Java tutorial
package org.springframework.security.oauth2.common.exceptions; /** * Exception thrown when a client was unable to authenticate. * * @author Ryan Heaton * @author Dave Syer */ @SuppressWarnings("serial") public class BadClientCredentialsException extends ClientAuthenticationException { public BadClientCredentialsException() { super("Bad client credentials"); // Don't reveal source of error } @Override public int getHttpErrorCode() { return 401; } @Override public String getOAuth2ErrorCode() { return "invalid_client"; } }