User.java

// User.java - Base abstract class
package vhs;
// Updated: Adding new feature commits
import java.io.Serializable;

public abstract class User implements Serializable {
    private String id;
    private String name;
    private String email;
    private String password;
    private String role;

    // Default constructor (ADDED THIS)
    public User() {
        this("", "", "", "", "");
    }

    public User(String id, String name, String email, String password, String role) {
        this.id = id;
        this.name = name;
        this.email = email;
        this.password = password;
        this.role = role;
    }

    // Getters and Setters
    public String getId() { return id; }
    public void setId(String id) { this.id = id; }

    public String getName() { return name; }
    public void setName(String name) { this.name = name; }

    public String getEmail() { return email; }
    public void setEmail(String email) { this.email = email; }

    public String getPassword() { return password; }
    public void setPassword(String password) { this.password = password; }

    public String getRole() { return role; }
    public void setRole(String role) { this.role = role; }

    public abstract void displayInfo();

    @Override
    public String toString() {
        return "ID: " + id + ", Name: " + name + ", Role: " + role;
    }
}