The Customer Class

Listing 9.1 (Customer.java)

import java.io.*;

public class Customer 
	implements Serializable{
	
	//instance variables
	private String name;
	private int age;
	private String item;
	
	//constructor
	public Customer(String name,int age, String item){
		this.name = name;
		this.age = age;
		this.item = item;
	}
	
	//method used to set name
	public void setName(String name){
		this.name = name;
	}
	
	//method used to set age
	public void setAge(int age){
		this.age = age;
	}
	
	//method used to set Item
	public void setItem(String item){
		this.item = item;
	}
	
	//method used to get name
	public String getName(){
		return name;
	}

	//method used to get age
	public int getAge(){
		return age;
	}

	//method used to get Item
	public String getItem(){
		return item;
	}
}

Explanation

Objects of Customer class will be passed across a network. The class is not remote, so its methods can not be invoked remotely. Note that the Customer class implements the Serializable interface. Therefore, objects of this class can be transported from one machine to another but the receiving machine will get the copy of the actual object.

The Constructor of the class takes three arguments:

Name of the customer.
Age of the customer.
Item bought by the customer.

Further, the class provides some accessor and mutator methods.