Spring Beginner - No such field error -

i new spring. developing 1 sample project using spring. getting following exception when provide value in beans.xml. please provide solution.

beans.xml:

<beans xmlns="http://www.springframework.org/schema/beans"     xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"     xsi:schemalocation="http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">     <bean id="helloworld" class="com.dhr.spring.beans.helloworld">        <property  name="message"  value="d" />    </bean>  </beans> 

helloworld.java:

public class helloworld {      private string message;         public void setmessage(string message){           this.message  = message;        }         public void getmessage(){           system.out.println("your message : " + message);        } } 

mainapp:

 public class mainapp {      public static void main(string[] args) {           applicationcontext context =                   new classpathxmlapplicationcontext("beans.xml");            helloworld obj = (helloworld) context.getbean("helloworld");            obj.getmessage();        } } 

exception:

caused by: java.lang.nosuchfielderror: null     @ org.springframework.expression.typedvalue.<clinit>(typedvalue.java:31)     @ org.springframework.expression.spel.support.standardevaluationcontext.setrootobject(standardevaluationcontext.java:85)     @ org.springframework.expression.spel.support.standardevaluationcontext.<init>(standardevaluationcontext.java:74)     @ org.springframework.context.expression.standardbeanexpressionresolver.evaluate(standardbeanexpressionresolver.java:124)     @ org.springframework.beans.factory.support.abstractbeanfactory.evaluatebeandefinitionstring(abstractbeanfactory.java:1299)     @ org.springframework.beans.factory.support.beandefinitionvalueresolver.evaluate(beandefinitionvalueresolver.java:210)     @ org.springframework.beans.factory.support.beandefinitionvalueresolver.resolvevalueifnecessary(beandefinitionvalueresolver.java:182)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.applypropertyvalues(abstractautowirecapablebeanfactory.java:1360)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.populatebean(abstractautowirecapablebeanfactory.java:1118)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.docreatebean(abstractautowirecapablebeanfactory.java:517)     ... 11 more 

welcome! ambiguous world of spring! stack traces long , documentation short convoluted.

i have seen error several times and, @ least me, has dependency inconsistencies.

i see posted not using maven. can assure that problem. should using maven. amount of work save monumental.

edit: make post more answer-like: getting error due dependency inconsistencies. manually putting spring jar files dependency tree not recommended. either 1) use maven handle dependency management (recommended) or 2) ensure jar files utilize non-conflicting , coherent dependency trees.

for instance, using org.springframework.expression-3.0.3.release not part of 3.1.x group. so, replace jar file org.springframework.expression-3.1.0-release