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  1. Rules Repository
  2. RSPEC-2974

Classes without "public" constructors should be "final"

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    Details

    • Type: Code Smell Detection
    • Status: Active
    • Resolution: Unresolved
    • Labels:
    • Message:
      Make this class "final" or add a public constructor.
    • Default Severity:
      Minor
    • Impact:
      Low
    • Likelihood:
      Low
    • Covered Languages:
      Java
    • Remediation Function:
      Constant/Issue
    • Constant Cost:
      5min
    • Analysis Scope:
      Main Sources
    • Checkstyle:
      FinalClass
    • PMD:
      ClassWithOnlyPrivateConstructorsShouldBeFinal

      Description

      Classes with only private constructors should be marked final to prevent any mistaken extension attempts.

      Noncompliant Code Example

      public class PrivateConstructorClass {  // Noncompliant
  private PrivateConstructorClass() {
    // ...
  }

  public static int magic(){
    return 42;
  }
}

      Compliant Solution

      public final class PrivateConstructorClass {  // Compliant
  private PrivateConstructorClass() {
    // ...
  }

  public static int magic(){
    return 42;
  }
}

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          Issue Links

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          New Feature - A new feature of the product, which has yet to be developed. SONARJAVA-1144 Rule: S2974 Classes without "public" constructors should be "final"

          • Major - Major loss of function.
          • Closed

            Activity

              People

              Assignee:
              Unassigned Unassigned
              Reporter:
              ann.campbell.2 Ann Campbell
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                Dates

                Created:
                Updated: