在 maven 中使用 java-gnome 的困难

如何解决在 maven 中使用 java-gnome 的困难

我在 Ubuntu 18.04 LTS 上使用 Netbeans 12 IDE 并使用命令安装了 java-gnome：

sudo apt-get install libjava-gnome-java

我创建了一个小项目来测试通知，主类代码如下：

package com.mycompany.notifytest;
import org.gnome.gtk.Gtk;
import org.gnome.notify.Notify;
import org.gnome.notify.Notification;
/**
 *
 * @author nbs
 */
public class Main {
    
    public static void main(String[] args){
        Gtk.init(args);
        Notify.init("NotifyTest");
        Notification n = new Notification("Notify Test","Test Passed !","");
        n.show();
        
    }
    
}

现在每当我使用 F6 运行项目时，都会显示通知并且输出是：

cd /home/nbs/NetBeansProjects/NotifyTest; JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64 /snap/netbeans/41/netbeans/java/maven/bin/mvn "-Dexec.args=-classpath %classpath com.mycompany.notifytest.Main" -Dexec.executable=/usr/lib/jvm/java-11-openjdk-amd64/bin/java org.codehaus.mojo:exec-maven-plugin:3.0.0:exec
Running NetBeans Compile On Save execution. Phase execution is skipped and output directories of dependency projects (with Compile on Save turned on) will be used instead of their jar artifacts.
Scanning for projects...

----------------------< com.mycompany:NotifyTest >----------------------
Building NotifyTest 1.0-SNAPSHOT
--------------------------------[ jar ]---------------------------------
Downloading from central: https://repo.maven.apache.org/maven2/org/com/java.gnome/1.0/java.gnome-1.0.pom
The POM for org.com:java.gnome:jar:1.0 is missing,no dependency information available

--- exec-maven-plugin:3.0.0:exec (default-cli) @ NotifyTest ---
------------------------------------------------------------------------
BUILD SUCCESS
------------------------------------------------------------------------
Total time:  10.252 s
Finished at: 2021-03-04T13:37:04+05:30
------------------------------------------------------------------------

但是当我尝试从终端运行 .jar 文件时构建项目后，问题是：

Exception in thread "main" java.lang.NoClassDefFoundError: org/gnome/gtk/Gtk
    at com.mycompany.notifytest.Main.main(Main.java:17)
Caused by: java.lang.ClassNotFoundException: org.gnome.gtk.Gtk
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
    ... 1 more