[java] TooFewBranchesForSwitch should ignore Pattern Matching

Fixes #5249

docs/pages/release_notes.md

@@ -34,6 +34,9 @@ The old rule names still work but are deprecated.
   * [#4532](https://github.com/pmd/pmd/issues/4532): \[java] Rule misnomer for JUnit* rules
 * java-errorprone
   * [#5067](https://github.com/pmd/pmd/issues/5067): \[java] CloseResource: False positive for FileSystems.getDefault()
+* java-performance
+  * [#5249](https://github.com/pmd/pmd/issues/5249): \[java] TooFewBranchesForASwitchStatement false positive for Pattern Matching
+  * [#....](https://github.com/pmd/pmd/issues/....): \[java] TooFewBranchesForASwitchStatement should consider Switch Expressions
 
 ### 🚨 API Changes
 * java-bestpractices

pmd-java/src/main/resources/category/java/performance.xml

@@ -625,6 +625,8 @@ if-else statement to increase code readability.
                 <value>
 <![CDATA[
 //SwitchStatement[ (count(*) - 1) < $minimumNumberCaseForASwitch ]
+  (: exclude pattern matching :)
+  [not(*/SwitchLabel/TypePattern)]
 ]]>
                 </value>
             </property>

pmd-java/src/test/resources/net/sourceforge/pmd/lang/java/rule/performance/xml/TooFewBranchesForASwitchStatement.xml

@@ -69,4 +69,26 @@ public class ValidSwitch {
 }
         ]]></code>
     </test-code>
+
+    <test-code>
+        <description>[java] TooFewBranchesForASwitchStatement false positive for Pattern Matching</description>
+        <expected-problems>0</expected-problems>
+        <code><![CDATA[
+sealed interface S permits A {}
+final class A implements S {}
+public class Sample {
+    public void simpleSwitchStatment(S s) {
+        switch(s) {
+            case A a -> System.out.println("a");
+        }
+    }
+
+    public void simpleSwitchExpression(S s) {
+        String result = switch(s) {
+            case A a -> "a";
+        };
+    }
+}
+]]></code>
+    </test-code>
 </test-data>