如何通过返回类对象来将一个类对象变量固定在另一类中? [英] How can fixed one class object variable in another class by returning class object ?

问题描述

示例，

Example,

class loan{
       private String name;
       private String id;
       private String address; 
//.. ... ..
// ... ... ..
//... ... ...

}


class librarian{
private String name;
private String id;
private String address;

public loan input_loan{
// .. .
//... ... ...
//... ... ...

return l1;

}
}

不是在主要类中，而是在两个没有继承的类中?

Not in main but in two different class without inheritance?
please if you have solution do it here.

推荐答案

不是100％肯定这是您要的内容，但似乎无法实例化库管理器类的方法中有一个新的借阅对象，因此您可以从该方法返回借阅对象?

如果是这样，那么您所缺少的就是这个:

Not 100% sure this is what you''re asking, but it looks like you''re having trouble instantiating a new loan object from within a method of the librarian class so you can return the loan object from the method?

If so, the piece you''re missing is this:

loan l1 = new loan();

用该代码实例化贷款后，可以调用贷款的设置器(您拥有我信任的设置者)来初始化贷款.

请注意，如果图书管理员和借贷类位于不同的包中，则需要在librarian.java中导入包含借贷类的包！

After you instantiate the loan with that code, you can then call setters on the loan (you have those I trust?) to initialize the loan.

Note that if the librarian and loan classes are in different packages, you will need to import the package containing the loan class in librarian.java!

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