Set Java version for all Java projects.

Fabric/build.gradle

@@ -4,9 +4,6 @@ plugins {
     id 'idea'
 }
 
-sourceCompatibility = JavaVersion.VERSION_16
-targetCompatibility = JavaVersion.VERSION_16
-
 archivesBaseName = "${mod_name}-fabric-${minecraft_version}"
 
 repositories {

Forge/build.gradle

@@ -14,8 +14,6 @@ apply plugin: 'maven-publish'
 
 archivesBaseName = "${mod_name}-forge-${minecraft_version}"
 
-java.toolchain.languageVersion = JavaLanguageVersion.of(16)
-
 minecraft {
     mappings channel: 'official', version: minecraft_version
     
@@ -78,7 +76,6 @@ jar {
     from project(":Common").sourceSets.main.output
 }
 
-
 jar.finalizedBy('reobfJar')
 
 publishing {

build.gradle

@@ -2,6 +2,8 @@ subprojects {
     
     apply plugin: 'java'
     
+    java.toolchain.languageVersion = JavaLanguageVersion.of(16)
+    
     jar {
         manifest {
             attributes([