How to Implement Forgot Password Functionality in Java

What are the steps to implement forgot password functionality in a Java application?

public void sendPasswordResetEmail(String email) {
    String token = generateResetToken();
    // Logic to send email with the reset link
    String resetLink = "https://example.com/reset-password?token=" + token;
    emailService.sendEmail(email, resetLink);
}

Implementing a 'forgot password' feature in a Java application is crucial for user account recovery and helps improve user experience. This functionality typically involves generating a unique reset token, sending it to the user's registered email, and allowing users to set a new password safely.

private String generateResetToken() {
    String token = UUID.randomUUID().toString();
    // Store token in the database with an expiration date
    return token;
}

Causes

• User forgets their password and cannot log in.
• Security protocols require a legitimate way to reset sensitive information.

Solutions

• Create a password reset form on your Java web application.
• Utilize JavaMail API to send reset link emails.
• Store reset tokens securely with an expiration time.

Mistake: Not validating the user's email address before sending a reset link.

Solution: Always check if the email exists in your database to prevent information leakage.

Mistake: Failing to set expiration for tokens, leaving them valid indefinitely.

Solution: Set a short expiration time (e.g., 15-30 minutes) for the reset tokens.