What is cyclomatic complexity checkstyle?

What is cyclomatic complexity checkstyle?

Description. Checks cyclomatic complexity against a specified limit. It is a measure of the minimum number of possible paths through the source and therefore the number of required tests, it is not a about quality of code! It is only applied to methods, c-tors, static initializers and instance initializers.

What is code smell in checkstyle tool?

Checkstyle is a well-known static code analysis tool, it can detect 4 code smells: Large Class, Long Method, Long Parameter List and Duplicated Code. Meanwhile the user of Checkstyle can operate XML file to modify parameters to detect code smell.

How can I improve my cyclomatic complexity?

Reducing Cyclomatic Complexity

1. Use small methods. Try reusing code wherever possible and create smaller methods which accomplish specific tasks.
2. Reduce if/else statements. Most often, we don’t need an else statement, as we can just use return inside the ‘if’ statement.

What does cyclomatic complexity tell us?

Cyclomatic complexity (CYC) is a software metric used to determine the complexity of a program. It is a count of the number of decisions in the source code. The higher the count, the more complex the code.

What is Maven checkstyle plugin?

The Checkstyle Plugin generates a report regarding the code style used by the developers. For more information about Checkstyle, see https://checkstyle.org/. This version of the plugin uses Checkstyle 8.29 by default and requires Java 8. But you can upgrade the version used at runtime.

What is fan complexity?

Class fan-out complexity: The number of other classes a given class relies on. Also the square of this has been shown to indicate the amount of maintenence required in functional programs (on a file basis) at least.

Why is it called code smell?

A code smell is a surface indication that usually corresponds to a deeper problem in the system. The term was first coined by Kent Beck while helping me with my Refactoring book.

What is data refactoring?

A database refactoring is a simple change to a database schema that improves its design while retaining both its behavioral and informational semantics. Database refactoring does not change the way data is interpreted or used and does not fix bugs or add new functionality.

How can we reduce time complexity?

To reduce time complexity you need to optimize your algorithm. It will most often come as a result of using proper data structure or algorithm. So you will need to learn data structures and algorithms for being able to perform well.

How can I reduce my complexity?

How To Reduce Complexity In Seven Simple Steps

1. Clear the underbrush.
2. Take an outside-in perspective.
3. Prioritize, prioritize, prioritize.
4. Take the shortest path from here to there.
5. Stop being so nice.
6. Reduce levels and increase spans.
7. Don’t let the weeds grow back.

How can we reduce the complexity of switch case?

Avoid use of switch/case statements in your code. Use Factory or Strategy design patterns instead. Complexity of 8 (1 for each CASE and 1 for method itself). Refactoring using Factory design pattern and complexity changed to 1.

How is complexity of code calculated?

You compute it by using the control flow graph of the program. Cyclomatic complexity measures the number of nested conditions within the code, such as those created by for, if/else, switch, while, and until. The greater the number of conditions (as in example b from above), the greater the complexity.

What is cyclomatic complexity?

Cyclomatic complexity is a software metric, used to indicate the complexity of a program. It is a quantitative measure of the number of linearly independent paths through a program’s source code. It was developed by Thomas J. McCabe, Sr. in 1976.

What is Checkstyle and how to use it?

This article needs to be updated. Checkstyle is a static code analysis tool used in software development for checking if Java source code complies with coding rules . Originally developed by Oliver Burn back in 2001, the project is maintained by a team of developers from around the world.

How do I use the SuppressWarnings filter in Checkstyle?

The SuppressWarnings filter has to be enabled in the Checkstyle settings (see “TreeWalker” in the example settings below). In the tag for the SuppressWarnings annotation you have to use the name of the checkstyle module in all lower case. Optionally a prefix “checkstyle:” can be used in the tag.

How to use the module name in the Checkstyle filter?

The checkstyle filter Filters=>Suppression Comment Filter uses the module name as it is specified in the xml file. If you use the prefix “checkstyle:”, the module name can also be used in lower case. .