noclassdeffounderror

问题 package myfirst; import org.apache.poi.hssf.usermodel.*; import org.apache.poi.ss.usermodel.*; import java.io.FileInputStream; import java.lang.Iterable; import java.net.URL; import java.net.URLConnection; import java.sql.*; public class ReadExcel { public static String fileToBeRead = "C:/Documents and Settings/Developer/Desktop/Anand exmps/Anand.xls"; public static void main(String argv[]) { String urlcnt=" "; Connection con=null; Statement stmt=null; int i=0; int j=0; try { HSSFWorkbook

问题 I am getting the following message when referencing a JAR I have added to my Android project: The JAR is located in my libs/ folder and is directly referenced in the Build Path The JAR is 'checked' in the "Order and Export" tab From what information I can gather on adding JARs to Android projects, this procedure seems to be correct. Any clue as to what is causing this error? 来源： https://stackoverflow.com/questions/22214603/android-java-lang-noclassdeferror-when-using-external-jar

问题 I've built by Maven a war file that uses other war overlays as dependencies... The built was successful. But while deploying to Jboss I get the following error: 11:27:49,054 ERROR [org.springframework.web.context.ContextLoader] (MSC service thread 1-1) .... nested exception is java.lang.NoClassDefFoundError: org/springframework/core/type/classreading/AnnotationMetadataReadingVisitor at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents

问题 My app gives NoClassDefFoundError for versions of sdk 19 or below. I had in my gradle android { compileSdkVersion 23 buildToolsVersion "23.0.1" defaultConfig { applicationId "com.idg.mail" minSdkVersion 14 targetSdkVersion 23 multiDexEnabled = true } Now i tried to change it to compileSdkVersion 19 buildToolsVersion "23.0.1" defaultConfig { applicationId "com.idg.gatcamail" minSdkVersion 19 targetSdkVersion 19 multiDexEnabled = true } i changed in app-> module settings - android - sdk as well

问题 well I'm trying to configure the project with Ant and this is what I get: D:\Dropbox\EclipseWorkspace\PIRS_Arturas_Masaitis\src\lib>dir Volume in drive D is WinMedia Volume Serial Number is 8ED9-B662 Directory of D:\Dropbox\EclipseWorkspace\PIRS_Arturas_Masaitis\src\lib 2012.11.20 16:11 <DIR> . 2012.11.20 16:11 <DIR> .. 2012.10.16 22:03 315.805 commons-lang3-3.1.jar 2012.10.23 23:08 176.897 commons-validator-1.4.0.jar 2012.11.20 15:30 <DIR> hibernate 2012.11.16 04:48 253.160 junit-4.10.jar

问题 I reference a jar file from JBoss 7.1 module according to the instructions provided in a stackoverflow question here. I have used this jar in JBoss 5.x, 6.x without any issue. However, when I try to deploy a war file in JBoss 7.1 which references the above jar, it gives me the following error: 15:59:19,220 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host]. [/Max_client]] (MSC service thread 1-2) StandardWrapper.Throwable: java.lang NoClassDefFoundError: org/xml/sax

问题 In my app, in runtime I was getting java.lang.NoClassDefFoundError: org/jaxen/NamespaceContext So after looking into this thread I added dom4j.jar and jaxen.jar to my classpath using maven: <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency> <dependency> <groupId>jaxen</groupId> <artifactId>jaxen</artifactId> <version>full</version> </dependency> After dong that I have encountered a differnt exception: java.lang.NoClassDefFoundError: org

问题 I'm using my school's server which already have hadoop and mahout. But I need to parse csv to vector. So I tried someone else code from git. But I got the following exception which I can't solve. dcmac04:dir username$ java -jar BigDataNaiveBayes_fat.jar May 30, 2015 1:48:17 AM org.apache.hadoop.util.NativeCodeLoader <clinit> WARNING: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable May 30, 2015 1:48:17 AM org.apache.hadoop.io.compress

问题 I am new to Java and learning how to export applications to .jar files. I made a simple Java application in Eclipse with a few classes based on the tutorial from Eclipse and Java for Total Beginners. When I run my application via Run -> Run in Eclipse, my application runs without exceptions. However, when I got to File -> Export and export my application into a .jar file and then execute java myLibrary.jar in my Mac terminal, I get this output from standard error. Exception in thread "main"

问题 I am getting the following error when I am trying to use the library during runtime: java.lang.NoClassDefFoundError: com.google.api.client.extensions.android2.AndroidHttp I have added this library to my project, it is the first jar of the Maven dependencies( I am not 100% used to Maven though). Also,My understanding is that Ant is looking for the jars in a libs folder, but Maven is using its own folder, and that works fine for an other project. So I am lost..any clues/help on how should I