drop jdk 8

Author: chitralverma

.github/workflows/pr-lint.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: "8"
+          java-version: "11"
           distribution: 'zulu'
           cache: 'sbt'
 

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: "8"
+          java-version: "11"
           distribution: "zulu"
           cache: "sbt"
 
@@ -89,7 +89,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: "8"
+          java-version: "11"
           distribution: "zulu"
           cache: "sbt"
 
@@ -125,7 +125,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: ["8", "11", "17", "21"]
+        java: ["11", "17", "21"]
         os: ["ubuntu-latest", "windows-latest", "macos-latest"]
 
     steps:
@@ -172,7 +172,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: "8"
+          java-version: "11"
           distribution: "zulu"
           cache: "sbt"
 

README.md

@@ -39,7 +39,7 @@ The project is mainly divided into 2 submodules,
 
 ## Compatibility
 
-- JDK version `>=8`
+- JDK version `>=11`
 - Scala version `2.12.x`, `2.13.x` and `3.3.x`. Default is `2.13.x`
 - Rust version `>=1.58`
 
@@ -49,7 +49,7 @@ The project is mainly divided into 2 submodules,
 
 The following tooling is required to start building `scala-polars`,
 
-- JDK 8+ ([OpenJDK](https://openjdk.org/projects/jdk/)
+- JDK 11+ ([OpenJDK](https://openjdk.org/projects/jdk/)
   or [Oracle Java SE](https://www.oracle.com/java/technologies/javase/))
 - [Rust](https://www.rust-lang.org/tools/install) (cargo, rustc etc.)
 - [sbt](https://www.scala-sbt.org/index.html)

project/GeneralSettings.scala

@@ -39,8 +39,8 @@ object GeneralSettings {
       "-language:postfixOps",
       "-unchecked",
       "-Xfatal-warnings"
-    ) ++ (if (priorTo213(scalaVersion.value)) Seq("-target:jvm-1.8")
-          else Seq("-release", "8")),
+    ) ++ (if (priorTo213(scalaVersion.value)) Seq("-target:jvm-11")
+          else Seq("-release", "11")),
     fork := true,
     turbo := true,
     assembly / assemblyMergeStrategy := {