Update to JDK 20

Author: purejava

.github/workflows/publish-github.yml

@@ -17,8 +17,8 @@ jobs:
             ref: 'develop'
       - uses: actions/setup-java@v3
         with:
-          distribution: 'temurin'
-          java-version: 19
+          distribution: 'zulu'
+          java-version: 20
           cache: 'maven'
           gpg-private-key: ${{ secrets.RELEASES_GPG_PRIVATE_KEY }} # Value of the GPG private key to import
           gpg-passphrase: MAVEN_GPG_PASSPHRASE # env variable for GPG private key passphrase

.github/workflows/publish-maven.yml

@@ -17,8 +17,8 @@ jobs:
             ref: 'develop'
       - uses: actions/setup-java@v3
         with:
-          distribution: 'temurin'
-          java-version: 19
+          distribution: 'zulu'
+          java-version: 20
           cache: 'maven'
           server-id: ossrh
           server-username: MAVEN_USERNAME

.github/workflows/publish-minimal-github.yml

@@ -17,8 +17,8 @@ jobs:
             ref: 'minimal'
       - uses: actions/setup-java@v3
         with:
-          distribution: 'temurin'
-          java-version: 19
+          distribution: 'zulu'
+          java-version: 20
           cache: 'maven'
           gpg-private-key: ${{ secrets.RELEASES_GPG_PRIVATE_KEY }} # Value of the GPG private key to import
           gpg-passphrase: MAVEN_GPG_PASSPHRASE # env variable for GPG private key passphrase

.github/workflows/publish-minimal-maven.yml

@@ -17,8 +17,8 @@ jobs:
             ref: 'minimal'
       - uses: actions/setup-java@v3
         with:
-          distribution: 'temurin'
-          java-version: 19
+          distribution: 'zulu'
+          java-version: 20
           cache: 'maven'
           server-id: ossrh
           server-username: MAVEN_USERNAME

README.md

@@ -10,7 +10,7 @@ Based on libayatana-appindicator3-1 (0.5.92-1)
 Based on libappindicator3-1 (12.10.1+20.10.20200706.1-0ubuntu1)
 
 # Requires
-Java 19 (preview)
+Java 20 (preview)
 - due to the use of the new Foreign Function & Memory API
 
 # Usage

pom.xml

@@ -36,8 +36,8 @@
     </scm>
 
     <properties>
-        <maven.compiler.source>19</maven.compiler.source>
-        <maven.compiler.target>19</maven.compiler.target>
+        <maven.compiler.source>20</maven.compiler.source>
+        <maven.compiler.target>20</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
         <junit.version>5.9.2</junit.version>
@@ -132,8 +132,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.11.0</version>
                 <configuration>
-                    <source>19</source>
-                    <target>19</target>
+                    <source>20</source>
+                    <target>20</target>
                     <compilerArgs>
                         --enable-preview
                     </compilerArgs>

src/main/java/org/purejava/linux/AppIndicator.java

@@ -7,8 +7,15 @@
 import java.nio.ByteOrder;
 import java.lang.foreign.*;
 import static java.lang.foreign.ValueLayout.*;
-public class AppIndicator extends _AppIndicator {
+/**
+ * {@snippet :
+ * typedef struct _AppIndicator AppIndicator;
+ * }
+ */
+public final class AppIndicator extends _AppIndicator {
 
+    // Suppresses default constructor, ensuring non-instantiability.
+    private AppIndicator() {}
 }
 
 

src/main/java/org/purejava/linux/AppIndicatorClass.java

@@ -7,8 +7,15 @@
 import java.nio.ByteOrder;
 import java.lang.foreign.*;
 import static java.lang.foreign.ValueLayout.*;
-public class AppIndicatorClass extends _AppIndicatorClass {
+/**
+ * {@snippet :
+ * typedef struct _AppIndicatorClass AppIndicatorClass;
+ * }
+ */
+public final class AppIndicatorClass extends _AppIndicatorClass {
 
+    // Suppresses default constructor, ensuring non-instantiability.
+    private AppIndicatorClass() {}
 }
 
 

src/main/java/org/purejava/linux/AppIndicatorPrivate.java

@@ -7,8 +7,15 @@
 import java.nio.ByteOrder;
 import java.lang.foreign.*;
 import static java.lang.foreign.ValueLayout.*;
-public class AppIndicatorPrivate {
+/**
+ * {@snippet :
+ * typedef struct _AppIndicatorPrivate AppIndicatorPrivate;
+ * }
+ */
+public final class AppIndicatorPrivate {
 
+    // Suppresses default constructor, ensuring non-instantiability.
+    private AppIndicatorPrivate() {}
 }
 
 

src/main/java/org/purejava/linux/AtkAction.java

@@ -7,8 +7,15 @@
 import java.nio.ByteOrder;
 import java.lang.foreign.*;
 import static java.lang.foreign.ValueLayout.*;
-public class AtkAction {
+/**
+ * {@snippet :
+ * typedef struct _AtkAction AtkAction;
+ * }
+ */
+public final class AtkAction {
 
+    // Suppresses default constructor, ensuring non-instantiability.
+    private AtkAction() {}
 }