Coupled Classes Modified

API ID: CountClassCoupledModified
Languages: Basic, C#, Java, Pascal, Python
Targets: Classes

Number of other non-standard classes coupled to.

Same as Coupled Classes (Chidamber & Kemerer's CBO), except coupling to standard-library classes doesn't count — only coupling to other user-defined classes does.

For example:

class Helper {

  public int value;

  public void doWork() {
    value++;
  }

}

class Coupler {

  public void useHelper() {
    Helper h = new Helper();
    h.doWork();

    java.util.ArrayList<String> list = new java.util.ArrayList<String>();
    list.add("test");
    System.out.println(list.size());
  }

}

Coupler uses a type, data, or member from five different classes: the user-defined Helper, plus four standard-library ones (java.util.ArrayList, String, System, and java.io.PrintStream, the last used implicitly via System.out), giving CountClassCoupled = 5. Only Helper is non-standard, so CountClassCoupledModified = 1.

See Coupled Classes to also count coupling to standard-library classes.

Targets By Language:

• Basic: Class, Struct
• C#: Class, Struct
• Java: Class, Interface
• Pascal: Class, Interface
• Python: Class

Configuration:

• This metric can be disabled from "Project Configuration/Metrics/Object Orientated" with the "Show coupling and cohesion metrics" option.