Java Best Practices

Java1. Use logging. Never use system.out.print(). For long-running programs, you’ll need to look at the log files to check that the program

2023-02-21

My Rules for Software Development

1. Use a new git branch to develop new features. After finishing a new feature, switch to the main branch. It’s much clearer when you’re doi

2023-02-20

[IntelliJ IDEA] Solved Cannot resolve symbol

The problem “Cannot resolve symbol” means IDEA hasn’t successfully indexed your project code and dependent libraries. There are two common p

2023-02-20

Find HTML DOM Elements in JavaScript

In this post, we will introduce several ways to find HTML DOM elements in JavaScript. querySelector methodsDocument or Element methods query

2023-02-15

Understanding Docker: Introduction

In this post, we will introduce the basic concepts of Docker. You’ll learn what docker is, why and when to use it. What is DockerDocker is a

2023-01-30

Communication between Components in React

Pass data between a parent and a child componentPass data from parent component to its childUse props Parent.js 1<Child name={childN

2023-01-13

The Way I Write Clean Code

DesignCreating good architecture design. Creating good database design. Creating good API design. Unit testWrite unit tests or test-drive de

2023-01-05

Elasticsearch Partial Search

match and match_phrase do not work for partial searches. We can use wildcard, query_string or regexp to match a partial string. For example,

2022-12-30

How to Read The Shit-Mountain Code

What does the shit code look likeBad names for variables and functions. And there are a lot of literals. Bad data structures and database sc

2022-12-30

Python Basics

Getting StartedHello World 12> print("Hello World")Hello World Get input data from console 1input_string_var = input("Ent

2022-11-24