Build and test with Java 21 or newer only

Author: mkurz

.github/workflows/ci.yml

@@ -24,10 +24,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         scala: [2.13.17, 2.12.20, 3.3.7]
-        java: [temurin@8, temurin@11]
-        exclude:
-          - java: temurin@8
-            os: macos-latest
+        java: [temurin@21, temurin@25]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Ignore line ending differences in git
@@ -48,20 +45,20 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Setup Java (temurin@8)
-        if: matrix.java == 'temurin@8'
+      - name: Setup Java (temurin@21)
+        if: matrix.java == 'temurin@21'
         uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 8
+          java-version: 21
           cache: sbt
 
-      - name: Setup Java (temurin@11)
-        if: matrix.java == 'temurin@11'
+      - name: Setup Java (temurin@25)
+        if: matrix.java == 'temurin@25'
         uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 11
+          java-version: 25
           cache: sbt
 
       - name: Setup sbt
@@ -97,7 +94,7 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         scala: [2.12.20]
-        java: [temurin@8]
+        java: [temurin@21]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Ignore line ending differences in git
@@ -117,20 +114,20 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Setup Java (temurin@8)
-        if: matrix.java == 'temurin@8'
+      - name: Setup Java (temurin@21)
+        if: matrix.java == 'temurin@21'
         uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 8
+          java-version: 21
           cache: sbt
 
-      - name: Setup Java (temurin@11)
-        if: matrix.java == 'temurin@11'
+      - name: Setup Java (temurin@25)
+        if: matrix.java == 'temurin@25'
         uses: actions/setup-java@v5
         with:
           distribution: temurin
-          java-version: 11
+          java-version: 25
           cache: sbt
 
       - name: Setup sbt

build.sbt

@@ -16,7 +16,7 @@ lazy val sslConfigCore = project
   .settings(AutomaticModuleName.settings("ssl.config.core"))
   .settings(osgiSettings: _*)
   .settings(
-    javacOptions ++= Seq("-source", "1.8", "-target", "1.8"),
+    javacOptions ++= Seq("-target", "21"),
     name                        := "ssl-config-core",
     mimaReportSignatureProblems := true,
     mimaPreviousArtifacts       := Set("com.typesafe" %% "ssl-config-core" % "0.7.0"),
@@ -97,11 +97,6 @@ ThisBuild / githubWorkflowPublish := Seq(
 ThisBuild / githubWorkflowOSes := Seq("ubuntu-latest", "macos-latest", "windows-latest")
 
 ThisBuild / githubWorkflowJavaVersions := Seq(
-  JavaSpec.temurin("8"),
-  JavaSpec.temurin("11"),
-  // JavaSpec.temurin("17"), // can't test currently because until we drop usage of sun.security.x509.*
-  // JavaSpec.temurin("21"),
-  // JavaSpec.temurin("25"),
+  JavaSpec.temurin("21"),
+  JavaSpec.temurin("25"),
 )
-
-ThisBuild / githubWorkflowBuildMatrixExclusions += MatrixExclude(Map("java" -> "temurin@8", "os" -> "macos-latest"))