JWTAuthenticationFilter.java

package com.auth0.samples.authapi.security;

// imports ...

public class JWTAuthenticationFilter extends UsernamePasswordAuthenticationFilter {
	private AuthenticationManager authenticationManager;

	public JWTAuthenticationFilter(AuthenticationManager authenticationManager) {
		this.authenticationManager = authenticationManager;
		setFilterProcessesUrl("/api/login");
	}

  // everything else remains untouched
}