Update Java baseline to Java 17 [databind#4820] (#332)

.github/workflows/dep_build_v3.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java_version: ['8', '17', '21']
+        java_version: ['17', '21']
     env:
       JAVA_OPTS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1"
     steps:

.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/*"
@@ -22,13 +20,13 @@ permissions:
 
 jobs:
   build:
-    runs-on: 'ubuntu-20.04'
+    runs-on: 'ubuntu-22.04'
     strategy:
       fail-fast: false
       matrix:
-        java_version: ['8', '11', '17', '21']
+        java_version: ['17', '21']
         include:
-          - java_version: '8'
+          - java_version: '17'
             release_build: 'R'
     env:
       JAVA_OPTS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1"

datetime/pom.xml

@@ -51,7 +51,6 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.0</version>
         <inherited>true</inherited>
         <configuration>
           <source>${javac.src.version}</source>

pom.xml

@@ -33,6 +33,12 @@
     <url>https://github.com/FasterXML/jackson-modules-java8/issues</url>
   </issueManagement>
 
+  <properties>
+    <!-- [databind#4820]: Java 17 baseline -->
+    <javac.src.version>17</javac.src.version>
+    <javac.target.version>17</javac.target.version>
+  </properties>
+
   <!-- NOTE: `dependencyManagement` comes from jackson-bom -->
 
   <dependencies>

release-notes/VERSION

@@ -17,6 +17,7 @@ due to number of types.
 
 - #68: Parsing of `ZoneId` should respect `ALLOW_COERCION_OF_SCALARS`
   wrt empty String
+- Minimum Java baseline: Java 17
 - Deprecate "paramater names" and "datatypes" modules as functionality
   now included directly in `jackson-databind`
 - Remove legacy `JSR310Module`