What is a JEP in Java?

Well. My company standard it's openJDK 8 since 2019... Cheers!

juanrios.com@localhost

thank you, I finally realize that Java 8 is the most popular version.

Evgeny Ivanov

Alexander Joseph

A discussion surrounding the different versions of Java including the difference between SE and EE as well as key features of Java 7, 8, and 9.

Which Version of Java Should You Use?

How much do software engineers make?

What is Kafka Consumer Group ID?

How do you create an index in MongoDB?

A Spring Boot example using the KafkaListener annotation including annotation properties, KafkaListenerContainerFactory and Default KafkaConsumerFactory explained.

@KafkaListener | Spring Boot Example

One to One Example using Spring Data JPA and Hibernate including shared primary key, unidirectional, and bidirectional examples.

One To One Example | Spring Data JPA

This can happen for several reasons.  Not to be mean but the error clearly states the obvious here.  The problem is most Java developers don't learn about the class loading mechanism..

This class loading mechanism is "automagically" used by the JRE to identify unique classes and load them into memory.

The JRE utilizes a native operation to load bootstrapped classes.  It then uses <span class='code-bite'>ClassLoader</span> to locate and cache classes as they are dynamically used by the application.

So you probably aren't naming your class right or using the wrong extension, because Java just plain and simple can't find the class...

I am getting following error using IntellJ IDE...

Error: Could not find or load main class AddressCalc

Caused by: java.lang.NoClassDefFoundError: AddressCalc (wrong name: AddressCal)

Java could not find or load main class?

GC is an automatic mechanism that will collect unused objects and free up the memory space used for these objects.

GC is done automatically.  There is nothing you do as a developer to trigger this process

How does garbage collection work?

thanks for the great explanation on ngOnChanges.  really appreciate the ngOnChanges example...why can't the official documentation explain this as clearly???

Another question I have is how these lifecycle hooks (in general) compare to React and other frameworks.  From what I've heard, ReactJs is still king in terms of their diffing algo and performance.  

i think the way Angular handles change events is much simpler than ReactJS.  While these ngonchange examples may seem a bit overboard for JavaScript, it's still easier to understand these life cycle hooks than functional components in React (in my opinion).

Does anyone know what is more performant when it comes to things like React hooks (useEffect, useState) etc and things like ngOnChanges???

Steve Jennings

People often get confused when they see ngOnChanges fire before ngOnInit. At a high level you would assume ngOnInit is the first thing called when a component is rendered.

This post does a good job of emphasizing the fact that ngOnChanges is linked to children components and their bound @Input properties.  When you initialize a child component from a parent, you are setting the component's @Input properties as part of the component's initialization....

A child component's @Input properties are updated even before the component is initialized...

hoopmiester

ngOnChanges example for Angular including latest version example with explanation

ngOnChanges Example | Angular

What is a good salary for a software engineer

What is a good salary for a software engineer?

this took longer than 5 minutes for me to understand but wow ...great explanation.

The Promise is still relevant and great for async operations where you are only concerned with the result of one async operation.  While the observable handles this well with Angular, it's still perfectly reasonable to use the Promise library for http requests, etc.

stackchief

Quickly understand JavaScript observables.  Implement the Observable class from scratch and understand what makes observables different from promises.

Brenda Becker

What is a JEP in Java?

Which Version of Java Should You Use?

How much do software engineers make?

What is Kafka Consumer Group ID?

Which Version of Java Should You Use?

How do you create an index in MongoDB?

@KafkaListener | Spring Boot Example

One To One Example | Spring Data JPA

Java could not find or load main class?

How does garbage collection work?

ngOnChanges Example | Angular

What is a good salary for a software engineer?

JavaScript Observables in 5 Minutes

Brenda Becker

What is a JEP in Java?

Which Version of Java Should You Use?

How much do software engineers make?

What is Kafka Consumer Group ID?

Which Version of Java Should You Use?

How do you create an index in MongoDB?

@KafkaListener | Spring Boot Example

One To One Example | Spring Data JPA

Java could not find or load main class?

How does garbage collection work?

ngOnChanges Example | Angular

What is a good salary for a software engineer?

JavaScript Observables in 5 Minutes

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