Static code analysis tools like Checkstyle and SonarQube. If you've ever wanted to experiment with a new IDE, it's worth dedicating a bit of time to download and install Visual Studio Code for Java.

We may not see perfect source code in our lifetime, but we are seeing much better analysis tools and promising new approaches to remedy the problem.

This utility also shows the coding violation messages as well as the location of violated source code as output. Consider a simple Java class that overrides the equals () method of the Object class.