Help for java.lang.NoClassDefFoundError:

Question

hi all, i wrote a jws shows the following.
import java.lang.*;
import java.util.*;
* * @author bow5003
public class CalculatorWithDLL {
private native float add(float num1, float num2);
private native float sub(float num1, float num2);
private native float mult(float num1, float num2);
private native float divid(float num1, float num2);
private native float square(float num1);
private native float tripple(float num1);
//private float result;
/** Creates a new instance of CalculatorWithDLL */
public static float getAdd(float num1, float num2) {
CalculatorWithDLL calculator = new CalculatorWithDLL();
float result = calculator.add(num1, num2);
return result;
public static float getSub(float num1, float num2){
CalculatorWithDLL calculator = new CalculatorWithDLL();
float result = calculator.sub(num1, num2);
return result;
public static float getMult(float num1, float num2) {
CalculatorWithDLL calculator = new CalculatorWithDLL();
float result = calculator.mult(num1, num2);
return result;
public static float getDivid(float num1, float num2) {
CalculatorWithDLL calculator = new CalculatorWithDLL();
float result = calculator.divid(num1, num2);
return result;
public static float getSquare(float num1) {
CalculatorWithDLL calculator = new CalculatorWithDLL();
float result = calculator.square(num1);
return result;
public static float getTriple(float num1) {
CalculatorWithDLL calculator = new CalculatorWithDLL();
float result = calculator.tripple(num1);
return result;
static {
System.loadLibrary("Calculator");
and when i try to access throw the web browser http://localhost:8080/axis/JWS_Files/CalculatorWithDLL.jws?wsdl it gives the error:
java.lang.NoClassDefFoundError: Could not initialize class CalculatorWithDLL
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.axis.utils.ClassUtils$2.run(ClassUtils.java:168)
at java.security.AccessController.doPrivileged(NativeMethod)
at org.apache.axis.utils.ClassUtils.loadClass(ClassUtils.java:160)
at org.apache.axis.utils.ClassUtils.forName(ClassUtils.java:142)
at org.apache.axis.utils.cache.ClassCache.lookup(ClassCache.java:85)
at org.apache.axis.providers.java.JavaProvider.getServiceClass(JavaProvider.java:428)
at org.apache.axis.providers.java.JavaProvider.initServiceDesc(JavaProvider.java:461)
at org.apache.axis.handlers.soap.SOAPService.getInitializedServiceDesc(SOAPService.java:286)
at org.apache.axis.handlers.JWSHandler.setupService(JWSHandler.java:273)
at org.apache.axis.handlers.JWSHandler.generateWSDL(JWSHandler.java:294)
at org.apache.axis.strategies.WSDLGenStrategy.visit(WSDLGenStrategy.java:33)
at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
at org.apache.axis.SimpleChain.generateWSDL(SimpleChain.java:104)
at org.apache.axis.server.AxisServer.generateWSDL(AxisServer.java:454)
at org.apache.axis.transport.http.QSWSDLHandler.invoke(QSWSDLHandler.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis.transport.http.AxisServlet.processQuery(AxisServlet.java:1226)
at org.apache.axis.transport.http.AxisServlet.doGet(AxisServlet.java:249)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
anyone can help me?
Message was edited by:
BCW0928
Message was edited by:
BCW0928

Answer 1

Where is the dll ?
you need to include it in a jar, and ref that jar with
<nativelib href=<url to the jar>/>
and request all-permissions in you jnlp file (and sign both jars)
/Andy