如果我理解你的问题。。。

Is there any function to dynamically add java objects to a running JVM?

然后使用以下内容向您的应用程序动态添加JAR。（根据需要添加错误检查和异常处理）

public synchronized void addJarToClassPath(final File jarFile) {
    final String methodName = "addURL";
    final Class<?>[] methodTypes = new Class[] { URL.class };
    try {
        final Method method = URLClassLoader.class.getDeclaredMethod(methodName, methodTypes);
        method.setAccessible(true);
        method.invoke((URLClassLoader) ClassLoader.getSystemClassLoader(), new Object[] { jarFile.toURI().toURL() });
    } catch (final Exception e) {
        throw new RuntimeException("Failed to load " + jarFile.getAbsolutePath(), e);
    }
}