java.lang.NoSuchMethodException: userAuth.User.<init>()
hibernate-validator, java, spring, validation
Solution
The message `java.lang.NoSuchMethodException: userAuth.User.<init>()` means that someone tried to call a constructor without any parameters. Adding a default constructor should solve this problem:
public class User {
public User() {
}
..
}
Problem
I have the class with validation: ``` public class User { @Size(min=3, max=20, message="User name must be between 3 and 20 characters long") @Pattern(regexp="^[a-zA-Z0-9]+$", message="User name must be alphanumeric with no spaces") private String name; @Size(min=6, max=20, message="Password must be between 6 and 20 characters long") @Pattern(regexp="^(?=.*[0-9])(?=.*[a-zA-Z])([a-zA-Z0-9]+)$", message="Password must contains at least one number") private String password; public User(String _name, String _password){ super(); name = _name; password = _password; } public String getName(){ return name; } public String getPassword(){ return password; } public void setPassword(String newPassword){ password = newPassword; } } ``` when I validate values, I got the message: ``` SEVERE: Servlet.service() for servlet osAppServlet threw exception java.lang.NoSuchMethodException: userAuth.User.<init>() ``` where is the problem?