第十二周
本周任务如下:
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完成Person Class作业
Person Class
An instance variable can be assigned an initial value in its declaration, just like any other variable. For example, consider a class named Person. An object of this class will represent a person. It will contain three instance variables to represent its name, email and phone number:
public class Person
{
// instance variables
private String name;
private String email;
private String phoneNumber;
// constructor: construct a Person copying in the data into the instance
// variables
public Person(String initName, String initEmail, String initPhone)
{
name = initName;
email = initEmail;
phoneNumber = initPhone;
}
// Print all the data for a person
public void print()
{
System.out.println("Name: " + name);
System.out.println("Email: " + email);
System.out.println("Phone Number: " + phoneNumber);
}
//To be implement in Exercise 1
public boolean isValidEmail() {
return false;
}
}
Exercise1: Validate person's email
The '@' symbol is a crucial component of the syntax for email addresses. According to the standard format,
email address consists of two main parts: a local part and a domain part. These two parts are separated by the '@' symbol. For example, in the email address "example@example.com", "example" is the local part, and "example.com" is the domain part.
Your task is to add a method isValidEmail() to this class that checks if the person's email contains the '@' . This method should return true
if the email contains '@', and false
otherwise.
The method signature should be:
public boolean isValidEmail()
Exercise 2: Test your Person Class.
Create a driver class. Paste the code here. Create the following two Person Objects in the driver class.
public class Main {
public static void main(String[] args)
{
// call the constructor to create a new person
Person p1 = new Person("Sana", "sana@gmail.com", "123-456-7890");
// call p1's print method
p1.print();
Person p2 = new Person("Jean", "jean@gmail.com", "404 899-9955");
p2.print();
Person p3 = new Person("X", "xyz", "xxx");
System.out.println(p1.isValidEmail());
System.out.println(p3.isValidEmail());
}
}
Click test, then you can see the result.
When you are ready, submit your code.
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