More on Java Metrics

[bcholmes]

I assert that the following methods are identical in terms of cyclomatic complexity.

Version A:

public String getFullName() {
    String name;
    if (this.fullName == null) {
        name = getFirstName() + " " + getLastName();
    } else {
        name = this.fullName;
    }
    return name;
}

Version B:

public String getFullName() {
    if (this.fullName == null) {
        return getFirstName() + " " + getLastName();
    } else {
        return this.fullName;
    }
}

Version C:

public String getFullName() {
    return (this.fullName == null) ? (getFirstName() + " " + getLastName()) : this.fullName;
}

Most cyclomatic complexity counters that I've seen claim that Version A has a cyclomatic complexity of 2, version B has a cyclomatic complexity of 3 or 4 and version C has a cyclomatic complexity of 1. I claim that they all have a cyclomatic complexity of 2.