#exception

GRGanesh Rama Hegdekotlinflow.hashnode.dev

Chapter 21 : UseCase18 - Exception Handling in Flow

Flow gives us structured exception handling. Business Scenario We will: Process stocks Throw an artificial exception for demonstration Handle it safely using catch Continue flow gracefully Code Implementation package org.kotlinflowlearner.stock...

Feb 163 min read

TTuanhdotnettuanhnet.hashnode.dev

Series of Interview Questions for Backend Developers Part 4

Source: Series of Interview Questions for Backend Developers Part 4 1. Question 1: What types of Java class loaders exist and how do they work? At a high level, a class loader is just a piece of Java code whose job is to take a .class file (or...

Feb 517 min read

ARAshifur Rahamanaspnetcore.hashnode.dev

ASP.NET Core: Exception Filter

Exception Filters (IExceptionFilter, IAsyncExceptionFilter) are a specialized type of MVC filter designed to catch unhandled exceptions that occur strictly during the execution of a Controller Action or its Action Filters. Unlike global middleware (w...

Jan 106 min read

TTuanhdotnettuanhnet.hashnode.dev

Reasons Your API Returns 403 With a Valid Token — and How to Fix Missing Role Mapping

Source: Reasons Your API Returns 403 With a Valid Token — and How to Fix Missing Role Mapping 1. What “Valid Token but 403” Actually Means When Spring Security (or any resource server) returns 403 with a verified token, it’s saying: “I believe...

Dec 31, 20259 min read

TTuanhdotnettuanhnet.hashnode.dev

Techniques to Configure server.servlet.context-path and Log 404 Errors Separately in Spring Boot

Source: Techniques to Configure server.servlet.context-path and Log 404 Errors Separately in Spring Boot 1. Understanding server/servlet/context-path 1.1 What is a Context Path? In Spring Boot, the context path defines the base URI under ...

Dec 11, 20255 min read

ADAú Desvianteaudesviante.hashnode.dev

Arrays exceptions

Diferentes tipos de exceções podem surgir ao processar um array. Para evitá-las, você deve estar ciente das situações mais comuns e seguir um conjunto de boas práticas. NullPointerException O Array é um tipo de referência, isso significa, entre outra...

Oct 22, 20253 min read

BRBrett Rowberrybrettrowberry.com

Clojure +, +', and unchecked-add

+ In Clojure core there’s a handy function, +. I’ll bet you know what it does: (+ 1 2 3) ;;=> 6 Let’s introduce a handy function as we explore: (defn value-and-type [& args] (map (juxt identity type) args)) Let’s look at the largest supported L...

Oct 9, 20251 min read

TTuanhdotnettuanhnet.hashnode.dev

You’re Facing IllegalStateException in JUnit with Spring Boot and How to Resolve It

Source: You’re Facing IllegalStateException in JUnit with Spring Boot and How to Resolve It 1. What is IllegalStateException in JUnit with Spring Boot? IllegalStateException is a runtime exception that occurs when the application is in an inap...

Sep 10, 20254 min read

TTuanhdotnettuanhnet.hashnode.dev

Methods to Create and Handle Custom Exceptions in UserDetailsService of Spring Security

Source: Methods to Create and Handle Custom Exceptions in UserDetailsService of Spring Security 1. The Role of Exceptions in UserDetailsService The UserDetailsService interface has one primary method: UserDetails loadUserByUsername(String us...

Aug 20, 20254 min read

TTuanhdotnettuanhnet.hashnode.dev

Reasons Why You Encounter 'Column Cannot Be Null' in Hibernate with OneToMany and How to Resolve It

Source: Reasons Why You Encounter 'Column Cannot Be Null' in Hibernate with OneToMany and How to Resolve It 1. What Causes the 'Column Cannot Be Null' Error? The error occurs when Hibernate attempts to persist an entity that violates a databas...

Aug 17, 20254 min read

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Chapter 21 : UseCase18 - Exception Handling in Flow