Core Java

HttpURLConnection is subclass of URLConnection with support for HTTP-specific features, for example: open a connection, retrieve message and post data to server.

1.1 java coding standards and best practices Module Organization The term module in this context refers to a source file. A source file should contain

 Java coding style to help ensure a uniformly high source code quality, so we always need to review our code keep readable, understandable.

Why Use Multiple Threads? In many situations, having more than one thread running in a program is beneficial. Here’s a more in-depth look at why this can be good.

Operation Coding Time-consuming(ms) Local variable Assigning i=n; 1.0 Instance Assigning this.i=n; 1.2 int increasing i++; 1.5 byte increasing b++;

If using  methods stop/suspend to stop a thread, this is unsafe and thus deprecated. If a thread being stopped now is modifying common data, that common

When a modern operating system wants to start running a program, it creates a new process. A process is a program that is currently executing.

As a developer, we have to ensure that our codes are high-quality, fully tested and peer-reviewed before delivering. Today the topic is how to mock java

I have summarized some common java interview questions and answers as showed below, you may take a look if you are preparing an interview: 1, what’s  the

The goal of unit testing is to test the code behaved as exactly expected and smallest piece of testable software as possible, the approach to do so is