How to fill jasper report using csv file ?

[Micale Raj]

Hi,
I'm new to jasper report and i want to fill jasper report using csv file. Report was created using
iReport and it is working properly on iReport . But i can't call it using java code. Please can somebody help me out to solve this problem .
Thank you !

[Ulf Dittmer]

But i can't call it using java code.

Why not? That's what JasperReports is for, after all.

The http://faq.javaranch.com/java/OtherOpenSourceProjectsFaq has a couple of links regarding JR that you should check out.

[Micale Raj]

Ulf Dittmer wrote:

But i can't call it using java code.

Why not? That's what JasperReports is for, after all.

The http://faq.javaranch.com/java/OtherOpenSourceProjectsFaq has a couple of links regarding JR that you should check out.

Thank you very much for your help. But I'm getting NullPointerException on my code and can't figure out whats wrong. This is my code.

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package jasper;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.data.JRCsvDataSource;
import net.sf.jasperreports.view.JasperViewer;

/**
 *
 * 
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Main mainClass = new Main();
        try{
            mainClass.rptCSV();
        } catch( Exception exception ){
            exception.printStackTrace();
        }
    }
    private void rptCSV() {
        Map parameters = new HashMap();
        parameters.put("ReportTitle", "Address Report");
        Set states = new HashSet();
        states.add("Active");
        states.add("Trial");
        parameters.put("IncludedStates", states);
        try {
            JasperFillManager.fillReportToFile("I:\\final\\report10.jasper", parameters, getDataSource());
            JasperViewer.viewReport("I:\\final\\report10.jrprint", false);
        } catch (JRException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
    }
    private static JRCsvDataSource getDataSource() throws JRException, IOException
    {
        //JRLoader.getLocationInputStream(
        JRCsvDataSource ds = new JRCsvDataSource(new File("I:\\final\\print_for_tab.csv"));
        ds.setRecordDelimiter("\t");
        ds.setUseFirstRowAsHeader(true);
        ds.setFieldDelimiter(';');
        return ds;
    }

}

and i'm getting stack trace as

java.lang.NullPointerException
at net.sf.jasperreports.engine.JRPropertiesMap.readObject(JRPropertiesMap.java:185)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:88)
at net.sf.jasperreports.engine.JasperFillManager.fillReportToFile(JasperFillManager.java:443)
at jasper.Main.rptCSV(Main.java:45)
at jasper.Main.main(Main.java:32)

thanks for reading this.