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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: 11 rules found
java21
    Impact
      Clean code attribute
        1. Use when instead of a single if inside a pattern match body

           Code Smell
        2. "String.indexOf" should be used with correct ranges

           Bug
        3. "Math.clamp" should be used with correct ranges

           Bug
        4. Virtual threads should not run tasks that include synchronized code

           Bug
        5. "setDaemon", "setPriority" and "getThreadGroup" should not be invoked on virtual threads

           Bug
        6. Use built-in "Math.clamp" methods

           Code Smell
        7. Virtual threads should be used for tasks that include heavy blocking operations

           Bug
        8. Use switch instead of if-else chain to compare a variable against multiple cases

           Code Smell
        9. Use record pattern instead of explicit field access

           Code Smell
        10. Reverse view should be used instead of reverse copy in read-only cases

           Code Smell
        11. Reverse iteration should utilize reversed view

           Code Smell

        Use switch instead of if-else chain to compare a variable against multiple cases

        intentionality - clear
        maintainability
        Code Smell
        Quick FixIDE quick fixes available with SonarQube for IDE
        • java21

        Why is this an issue?

        How can I fix it?

        More Info

        Comparing a variable to multiple cases is a frequent operation. This can be done using a sequence of if-else statements. However, for many cases like enums or simple value comparisons, a switch statement is the better alternative. With Java 21, the switch statement has been significantly improved to support pattern matching and record pattern.

        Using a switch statement instead of an if-else chain provides benefits like clearer code, certainty of covering all cases, and may even improve performance.

        This rule raises an issue when an if-else chain should be replaced by a switch statement.

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          Available Since
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