java - Spring servlet configuration file throws exception -

i following exception:

build path incomplete. cannot find class file com/hexgen/core/ihexgendictionarybased 

this line above exception:

<context:component-scan base-package="com.hexgen.api.facade" /> 

this complete xml file:

<?xml version="1.0" encoding="utf-8"?> <beans xmlns="http://www.springframework.org/schema/beans"     xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"      xmlns:context="http://www.springframework.org/schema/context"     xmlns:mvc="http://www.springframework.org/schema/mvc"     xmlns:sec="http://www.springframework.org/schema/security"     xsi:schemalocation="                 http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd                 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd                 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd                 http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd">      <sec:global-method-security pre-post-annotations="enabled"                                 secured-annotations="enabled"                                 authentication-manager-ref="authenticationmanager"                                 proxy-target-class="true">         <sec:expression-handler ref="expressionhandler"/>     </sec:global-method-security>      <bean id="expressionhandler" class="org.springframework.security.access.expression.method.defaultmethodsecurityexpressionhandler">         <property name="permissionevaluator" ref="hexgenpermissionevaluator" />     </bean>      <bean id="hexgenpermissionevaluator" class="com.hexgen.api.facade.security.hexgenpermissionevaluator"/>      <context:component-scan base-package="com.hexgen.api.facade" />     <mvc:annotation-driven />     <context:annotation-config /> </beans> 

can explain have fix this?

you need make sure wherever com/hexgen/core/ihexgendictionarybased class (or .class file) location needs on build path (or classpath). if it's in other hexgen-core.jar example make sure add build path (using eclipse) or classpath (using -cp parameter).

if file in other project directory add /src source directory spring project , core classes automatically on classpath.