After that you get a chance to get answer

[when am going to generate pdf i got this error. anyone you can help me]

groovy-all-1.7.5.jar   does not contain the class    org/codehaus/groovy/runtime/BytecodeInterface8

Check libraries used for compiling report (or groovy-x.y.z.jar in tomcat?)

http://stackoverflow.com/questions/7800930/error-when-deploying-grails-app-java-lang-noclassdeffounderror-org-codehaus-gr

[Number field appearing as text while taking excel output]

Show your java-code which make export to excel

[Font 'Arial' is not available to the JVM]

Make jar with fonts (in iReport) and add this jar into project

See more information in:
http://mdahlman.wordpress.com/2010/05/28/jaspersoft-v3-7-font-extensions/

[Report over several days]

iReport is not a database.

It's only dispaly existing information.

You lost information about previous day... In any moment you have info about only one day.

I think about two ways to solve problem:

1. Change script on server with aim to save information for three last days. May be add date field in table with type of date (for save day: 13.05.2013, 14.05.2013, ...). And change report.jrxml for using this date.

 

or

 

2. Make every day export data from existing report into csv (or excel? other file?). And make second report2 with this data source. But in this case you must to do:

a) add system date (for example) to report as a parameter (or variable)

b) aggregate data in one file (?)

c) design report2.jrxml 

 

The first way is easier  (imho)

Maybe someone else will give advice...

[Generate a Report with a List, Error retrieving field value from bean]

I am guess that daten is a list of geraet.

Two ways for solution:
1. Change getter for gueltigbis from "getGueltigBis()" (now) to "getGueltigbis()"  - it must match field name in jrxml (case-sensitive)
or

2 Change field "gueltigbis" to "gueltigBis" in jrxml

[Report over several days]

In linechart one axis (low for example) - is scale of Date (or Time?). In other Axis (Left) - scale of values. How you want to fit dates 13.05.2013, 14.05.2013, 15.05.2013 in one low axis??? This dates are located one after another on low axis...

[How can I get iReports to recognize the second set of fields in a second select statement?]

You mix different fields from different tables in one SQL-query. It is not problem of iReport. It is problem to make correct query. Read documentation about basic concepts of SQL.
For example:
http://databases.about.com/od/sql/l/aajoins2.htm
http://databases.about.com/od/sql/a/multiple_joins.htm

[Report over several days]

Question is not clear. Have you made attempt to disign report or not? Are you see data in report?
Which DataSource is used (SQL-query, JRBeanCollectonDataSource, XML) ?

[Wrong Preview]

I am not sure, but try to make this:
1. Make alias for second (may be third) field: select ('PREGUNTA 1') as preguntas, pregunta_1 as pregunta_1, count(*) as cnt from form_app_001 union all ...
2. Set sort field preguntas and pregunta_1 in iReport ("Sort options" button in iReport)

HTH

 

[print pies side by side]

It's very strange. May be you have another not empty fields in left or right side near pies? And this prevents to reducing space. It's need to see your jrxml... Sorry, my work time is over. I am can to participate in forum only 13.05.2013.

[print pies side by side]

Are you set "Remove line when blank" check-box in property of chart?

[Cannot connect the database]

Telepathists is gone to vacation. Which database? Which JDBC url? Are you test JDBC-connection in iReport?

[negative BigDecimal pattern returns wrong]

Pattern:
#,##0.00;(-#,##0.00)

and don't use conditional style. It is not need in this simple case

 

[Generate a Report with a List, Error retrieving field value from bean]

Show your bean (daten)  and jrxml. You should check getter for "gueltigbis"

[[Solved] OR operator in "Print when expression" field]

Try like this:
($F{FIRST} != null && !$F{FIRST}.equals(""))||($F{SECOND} != null && !$F{SECOND}.equals(""))

[Change separator caracter of a collection]

List list = new ArrayList();

list.add("one");

list.add("two");

list.add("three");

System.out.println(list.toString().replace(',', '|'));

[Data-store for Java objects.]

Set in main report properties for subreport:
Connection Type = Use a datasource expression
Data Source Expression = (like this:)new JRBeanCollectionDataSource(myCollection)

Check that you don't put DataSourceExpression into "ConnectionType" (see yuor error):
net.sf.jasperreports.engine.data.JRBeanCollectionDataSource cannot be cast to java.sql.Connection



 

[Dynamically showing text field]

Clarify your question. Put part of xml and picture desired report