What is JavaNCSS?

What is JavaNCSS?

JavaNCSS is a simple command line utility which measures two standard source code metrics for the Java programming language. The metrics are collected globally, for each class and/or for each function. Here is an example about what JavaNCSS prints out for the Sun JDK 1.1. 5 java. * source tree.

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 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.

What is class data abstraction coupling?

Generally speaking, any data type with other data types as members or local variable that is an instantiation (object) of another class has data abstraction coupling (DAC). The higher the DAC, the more complex the structure of the class. Iterates over the list of tokens (defined below) and counts all mentioned classes.

What is NCSS line count?

This rule uses the NCSS (Non Commenting Source Statements) algorithm to determine the number of lines of code for a given method. NCSS ignores comments, and counts actual statements. Using this algorithm, lines of code that are split are counted as one.

How do I stop checkstyle warnings?

It is possible to suppress all the checkstyle warnings with the argument “all” : @SuppressWarnings(“all”) public void someFunctionWithInvalidStyle() { //… }

Is there a cyclomatic complexity of 10?

If a method has a cyclomatic complexity of 10, it means there are 10 independent paths through the method. This implies is that at least 10 test cases are needed to test all the different paths through the code. The lesser the number, the easier it is to test.

What is Fan Fan complexity?

Project Metrics. Structural fan-in (SFIN) and fan-out (SFOUT) values measure the relationships between files and between procedures. They measure the complexity of the static (design-time) structure of code. A useful way to look at SFIN and SFOUT is to view them as graph metrics.

What is fan out software engineering?

Fan-in refers to the maximum number of input signals that feed the input equations of a logic cell. Fan-out refers to the maximum number of output signals that are fed by the output equations of a logic cell.

What do you understand by data abstraction?

Data abstraction is the reduction of a particular body of data to a simplified representation of the whole. Abstraction, in general, is the process of taking away or removing characteristics from something in order to reduce it to a set of essential characteristics.

What causes increased productivity when object oriented paradigm is adopted?

Because of these three factors – modularity, extensibility, and reusability – object-oriented programming provides improved software-development productivity over traditional procedure-based programming techniques. 2.

What is NCSS for this method?

What should the square of Checkstyle 3.4 mean?

Since Checkstyle 3.4 Checks the number of other types a given class/record/interface/enum/annotation relies on. Also the square of this has been shown to indicate the amount of maintenance required in functional programs (on a file basis) at least. This check processes files in the following way:

Why is Checkstyle 3.4 not caused by inheritance?

Since Checkstyle 3.4 Measures the number of instantiations of other classes within the given class or record. This type of coupling is not caused by inheritance or the object oriented paradigm.

How to enable SuppressWarnings filter in Checkstyle settings?

The SuppressWarnings filter has to be enabled in the Checkstyle settings. 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. If the annotation does not work as expected try to change its position.