Inheritance in Spring

This is 11 of 16 parts of spring tutorial series: Inheritance in Spring.

Tutorial Content: Spring tutorial for beginners

• Introduction to spring framework
• Spring interview questions
• Dependency injection(ioc) in spring
• Spring XML based configuration example
• Spring java based configuaration
• Dependency injection via setter method in spring
• Dependency injection via constructor in spring
• Spring Bean scopes with examples
• Initializing collections in spring
• Beans Autowiring in spring
• Inheritance in Spring
• Spring ApplicationContext
• Spring lifetime callbacks
• BeanPostProcessors in Spring
• Annotation based Configuration in spring
• Spring AOP tutorial

In spring,inheritance is supported for reusing already written bean,so that beans can share common attributes and methods among them.

child bean will have all attributes and methods of parent bean,also child bean can override parent bean’s attributes or methods.

For configuring spring in your eclipse ide please refer  hello world example

Inheritance in Spring example

1.Person.java

package org.arpit.javapostsforlearning;

public class Person {

    String name;

    public String getName() {
        return name;
    }

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

}

package org.arpit.javapostsforlearning;

public class Employee extends Person{

    int employeeNumber;

    public int getEmployeeNumber() {
        return employeeNumber;
    }

    public void setEmployeeNumber(int employeeNumber) {
        this.employeeNumber = employeeNumber;
    }

}

package org.arpit.javapostsforlearning;

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

public class InheritenceInSpringMain {

    public static void main(String[] args) {
        ApplicationContext appContext = new ClassPathXmlApplicationContext("ApplicationContext.xml");
        Employee emp=(Employee) appContext.getBean("employeeBean");
        System.out.println("Employee name:"+emp.getName());
        System.out.println("Employee number:"+emp.getEmployeeNumber());
    }
}

5.Run it

Employee name:Arpit
Employee number:178230

That’s all about Inheritance in Spring.
In next post,we will see spring applicationContext.