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Java

Java static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your JAVA code

  • All rules 733
  • Vulnerability60
  • Bug175
  • Security Hotspot40
  • Code Smell458

  • Quick Fix 65
Filtered: 28 rules found
error-handling
    Impact
      Clean code attribute
        1. Return values should not be ignored when they contain the operation status code

           Bug
        2. Delivering code in production with debug features activated is security-sensitive

           Security Hotspot
        3. "java.nio.Files#delete" should be preferred

           Code Smell
        4. Exceptions should not be created without being thrown

           Bug
        5. Unit tests should throw exceptions

           Code Smell
        6. "catch" clauses should do more than rethrow

           Code Smell
        7. "Iterator.next()" methods should throw "NoSuchElementException"

           Bug
        8. "IllegalMonitorStateException" should not be caught

           Code Smell
        9. "Exception" should not be caught when not required by called methods

           Code Smell
        10. Classes named like "Exception" should extend "Exception" or a subclass

           Code Smell
        11. "InterruptedException" and "ThreadDeath" should not be ignored

           Bug
        12. Exceptions should be either logged or rethrown but not both

           Code Smell
        13. "main" should not "throw" anything

           Code Smell
        14. Exceptions should not be thrown from servlet methods

           Vulnerability
        15. "NullPointerException" should not be caught

           Code Smell
        16. "NullPointerException" should not be explicitly thrown

           Code Smell
        17. "java.lang.Error" should not be extended

           Code Smell
        18. Exception types should not be tested using "instanceof" in catch blocks

           Code Smell
        19. Throwable and Error should not be caught

           Code Smell
        20. Exception handlers should preserve the original exceptions

           Code Smell
        21. Exception classes should have final fields

           Code Smell
        22. Exceptions should not be thrown in finally blocks

           Code Smell
        23. Checked exceptions should not be thrown

           Code Smell
        24. Public methods should throw at most one checked exception

           Code Smell
        25. Jump statements should not occur in "finally" blocks

           Bug
        26. Try-catch blocks should not be nested

           Code Smell
        27. Exceptions in "throws" clauses should not be superfluous

           Code Smell
        28. Generic exceptions should never be thrown

           Code Smell

        Try-catch blocks should not be nested

        intentionality - clear
        maintainability
        Code Smell
        • error-handling
        • confusing

        Why is this an issue?

        Nesting try/catch blocks severely impacts the readability of source code because it makes it too difficult to understand which block will catch which exception.

          Available In:
        • SonarQube IdeCatch issues on the fly,
          in your IDE
        • SonarQube CloudDetect issues in your GitHub, Azure DevOps Services, Bitbucket Cloud, GitLab repositories
        • SonarQube Community BuildAnalyze code in your
          on-premise CI
          Available Since
          9.1
        • SonarQube ServerAnalyze code in your
          on-premise CI
          Developer Edition
          Available Since
          9.1

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