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import java.util.ArrayList;
import java.util.List;
// Functional Cohesion Example
class UserAuthentication {
private String username;
private String password;
public UserAuthentication(String username, String password) {
this.username = username;
this.password = password;
}
public String hashPassword() {
// Hash the password
return "hashed_" + password;
}
public boolean checkPasswordStrength() {
// Check if the password meets security requirements
return password.length() >= 8;
}
public boolean authenticate() {
// Authenticate the user
return username != null && password != null;
}
}
// Sequential Cohesion Example
class OrderProcessor {
public Order processOrder(Order order) {
Order validatedOrder = validateOrder(order);
Order calculatedOrder = calculateTotal(validatedOrder);
return submitOrder(calculatedOrder);
}
private Order validateOrder(Order order) {
// Validate the order
order.setValid(true);
return order;
}
private Order calculateTotal(Order order) {
// Calculate the total price
order.setTotal(100.0); // Dummy calculation
return order;
}
private Order submitOrder(Order order) {
// Submit the order to the system
order.setSubmitted(true);
return order;
}
}
// Communicational Cohesion Example
class UserManager {
private User userData;
public UserManager(User userData) {
this.userData = userData;
}
public boolean validateUser() {
// Validate user data
return userData.getName() != null && userData.getEmail() != null;
}
public void saveUser() {
// Save user to database
System.out.println("User saved: " + userData.getName());
}
public void sendWelcomeEmail() {
// Send welcome email to user
System.out.println("Welcome email sent to: " + userData.getEmail());
}
}
// Helper classes for the examples
class Order {
private boolean isValid;
private double total;
private boolean isSubmitted;
public void setValid(boolean valid) { this.isValid = valid; }
public void setTotal(double total) { this.total = total; }
public void setSubmitted(boolean submitted) { this.isSubmitted = submitted; }
}
class User {
private String name;
private String email;
public User(String name, String email) {
this.name = name;
this.email = email;
}
public String getName() { return name; }
public String getEmail() { return email; }
}
public class CohesionExamples {
public static void main(String[] args) {
// Functional Cohesion
UserAuthentication auth = new UserAuthentication("user1", "password123");
System.out.println("Password hashed: " + auth.hashPassword());
System.out.println("Password strength: " + auth.checkPasswordStrength());
System.out.println("User authenticated: " + auth.authenticate());
// Sequential Cohesion
OrderProcessor processor = new OrderProcessor();
Order order = new Order();
Order processedOrder = processor.processOrder(order);
System.out.println("Order processed successfully.");
// Communicational Cohesion
User user = new User("John Doe", "[email protected]");
UserManager userManager = new UserManager(user);
System.out.println("User valid: " + userManager.validateUser());
userManager.saveUser();
userManager.sendWelcomeEmail();
System.out.println("Cohesion examples created successfully.");
}
}
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