Question

How can I implement basic input validation in Java to prevent common web vulnerabilities

Answer 1

In Java, you can use regular expressions to validate user input, making sure the data is in the expected format.

Here’s an example for email validation:

What’s happening:

• email.matches(): This checks if the email matches the pattern of a valid email.
• If the email doesn’t match, you throw an exception or return an error.

This kind of validation helps prevent attacks like SQL injection or XSS by ensuring only proper data gets processed.