Erro relatorio

Programação Java
#1

Estou testando o Jasper com eclipse, quando mando imprimir me aparece esse erro:

Exception in thread “AWT-EventQueue-0” java.lang.NoClassDefFoundError: Could not initialize class net.sf.jasperreports.engine.design.JRJavacCompiler
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at net.sf.jasperreports.engine.JasperCompileManager.getCompiler(JasperCompileManager.java:823)
at net.sf.jasperreports.engine.JasperCompileManager.getEvaluator(JasperCompileManager.java:380)
at net.sf.jasperreports.engine.fill.JRFillDataset.createCalculator(JRFillDataset.java:484)
at net.sf.jasperreports.engine.fill.BaseReportFiller.(BaseReportFiller.java:154)
at net.sf.jasperreports.engine.fill.JRBaseFiller.(JRBaseFiller.java:268)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.(JRVerticalFiller.java:69)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.(JRVerticalFiller.java:57)
at net.sf.jasperreports.engine.fill.JRFiller.createBandReportFiller(JRFiller.java:219)
at net.sf.jasperreports.engine.fill.JRFiller.createReportFiller(JRFiller.java:234)
at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:178)
at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:310)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:771)
at view.Relatorios.geraRelatorio(Relatorios.java:316)
at view.Relatorios$1.mouseClicked(Relatorios.java:59)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

#2

Pode mostrar os códigos relativos a essas linhas?

#3

No caso é um botão que chama a função

public void geraRelatorio() {
HashMap param = new HashMap();
try {
JasperPrint jp = JasperFillManager.fillReport(“src/reports/Blank_A4.jasper”, param);
JasperViewer jw = new JasperViewer(jp);
jw.setVisible(true);
} catch (JRException e) {

		e.printStackTrace();
	}
}
#4

Tem certeza que colocou todos os jars do jasper no classpath?

#5

Sim

image

#6

https://mvnrepository.com/artifact/net.sf.jasperreports/jasperreports/6.5.1

Dá uma olhada neste link mostra todas as dependencias pode ser que vc está utilizando algum recurso destas libs e por isso não inicializa … eu acho se puder utilize maven facilita bastante