java Eclipse jre 1.5>1.8

Question

有人能把这些代码从jre 1.5转换成1.8吗

即使我将我的eclipse项目版本设置为1.5，我的jar也会崩溃

  Map<String, byte[]> resources = new HashMap<>();
        Enumeration<JarEntry> enumeration = jar.entries();




   Class<?> clazz = loader.loadClass("com.kit.Application");
        Method main = clazz.getMethod("main", String[].class);




 if (main != null) {
            main.invoke(null, (Object) new String[]{});


Class<?> applicationClass = applicationObject.getClass();

                Method setDockIconImage = applicationClass.getDeclaredMethod("setDockIconImage", new Class[]{Image.class});
                setDockIconImage.invoke(applicationObject, (Object) ICON_IMAGE);`