build: require java 17+ and update readme (#2448)

* build: require java 17+ and update readme

* ci: update java version in github workflows

* ci: update java version in github workflows pt 2

* Update settings.gradle.kts

Author: ImMorpheus

.github/workflows/check-spotless.yaml

@@ -9,4 +9,6 @@ on:
 jobs:
   call-check:
     uses: SpongePowered/.github/.github/workflows/shared-check-spotless.yaml@master
-    secrets: inherit
+    with:
+      runtime_version: 17
+    secrets: inherit

.github/workflows/check-style.yaml

@@ -9,4 +9,6 @@ on:
 jobs:
   call-check:
     uses: SpongePowered/.github/.github/workflows/shared-check-style.yaml@master
+    with:
+      runtime_version: 17
     secrets: inherit

.github/workflows/ci.yaml

@@ -14,6 +14,7 @@ jobs:
   call-build:
     uses: SpongePowered/.github/.github/workflows/shared-ci.yaml@master
     with:
+      runtime_version: 17
       publish_snapshot_javadoc: true
       publishing_branch_regex: 'api-\d+'
     secrets: inherit

README.md

@@ -1,4 +1,4 @@
-SpongeAPI [![Build Status](https://travis-ci.org/SpongePowered/SpongeAPI.svg?branch=master)](https://travis-ci.org/SpongePowered/SpongeAPI)
+SpongeAPI ![Build Status](https://github.com/SpongePowered/SpongeAPI/actions/workflows/ci.yaml/badge.svg?branch=api-10)
 =============
 A mature Minecraft plugin API (not including an implementation), licensed under the [MIT License]. 
 
@@ -11,7 +11,7 @@ A mature Minecraft plugin API (not including an implementation), licensed under
 * [Discord] `#plugins`
 
 ## Prerequisites
-* [Java] 8 (JDK 16 recommended for development)
+* [Java] 17
 
 ## Clone
 The following steps will ensure your project is cloned properly.  
@@ -24,7 +24,7 @@ __Note:__ If you do not have [Gradle] installed then use ./gradlew for Unix syst
 
 In order to build SpongeAPI you simply need to run the `gradle` command. You can find the compiled JAR file in `./build/libs` labeled similarly to 'spongeapi-x.x.x-SNAPSHOT.jar'.
 
-Sponge will use a javac version of *at least* 11. If an older JDK is used to launch Gradle, JDK 11 will be downloaded automatically.
+Sponge will use a javac version of *at least* 17. If an older JDK is used to launch Gradle, JDK 17 will be downloaded automatically.
 
 ## Contributing
 Are you a talented programmer looking to contribute some code? We'd love the help!
@@ -37,9 +37,9 @@ Are you a talented programmer looking to contribute some code? We'd love the hel
 [IntelliJ]: https://www.jetbrains.com/idea/
 [Issues]: https://github.com/SpongePowered/SpongeAPI/issues
 [Documentation]: https://docs.spongepowered.org/
-[Java]: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
+[Java]: https://adoptium.net/temurin/releases/
 [Source]: https://github.com/SpongePowered/SpongeAPI/
 [MIT License]: https://www.tldrlegal.com/license/mit-license
-[Discord]: https://discord.gg/PtaGRAs
+[Discord]: https://discord.gg/sponge
 [Preparing for Development]: https://docs.spongepowered.org/stable/en/preparing/
 [Javadocs]: https://jd.spongepowered.org

settings.gradle.kts

@@ -21,7 +21,3 @@ pluginManagement {
 plugins {
     id("org.gradle.toolchains.foojay-resolver-convention") version ("0.3.0")
 }
-
-if (JavaVersion.current() < JavaVersion.VERSION_11) {
-    throw GradleException("SpongeAPI requires at least Java 11 to build, but you have ${JavaVersion.current()}.")
-}