Target of v4 is Java 21

Author: mkarg

.github/workflows/gradle.yml

@@ -16,10 +16,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v1
       with:
-        java-version: 17
+        java-version: 21
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Build with Gradle

README.markdown

@@ -1,7 +1,7 @@
 JCommander
 ==========
 
-This is an annotation based parameter parsing framework for Java 8 (JCommander 1.x), 11 (JCommander 2.x) and 17 (JCommander 3.x).
+This is an annotation based parameter parsing framework for Java 8 (JCommander 1.x), 11 (JCommander 2.x), 17 (JCommander 3.x) and 21 (JCommander 4.x).
 
 Here is a quick example:
 

build.gradle.kts

@@ -39,8 +39,8 @@ buildscript {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
 }
 
 repositories {

kobalt/src/Build.kt

@@ -12,7 +12,7 @@ val jcommander = project {
     name = "jcommander"
     group = "com.beust"
     artifactId = name
-    version = "3.0"
+    version = "4.0"
     description = "A Java library to parse command line options"
 
     dependenciesTest {
@@ -26,7 +26,7 @@ val jcommander = project {
     }
 
     javaCompiler {
-        args("-target", "17", "-source", "17", "-g", "-encoding", "utf-8")
+        args("-target", "21", "-source", "21", "-g", "-encoding", "utf-8")
     }
 
     osgi {}

misc.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_6" default="false" assert-keyword="true" jdk-15="true" project-jdk-name="17" project-jdk-type="JavaSDK" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_6" default="false" assert-keyword="true" jdk-15="true" project-jdk-name="21" project-jdk-type="JavaSDK" />
 </project>