java - NoClassDefFoundError: org/apache/commons/logging/LogFactory -


i'm new in jasperreports , want integrate jasperreports java program, when click print button program show report. noclassdeffounderror when click button.

code

jbutton btnreport= new jbutton("report"); btnreport.addactionlistener(new actionlistener() {     public void actionperformed(actionevent arg0) {          try{             string filename= "src/learnreport/leaf_grey.jasper";             connection con = connect.getconnect();             file file = new file(namefile);             jasperreport jasperreport = (jasperreport) jrloader.loadobject(file);             jasperprint jasperprint = jasperfillmanager.fillreport(jasperreport, null,con);             jasperviewer.viewreport(jasperprint,false);         } catch(exception ex){             system.out.println(ex);         }     }    });

runtime error

exception in thread "awt-eventqueue-0" java.lang.noclassdeffounderror: org/apache/commons/logging/logfactory     @ net.sf.jasperreports.engine.util.jrloader.<clinit>(jrloader.java:81)     @ learnreport.learning$6.actionperformed(learning.java:195)     @ javax.swing.abstractbutton.fireactionperformed(unknown source)     @ javax.swing.abstractbutton$handler.actionperformed(unknown source)     @ javax.swing.defaultbuttonmodel.fireactionperformed(unknown source)     @ javax.swing.defaultbuttonmodel.setpressed(unknown source)     @ javax.swing.plaf.basic.basicbuttonlistener.mousereleased(unknown source)     @ java.awt.component.processmouseevent(unknown source)

you have missed jar file "org-apache-commons-logging.jar". load jar project. issue going resolved.


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