Error Detection & Handling

Vocabulary flashcards covering key terms and definitions related to Error Detection & Handling in application backends.

Exception Handling

A mechanism to respond to exceptions that occur within a program.

HttpRequestMethodNotSupportedException

An exception thrown when an HTTP method is not supported.

MethodArgumentNotValidException

An exception thrown when method arguments are not valid.

NoResourceFoundException

An exception thrown indicating that a resource was not found.

@ControllerAdvice

A specialization of the @Component annotation that allows you to handle exceptions globally.

@ExceptionHandler

An annotation that defines methods for handling exceptions thrown by request handling methods.

Global Exception Handler

A single class responsible for handling exceptions across all controllers.

Input Validation

The process of ensuring that inputs to a program meet specified requirements.

Annotations

Special markers in code that provide metadata about the class/method/variable.

@NotNull

An annotation indicating that a variable must not be null.

@Min

An annotation that specifies the minimum value for a numeric field.

Log4J2

A logging framework used for creating and managing log files.

Log Levels

Categories that describe the severity or nature of log messages.

INFO

A log level used to indicate regular operational messages.

ERROR

A log level indicating that an error has occurred.

FATAL

A log level indicating a very severe error that will lead to application termination.

DEBUG

A log level useful for debugging; more detailed than INFO.

TRACE

A log level that provides the most detailed logging, often indicating entry/exit points.

Logging Framework

A library that provides tools for logging messages in an application.

@Valid

An annotation indicating that a method parameter should be validated.

MethodArgumentNotValidException

Thrown when a method argument fails validation.

User-Defined Exceptions

Custom exceptions defined by the user to handle specific error scenarios.

Constraint Violations

Occurrences when input does not meet the defined constraints.

@Positive

An annotation that specifies a numeric field must be positive.

@Size

An annotation that specifies the size constraints on a collection or string.

@Pattern

An annotation that validates a string against a specific regular expression pattern.

OCSP

[Test Term] A reference term related to the administrative body responsible for logged content.