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How to create Annotated Beans in Spring using @Component and component-scan tag?
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Below is an example of "How to create Annotated Beans in Spring using @Component and component-scan tag?"
Step.1 Start a Java Project with required jars 
  1. Open Eclipse
  2. Click on menu New -> Others
  3. In wizards type "Java Project" and Select "Java Project"
  4. Click Next
  5. Enter project name as "JavaBasedBeanUsingComponent", then click Next
  6. Goto Libraries tab, then click on Add External JARs, then select Spring's 21 Framework Jars and commons-logging-1.1.jar.
  7. Click Finish.
Step.2 Project Explorer Preview 
RunMyProgram.java
package com.springexample;

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

public class RunMyProgram {
	public static void main(String[] args) {
		ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
		Student student = (Student) context.getBean("student");
		student.displayStudentDetails();
	}
}
beans.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:component-scan base-package="com.springexample" />
</beans>
Student.java
package com.springexample;

import org.springframework.stereotype.Component;

@Component
public class Student {
	private int studentNo;
	private String studentName;
	
	public Student(){
		this.studentNo = 1;
		this.studentName = "John Peter";
	}
	
	public int getStudentNo() {
		return studentNo;
	}
	public void setStudentNo(int studentNo) {
		this.studentNo = studentNo;
	}
	public String getStudentName() {
		return studentName;
	}
	public void setStudentName(String studentName) {
		this.studentName = studentName;
	}	
	
	public void displayStudentDetails(){
		System.out.println("Student Details");
		System.out.println("---------------");
		System.out.println(studentNo);
		System.out.println(studentName);
	}
}
Output 
Student Details
---------------
1
John Peter
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