Java program on Custom Exceptions, Email application example
PROGRAM: import java.util.Scanner; public class EmailApplication { public static void main(String[] args) { String username, password; Scanner sc = new Scanner(System.in); System.out.println("Enter username and password to create account"); System.out.print("Username: "); username = sc.next(); System.out.print("Password: "); password = sc.next(); Account acc = new Account(username, password); System.out.println("Account created successfully!"); acc.login(); } } class Account { String username, password; public Account(String username, S...