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POJasperReports: getting "java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory" Exception
 

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  1. POJasperReports: getting "java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory" Exception
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    <p>I have created a report (<em>JasperReports 5.5</em>) using the <em>JasperReports plugin</em> for <em>NetBeans 6.9.1</em> (<em>Java 1.6</em>). I can create a report and the report can be successfully viewed using the Preview tab of the <em>JasperReports Plugin</em>. But when I use <em>Java</em> code to access the report it gives the following Error:</p> <pre><code>Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:155) at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:131) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:272) at net.sf.jasperreports.engine.util.JRLoader.&lt;clinit&gt;(JRLoader.java:68) at net.sf.jasperreports.engine.JRPropertiesUtil.loadProperties(JRPropertiesUtil.java:99) at net.sf.jasperreports.engine.DefaultJasperReportsContext.initProperties(DefaultJasperReportsContext.java:94) at net.sf.jasperreports.engine.DefaultJasperReportsContext.&lt;init&gt;(DefaultJasperReportsContext.java:71) at net.sf.jasperreports.engine.DefaultJasperReportsContext.&lt;clinit&gt;(DefaultJasperReportsContext.java:59) at net.sf.jasperreports.engine.JasperCompileManager.getDefaultInstance(JasperCompileManager.java:84) at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:459) at Interfaces.MainMenu.jMenuItem3ActionPerformed(MainMenu.java:854) at Interfaces.MainMenu.access$1300(MainMenu.java:50) at Interfaces.MainMenu$14.actionPerformed(MainMenu.java:494) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.AbstractButton.doClick(AbstractButton.java:357) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:850) at java.awt.Component.processMouseEvent(Component.java:6288) at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) at java.awt.Component.processEvent(Component.java:6053) at java.awt.Container.processEvent(Container.java:2041) at java.awt.Component.dispatchEventImpl(Component.java:4651) at java.awt.Container.dispatchEventImpl(Container.java:2099) at java.awt.Component.dispatchEvent(Component.java:4481) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168) at java.awt.Container.dispatchEventImpl(Container.java:2085) at java.awt.Window.dispatchEventImpl(Window.java:2478) at java.awt.Component.dispatchEvent(Component.java:4481) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:643) at java.awt.EventQueue.access$000(EventQueue.java:84) at java.awt.EventQueue$1.run(EventQueue.java:602) at java.awt.EventQueue$1.run(EventQueue.java:600) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) at java.awt.EventQueue$2.run(EventQueue.java:616) at java.awt.EventQueue$2.run(EventQueue.java:614) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:613) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ... 51 more </code></pre> <p>When I add the mentioned JAR file it gives the same error with a different JAR and it goes on and on.</p> <p>I have used the following code to access the report.</p> <pre><code>try { String report = "C:\\Users\\Admin\\Documents\\WarrantReport.jrxml"; JasperReport jr = JasperCompileManager.compileReport(report); JasperPrint jp = JasperFillManager.fillReport(jr, null, c); JasperViewer.viewReport(jp); } catch (JRException ex) { Logger.getLogger(MainMenu.class.getName()).log(Level.SEVERE, null, ex); } </code></pre> <p>I have added the following 5 JAR files to my Project folder Libraries:<br/> jasperreports 5.5 applet, fonts, functions, javaflow.</p> <p>Please help me find the error.</p>
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    1. COYou should consider using some dependecy managers like maven. Those really help solve no class def found exceptions becouse they automatically get all needed jars.
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    2. COpossible duplicate of [java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory](http://stackoverflow.com/questions/12926899/java-lang-noclassdeffounderror-org-slf4j-loggerfactory)
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    3. CO@AlexK.. can you please elaborate? your answer is unclear.
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