Java 反射方法调用

try {
    Class<ShengChengWenJianSingl> classType = ShengChengWenJianSingl.class;
    Constructor<ShengChengWenJianSingl> constructor = classType.getDeclaredConstructor(String.class, String.class);
    constructor.setAccessible(true);
    ShengChengWenJianSingl singleton = constructor.newInstance(null, null);
    ShengChengWenJianSingl singleton2 = ShengChengWenJianSingl.getInstance(null, null);
    System.out.println(singleton == singleton2);
    try {
        Method method = classType.getDeclaredMethod("addd", String.class, String.class);
        method.setAccessible(true);
        // 如果方法是静态的，传递 null 作为实例对象；如果不是静态的，传递实例对象
        Object result = method.invoke(singleton, "1212", "2222222222222");
        // 使用 result 处理方法调用的返回值
    } catch (NoSuchMethodException | IllegalAccessException |
             InvocationTargetException e) {
        e.printStackTrace();
    }
} catch (Exception e) {
    e.printStackTrace();
}