private final LoadingMethodDeviceMapper loadingMethodDeviceMapper; private final TemplateMethodDeviceMapper templateMethodDeviceMapper; private final LoadingStationMapper loadingStationMapper; public LoadingMethodDeviceSeviceImpl(LoadingMethodDeviceMapper loadingMethodDeviceMapper, TemplateMethodDeviceMapper templateMethodDeviceMapper, LoadingStationMapper loadingStationMapper) { this.loadingMethodDeviceMapper = loadingMethodDeviceMapper; this.templateMethodDeviceMapper = templateMethodDeviceMapper; this.loadingStationMapper = loadingStationMapper; }

这是一个Java类中的构造方法，其中private final关键字修饰了三个变量：loadingMethodDeviceMapper、templateMethodDeviceMapper和loadingStationMapper。这些变量在构造方法中被初始化，并且在类的其他方法中可以被访问和使用，但不能被修改。这种做法可以确保这些变量的值在对象创建后不会被修改，从而提高代码的安全性和可靠性。