spring - Could not instantiate bean : Constructor threw exception; nested exception is java.lang.NullPointerException -

package basedao;  public interface basedao {      public void create(object obj);     public void delete(object obj);     public void update(object obj);     public void get(object obj); }  package basedao; import org.hibernate.session; import org.hibernate.sessionfactory; import org.springframework.beans.factory.annotation.autowired;   public abstract  class basedaoimpl implements basedao {      @autowired     private  sessionfactory usermanagementsessionfactory;     private  session session = usermanagementsessionfactory.getcurrentsession();      /*-----------------to save object--------------*/      public void create(object obj){         session.save(obj);     }      /*-----------------to delete object--------------*/       public void delete(object obj){         session.delete(obj);     }      /*-----------------to update object--------------*/      public void update(object obj){         session.update(obj);     }      /*-----------------to find/get object--------------*/      public void get(object obj){      }        protected sessionfactory getusermanagementsessionfactory() {         return usermanagementsessionfactory;     }       protected void setusermanagementsessionfactory(             sessionfactory usermanagementsessionfactory) {         this.usermanagementsessionfactory = usermanagementsessionfactory;     }  }     <?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:util="http://www.springframework.org/schema/util"     xmlns:context="http://www.springframework.org/schema/context"     xmlns:jee="http://www.springframework.org/schema/jee"     xsi:schemalocation="http://www.springframework.org/schema/beans         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd         http://www.springframework.org/schema/util         http://www.springframework.org/schema/util/spring-util-3.0.xsd         http://www.springframework.org/schema/context          http://www.springframework.org/schema/context/spring-context.xsd         http://www.springframework.org/schema/jee          http://www.springframework.org/schema/jee/spring-jee-3.0.xsd">      <util:properties id="usermanagementhibernateproperties" location="classpath:usermanagement-hibernate.properties" />      <bean id="usermanagementsessionfactory"         class="org.springframework.orm.hibernate4.localsessionfactorybean">         <property name="datasource" ref="usermanagementdatasource" />         <property name="configlocation" value="classpath:hibernate.cfg.usermanagement.xml" />         <property name="configurationclass" value="org.hibernate.cfg.annotationconfiguration" />         <property name="hibernateproperties" ref="usermanagementhibernateproperties" />     </bean>      <jee:jndi-lookup id="usermanagementdatasource" jndi-name="java:usermanagementds" />      <bean id="city" class="com.ecom.data.entities.user.city"/>     <bean id="state" class="com.ecom.data.entities.user.state"/>     <bean id="country" class="com.ecom.data.entities.user.country"/>     <bean id="pincodes" class="com.ecom.data.entities.user.pincodes"/>     <bean id="notification" class="com.ecom.data.entities.notification.notifications"/>     <bean id="notification_types" class="com.ecom.data.entities.notification.notification_types"/>     <bean id="transactions" class="com.ecom.data.entities.transaction.transactions"/>     <bean id="address" class="com.ecom.data.entities.user.address"/>     <bean id="user_master" class="com.ecom.data.entities.user.user_master"/>     <bean id="notification_channels" class="com.ecom.data.entities.notification.notification_channels"/>     <bean id="notification_time" class="com.ecom.data.entities.notification.notification_time"/>     <bean id="prefilled_response" class="com.ecom.data.entities.product.prefilled_response"/>     <bean id="payment_options" class="com.ecom.data.entities.transaction.payment_options"/>     <bean id="catagory" class="com.ecom.data.entities.product.catagory"/>     <bean id="vendor" class="com.ecom.data.entities.product.vendor"/>     <bean id="requester" class="com.ecom.data.entities.product.requester"/>     <bean id="requirement_type" class="com.ecom.data.entities.product.requirement_type"/>     <bean id="discount_offer_type" class="com.ecom.data.entities.product.discount_offer_type"/>     <bean id="discount_offers" class="com.ecom.data.entities.product.discount_offers"/>     <bean id="requirements" class="com.ecom.data.entities.product.requirements"/>     <bean id="product_catalog" class="com.ecom.data.entities.product.product_catalog"/>     <bean id="product_catalog_vendor" class="com.ecom.data.entities.product.product_catalog_vendor"/>     <bean id="product_vendor_payment_option_location" class="com.ecom.data.entities.product.product_vendor_payment_option_location"/>      <bean id="basedaoimpl" abstract="true"  class="basedao.basedaoimpl"> </bean>     <bean id="pincodedao" parent="basedaoimpl" class="com.ecom.data.access.user.pincodedao"> </bean>   </beans>      package com.ecom.data.access.user;  import junit.framework.assert;  import org.junit.beforeclass; import org.junit.test; import org.junit.runner.runwith; import org.springframework.test.context.contextconfiguration; import org.springframework.test.context.junit4.abstracttransactionaljunit4springcontexttests; import org.springframework.test.context.junit4.springjunit4classrunner;  import com.ecom.data.entities.user.pincodes;   @runwith(springjunit4classrunner.class) @contextconfiguration(locations = {"/applicationcontext-usermanagement-dao.xml",         "/applicationcontext-usermanagement-dao-test.xml" }) public class piccodetest extends abstracttransactionaljunit4springcontexttests {       @beforeclass     public static void setup(){}       @test     public void pincodetest(){          pincodedao pindao = new pincodedao();   // object of dao class call create method         pindao.save();      }  } ______________________________________________________________________ when run code junit maven gives error -------------------->  severe: caught exception while allowing testexecutionlistener [org.springframework.test.context.support.dependencyinjectiontestexecutionlistener@1f2edd2] prepare test instance [com.ecom.data.access.user.piccodetest@1dbb27d] org.springframework.beans.factory.beancreationexception: error creating bean name 'pincodedao' defined in class path resource [applicationcontext-usermanagement-dao.xml]: instantiation of bean failed; nested exception org.springframework.beans.beaninstantiationexception: not instantiate bean class [com.ecom.data.access.user.pincodedao]: constructor threw exception; nested exception java.lang.nullpointerexception     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.instantiatebean(abstractautowirecapablebeanfactory.java:1011)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.createbeaninstance(abstractautowirecapablebeanfactory.java:957)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.docreatebean(abstractautowirecapablebeanfactory.java:490)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.createbean(abstractautowirecapablebeanfactory.java:461)     @ org.springframework.beans.factory.support.abstractbeanfactory$1.getobject(abstractbeanfactory.java:295)     @ org.springframework.beans.factory.support.defaultsingletonbeanregistry.getsingleton(defaultsingletonbeanregistry.java:223)     @ org.springframework.beans.factory.support.abstractbeanfactory.dogetbean(abstractbeanfactory.java:292)     @ org.springframework.beans.factory.support.abstractbeanfactory.getbean(abstractbeanfactory.java:194)     @ org.springframework.beans.factory.support.defaultlistablebeanfactory.preinstantiatesingletons(defaultlistablebeanfactory.java:626)     @ org.springframework.context.support.abstractapplicationcontext.finishbeanfactoryinitialization(abstractapplicationcontext.java:932)     @ org.springframework.context.support.abstractapplicationcontext.refresh(abstractapplicationcontext.java:479)     @ org.springframework.test.context.support.abstractgenericcontextloader.loadcontext(abstractgenericcontextloader.java:96)     @ org.springframework.test.context.support.abstractgenericcontextloader.loadcontext(abstractgenericcontextloader.java:44)     @ org.springframework.test.context.testcontext.buildapplicationcontext(testcontext.java:198)     @ org.springframework.test.context.testcontext.getapplicationcontext(testcontext.java:233)     @ org.springframework.test.context.support.dependencyinjectiontestexecutionlistener.injectdependencies(dependencyinjectiontestexecutionlistener.java:126)     @ org.springframework.test.context.support.dependencyinjectiontestexecutionlistener.preparetestinstance(dependencyinjectiontestexecutionlistener.java:85)     @ org.springframework.test.context.testcontextmanager.preparetestinstance(testcontextmanager.java:231)     @ org.springframework.test.context.junit4.springjunit4classrunner.createtest(springjunit4classrunner.java:95)     @ org.springframework.test.context.junit4.springjunit4classrunner.invoketestmethod(springjunit4classrunner.java:139)     @ org.junit.internal.runners.junit4classrunner.runmethods(junit4classrunner.java:51)     @ org.junit.internal.runners.junit4classrunner$1.run(junit4classrunner.java:44)     @ org.junit.internal.runners.classroadie.rununprotected(classroadie.java:27)     @ org.junit.internal.runners.classroadie.runprotected(classroadie.java:37)     @ org.junit.internal.runners.junit4classrunner.run(junit4classrunner.java:42)     @ org.eclipse.jdt.internal.junit4.runner.junit4testreference.run(junit4testreference.java:50)     @ org.eclipse.jdt.internal.junit.runner.testexecution.run(testexecution.java:38)     @ org.eclipse.jdt.internal.junit.runner.remotetestrunner.runtests(remotetestrunner.java:467)     @ org.eclipse.jdt.internal.junit.runner.remotetestrunner.runtests(remotetestrunner.java:683)     @ org.eclipse.jdt.internal.junit.runner.remotetestrunner.run(remotetestrunner.java:390)     @ org.eclipse.jdt.internal.junit.runner.remotetestrunner.main(remotetestrunner.java:197) caused by: org.springframework.beans.beaninstantiationexception: not instantiate bean class [com.ecom.data.access.user.pincodedao]: constructor threw exception; nested exception java.lang.nullpointerexception     @ org.springframework.beans.beanutils.instantiateclass(beanutils.java:163)     @ org.springframework.beans.factory.support.simpleinstantiationstrategy.instantiate(simpleinstantiationstrategy.java:87)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.instantiatebean(abstractautowirecapablebeanfactory.java:1004)     ... 30 more caused by: java.lang.nullpointerexception     @ basedao.basedaoimpl.<init>(basedaoimpl.java:11)     @ com.ecom.data.access.user.pincodedao.<init>(pincodedao.java:7)     @ sun.reflect.nativeconstructoraccessorimpl.newinstance0(native method)     @ sun.reflect.nativeconstructoraccessorimpl.newinstance(nativeconstructoraccessorimpl.java:39)     @ sun.reflect.delegatingconstructoraccessorimpl.newinstance(delegatingconstructoraccessorimpl.java:27)     @ java.lang.reflect.constructor.newinstance(constructor.java:513)     @ org.springframework.beans.beanutils.instantiateclass(beanutils.java:148)     ... 32 more 

in code trying tu run entity have pincode entity getter setter , things want save data code in test scope

i using hibernate 4 spring 3 , maven 3

move session initialization below method

@postconstruct public void init(){       session = usermanagementsessionfactory.getcurrentsession(); }