Bump Java requirement to 17

.github/workflows/maven.yml

@@ -10,7 +10,7 @@ jobs:
   build_and_test:
     strategy:
       matrix:
-        jdkversion: [11, 17, 21]
+        jdkversion: [17, 21]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3

README.md

@@ -115,7 +115,7 @@ You can also create your own translation file and, if you want, you can share it
 ## Requirements
 
 ##### Compiling requirements:
->- JDK 11+
+>- JDK 17+
 >- Maven (3.8.8+)
 >- Git/GitHub (Optional)
 
@@ -124,7 +124,7 @@ You can also create your own translation file and, if you want, you can share it
 >- Execute command "mvn clean package"
 
 ##### Running requirements:
->- Java 11+
+>- Java 17+
 >- Paper or Spigot (1.16.5 and up)
 >- ProtocolLib (optional, required by some features)
 

pom.xml

@@ -60,10 +60,10 @@
         <!-- Environment properties -->
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.source>11</java.source>
+        <java.source>17</java.source>
-        <java.target>11</java.target>
+        <java.target>17</java.target>
-        <java.apiVersion>11</java.apiVersion>
+        <java.apiVersion>17</java.apiVersion>
-        <java.compiler.minimumVersion>11</java.compiler.minimumVersion>
+        <java.compiler.minimumVersion>17</java.compiler.minimumVersion>
         <maven.minimumVersion>3.8.8</maven.minimumVersion>
 
         <!-- Versioning properties -->