Spring Bean Example

This application is the example of been collaboration that means one bean injecting the information of other beans
Book.java

package s2;

public class Book
{
    private  int bid;
	private String bname;
	private double price;
	public Book(){}
	public Book(int bid,String bname,double price)
	{
		this.bid=bid;
		this.bname=bname;
		this.price=price;
	}
	public String toString()
	{
		return bid+"  "+bname+"  "+price;
	}
	public void setBid(int n){  bid=n; }
	public int getBid(){ return bid; }
	public void setBname(String s){ bname=s; }
	public String getBname(){ return bname; }
	public void setPrice(double d){ price=d; }
	public double getPrice(){ return price; }
}

package s2;

public class Book

{

private int bid;

private String bname;

private double price;

public Book(){}

public Book(int bid,String bname,double price)

{

this.bid=bid;

this.bname=bname;

this.price=price;

}

public String toString()

{

return bid+" "+bname+" "+price;

}

public void setBid(int n){ bid=n; }

public int getBid(){ return bid; }

public void setBname(String s){ bname=s; }

public String getBname(){ return bname; }

public void setPrice(double d){ price=d; }

public double getPrice(){ return price; }

}

This is normal pojo class

BookInter.java

package s2;

import java.util.*;
public interface  BookInter  
{
        public Book getBook(int id);
        public List getBooks();
}
This is normal interface which contain only abstract methods
	3	BookInterImpl.java
package s2;

import java.util.*;
public class BookInterImpl  implements  BookInter
{
           private List  books=new ArrayList();
           public BookInterImpl()
           {
	books.add(new Book(1001,"java",560));
	books.add(new Book(1002,"oracle",450));
	books.add(new Book(1003,"j2ee",700));
	books.add(new Book(1004,"j2me",1560));
            }
           public Book getBook(int id)
           {
	      Iterator i1=books.iterator();
	       while(i1.hasNext())
	       {
		Book b=(Book)i1.next();
		if(b.getBid() == id)
		      return b;
	        }
	       return null;
	         
            }
             public List  getBooks()
             {
	return books;
              }
           
}

package s2;

import java.util.*;

public interface BookInter

{

public Book getBook(int id);

public List getBooks();

}

This is normal interface which contain only abstract methods

3 BookInterImpl.java

package s2;

import java.util.*;

public class BookInterImpl implements BookInter

{

private List books=new ArrayList();

public BookInterImpl()

{

books.add(new Book(1001,"java",560));

books.add(new Book(1002,"oracle",450));

books.add(new Book(1003,"j2ee",700));

books.add(new Book(1004,"j2me",1560));

}

public Book getBook(int id)

{

Iterator i1=books.iterator();

while(i1.hasNext())

{

Book b=(Book)i1.next();

if(b.getBid() == id)

return b;

}

return null;

}

public List getBooks()

{

return books;

}

this is implementation details class file

CommandLineView.java

package s2;

import java.util.*;
public class  CommandLineView
{
	BookInter  binter;
	public void setBinter(BookInter  b1)
	{
		binter=b1;
	}
           
             public void printBook(int id)
             {	           System.out.println("PARTICULAR BOOK INFORMATION :"+id);
	           System.out.println(binter.getBook(id));
             }
            public void printAllBooks()
            {
		System.out.println("ALL BOOKS INFORMATION..");
		List  books=binter.getBooks();
		Iterator  i1=books.iterator();
		while(i1.hasNext())
		{
			Book b=(Book)i1.next();
			System.out.println(b);
		}		
              }
}

package s2;

import java.util.*;

public class CommandLineView

{

BookInter binter;

public void setBinter(BookInter b1)

{

binter=b1;

}

public void printBook(int id)

{ System.out.println("PARTICULAR BOOK INFORMATION :"+id);

System.out.println(binter.getBook(id));

}

public void printAllBooks()

{

System.out.println("ALL BOOKS INFORMATION..");

List books=binter.getBooks();

Iterator i1=books.iterator();

while(i1.hasNext())

{

Book b=(Book)i1.next();

System.out.println(b);

}

this class displaying the out put.

book.xml

<!--?xml version="1.0" encoding="UTF-8"?--> 
 
<beans>
     <bean id="b1" class="s2.BookInterImpl">
     </bean>
     <bean id="c1" class="s2.CommandLineView">
	<property name="binter">
		<ref bean="b1">
	</ref></property>
      </bean>
</beans>
This xml file is spring configuration file store all beans
	5	ClientApp.java
package s2;

import org.springframework.core.io.*;
import org.springframework.beans.factory.*;
import org.springframework.beans.factory.xml.*;
public class ClientApp
{
       public static void main(String args[])
       {
	  Resource  res=new ClassPathResource("s2/Book.xml");
	  BeanFactory factory=new XmlBeanFactory(res);
	   CommandLineView  clv=(CommandLineView)factory.getBean("c1");
	  clv.printBook(1002);
	  clv.printAllBooks();
       }
}

<beans>

</bean>

</ref></property>

</bean>

</beans>

This xml file is spring configuration file store all beans

5 ClientApp.java

package s2;

import org.springframework.core.io.*;

import org.springframework.beans.factory.*;

import org.springframework.beans.factory.xml.*;

public class ClientApp

{

public static void main(String args[])

{

Resource res=new ClassPathResource("s2/Book.xml");

BeanFactory factory=new XmlBeanFactory(res);

CommandLineView clv=(CommandLineView)factory.getBean("c1");

clv.printBook(1002);

clv.printAllBooks();

}

This is client application of all application

Output

PARTICULAR BOOK INFORMATION :1002
1002  oracle  450.0
ALL BOOKS INFORMATION..
1001  java  560.0
1002  oracle  450.0
1003  j2ee  700.0
1004  j2me  1560.0

PARTICULAR BOOK INFORMATION :1002

1002 oracle 450.0

ALL BOOKS INFORMATION..

1001 java 560.0

1002 oracle 450.0

1003 j2ee 700.0

1004 j2me 1560.0