Fix #4820: Change JDK baseline for Jackson 3.0 from Java 8 to Java 17

.github/workflows/main.yml

@@ -4,15 +4,13 @@ on:
     branches:
     - master
     - "3.0"
-    - "2.19"
     paths-ignore:
     - "README.md"
     - "release-notes/*"
   pull_request:
     branches:
     - master
     - "3.0"
-    - "2.19"
     paths-ignore:
     - "README.md"
     - "release-notes/*"
@@ -26,13 +24,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java_version: ['8', '11', '17', '21', '22']
+        java_version: ['17', '21', '22']
         os: ['ubuntu-22.04']
         include:
-          - java_version: '8'
+          - java_version: '17'
             os: 'ubuntu-22.04'
             release_build: 'R'
-          - java_version: '8'
+          - java_version: '17'
             os: 'windows-latest'
             is_windows: 'W'
     env:

pom.xml

@@ -37,6 +37,10 @@
   </scm>
 
   <properties>
+    <!-- [databind#4820]: Java 17 baseline -->
+    <javac.src.version>17</javac.src.version>
+    <javac.target.version>17</javac.target.version>
+
     <!-- 12-Nov-2022, tatu: [databind#3659] Verify Android SDK compatibility.
 
       Baseline compatibility:

release-notes/VERSION

@@ -74,6 +74,7 @@ Versions: 3.x (for earlier see VERSION-2.x)
 #4664: Change `EnumNamingStrategy.convertEnumToExternalName()` to take `MapperConfig` argument-
  (contributed by Joo-Hyuk K)
 #4818: Rename `AnnotationIntrospector.findDefaultCreator()` as `findPreferredCreator()`
+#4820: Change JDK baseline for Jackson 3.0 from Java 8 to Java 17
 - Remove `MappingJsonFactory`
 - Add context parameter for `TypeSerializer` contextualization (`forProperty()`)
 - Default for `JsonNodeFeature.STRIP_TRAILING_BIGDECIMAL_ZEROES` changed to `false` for 3.0