SonarQube Java 3.12 发布了，Sonar (SonarQube)是一个开源平台，用于管理源代码的质量。Sonar 不只是一个质量数据报告工具，更是代码质量管理平台。支持的语言包括：Java、PHP、C#、C、Cobol、PL/SQL、Flex 等。
9项新规则：
“enum” fields should not be publicly mutable (bad-practice, security)
Child class methods named for parent class methods should be overrides (pitfall)
Constructors should not be used to instantiate “String” and primitive-wrapper classes (performance)
Locale should be used in String operations (cert, unpredictable)
Raw byte values should not be used in bitwise operations in combination with shifts (bug)
Resources as defined by user should be closed (denial-of-service, security)
Sets with elements that are enum values should be replaced with EnumSet (performance)
String function use should be optimized for single characters (clumsy, performance)
bug修复：
[SONARJAVA-591] - FP on Anonymous class should be lambda : Apply only on SAM interfaces
[SONARJAVA-964] - "this" should be registered in interfaces (for "default" methods)
[SONARJAVA-1155] - S2325 FP when creating non static anonymous inner class accessing members and false negative with method belonging to same hierarchy
[SONARJAVA-1298] - Semantic: resolve parameterized methods
[SONARJAVA-1513] - FP on S2160: Classes annotated with lombok's @EqualsAndHashCode should be ignored
[SONARJAVA-1515] - SE: System.exit call should be a sink in SE/CFG
[SONARJAVA-1535] - Substitution of Type parameters should be handled correctly when used in combination of wildcards
[SONARJAVA-1538] - CFG SE : nested statements in try catch end up with wrong CFG
[SONARJAVA-1543] - Receiver type on inner class constructors
[SONARJAVA-1550] - FP S2226 when field is annotated with @Inject
[SONARJAVA-1553] - FP on S2162: final equals methods using instanceof their owner are symmetric
[SONARJAVA-1554] - FP on S2221: invocation of unknown methods should not raise issue
[SONARJAVA-1557] - FP on UndocumentedApi: public constructors of non-public classes are not public
[SONARJAVA-1558] - ArchitecturalConstraints should handle differentiation between wildcards "*" and "**"
[SONARJAVA-1564] - FP S1948: Field annotated with @Inject are always serializable
[SONARJAVA-1577] - Type of ".class" expressions should be a parametrized class type instead of the raw type class
[SONARJAVA-1584] - Prefering method without var args first
[SONARJAVA-1585] - Absent type in static on demand import causes class cast exception
改进：
[SONARJAVA-1182] - Provide a more meaningful error message when analysising a semantically incorrect Java source file
[SONARJAVA-1225] - S1948 should handle collection types properly
[SONARJAVA-1514] - Invariance of generics not handled correctly
[SONARJAVA-1520] - S2447 : FP on methods annotated with @CheckForNull
[SONARJAVA-1528] - FP in S00112 when a method call within body of the method is throwing a generic exception
[SONARJAVA-1555] - S107 : Ignore methods annotated with Spring '@RequestMapping'
[SONARJAVA-1568] - FP S2694 Anonymous classes should not be reported
[SONARJAVA-1570] - Static method check should identify method getClass() as being a non-static reference
[SONARJAVA-1572] - Classpath construction should not go into wildcard lookup when filename is fully specified
[SONARJAVA-1573] - S2638 should not raise issue for change of contract compliant with LSP
[SONARJAVA-1575] - Semantic: Return type of parametrized method wrongly resolved when using arrays
[SONARJAVA-1579] - Add a parameter to rule template S2253 to ignore matching on parameters
[SONARJAVA-1583] - Add missing scope for switch statements
[SONARJAVA-1588] - Better logging of SO errors
[SONARJAVA-1589] - Semantic: hiding static parametrized methods wrongly resolved
新特性：
[SONARJAVA-371] - Rule S1449: Locale should be used in String operations
[SONARJAVA-716] - Rule S1641: Sets with elements that are enum values should be replaced with EnumSet
[SONARJAVA-848] - Rule S2058: Non-serializable values should not be stored in "Serializable" classes
[SONARJAVA-1502] - Rule: S3546 rule template for unclosed resource
[SONARJAVA-1551] - Rule S3034: Raw byte values should not be used in bitwise operations in combination with shifts
[SONARJAVA-1552] - Rule S2129: Constructors should not be used to instantiate "String" and primitive-wrapper classes
[SONARJAVA-1560] - Rule S3066: "enum" fields should not be publicly mutable
[SONARJAVA-1561] - Rule S3027: String function use should be optimized for single characters
[SONARJAVA-1562] - Rule S2177: Child class methods named for parent class methods should be overrides
任务：
[SONARJAVA-1486] - Provide a way to verify behavior of checks with no semantic
[SONARJAVA-1566] - Rename java-squid module to java-frontend
[SONARJAVA-1567] - SubscriptionBaseVisitor class should be removed
[SONARJAVA-1586] - SE: Post statement checks are executed twice