The Google Maps Platform is a set of APIs and SDKs that allows developers to embed Google Maps into mobile apps and web pages, so today let’s have a try, get first step to learn about it.

Code Challenge — Write a program Write a class named AsciiCharSequence that implements compact storage of ASCII-character sequences.

Code Challenge — Write a program You are given an interface named AccountService.

Code Challenge — Write a program Suppose, you are writing a geometric engine.

Building Apps in business level

In this learning note, we’ll learn what the new Fetch API looks like, what problems it solves, and the most practical way to retrieve remote data inside your web page using the fetch() function

Fetch Api learning 1 (easy)

Fetch API API a computing interface, as a newbie I get confused about it a lot, like how to fetch data from a website.

认识 JDBC

This is my learning note about how Spring core features like IoC, AOP works, with Code Examples .