构造器会把该实例变量(即信用限制)设为一个参数。

The constructor will set the credit limit instance variable to be equal to that specified as a parameter.

youdao

这意味着，如果一个变量被声明为接口类型，其值可参考，即实例化任何实现接口的类的任何对象。

This means that if a variable is declared to be the type of an interface, its value can reference any object that is instantiated from any class that implements the interface.

youdao

这意味着，如果一个变量被声明为接口类型，其值可参考，即实例化任何实现接口的类的任何对象。

This means that if a variable is declared to be the type of an interface, its value can reference any object that is instantiated from any class that implements the interface.

youdao