I use netbeans 8.0.2 in windows.
When execute my program in netbeans for create jasperreport, the execution throw this error:
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:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1896) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1707) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1345) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:88) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:232) at PckEtiGotta.PrintEngineModel.imprimirVectorEtiquetes(PrintEngineModel.java:832) at PckEtiGotta.TreballadorSwing.doInBackground(TreballadorSwing.java:193) at PckEtiGotta.TreballadorSwing.doInBackground(TreballadorSwing.java:16) at javax.swing.SwingWorker$1.call(SwingWorker.java:295) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at javax.swing.SwingWorker.run(SwingWorker.java:334) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)
My code is more long, but I don't copy all code, I see that the program stop here
try{
file = "C:\\example.jasper"
print=JasperFillManager.fillReport(file, map,con);
}catch(Exception e){
e.printStackTrace();
throw new EtiGottaException("PrintEngineModel: "+e.getMessage());}
Sorry for my English.
I solved the problem, I explain the solution for others user have same problem.
-Go to: "C:\Program files\Jaspersoft\iReport-x.x.x\ireport\modules\ext"
-Copy this files in "C:\Program files\java\jre1.x.x\lib\ext" and "C:\Program files\java\jdk1.x.x\jre\lib\ext":
•commons-beanutils-x.x
•commons-collections-x.x
•commons-digester-x.x
•commons-javaflow-xxxxxxxx
•commons-logging-x.x.x
•jasperreports-x.x.x
•itext-x.x.x