When configuring beans in configuration file, set the "autowire-candidate" attribute of the bean element in .xml file to false, by doing this the container will exclude that specific bean from auto-wiring.

By using the below example we can easily show that how we can exclude the Department bean from Employee bean the value of that Object is null.

Ex:- Employee.java

package com.babita;

    import org.springframework.beans.factory.annotation.Autowired;
    import javax.annotation.Resource;

    public class Employee {

    private int id;
    private String name;
    private Department department;

    public void setDepartment(Department department) {
        this.department = department;
    }

    public Department getDepartment() {
        return department;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString(){
    return"Employee[id="
    +id+",Department="
    +department+",name="+name+"]";
    }
}

Department.java

package com.babita;
public class Department {

    private String name;
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
    return"Student[name="+name+"]";
    }

}

Now set the "autowire-candidate" to false in app-context.xml file:

app-context.xml

<?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"
    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">

   <context:annotation-config/>

    <bean id="dep" class="com.babita.Department" >
           <property name="name" value="java"></property>
   </bean>

   <bean id="emp" class="com.babita.Employee" autowire-candidate="false">
           <property name="name" value="babita"></property>
           <property name="id" value="001"></property>
   </bean>


</beans>

Now Define the main class where you can see the output:

App.java

package com.app;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.babita.Department;
import com.babita.Employee;
import com.manish.Course;
import com.manish.Student;

public class App {
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ApplicationContext ctx=new ClassPathXmlApplicationContext(new String[]{"app-context.xml"});
        Employee emp=(Employee)ctx.getBean("emp");
        System.out.println(emp);
    }
}

Hope this will help you :)