简体繁体 English

从一类的文本字段中获取输入，然后在另一类中进行扫描

[英]Taking input from a text field in one class and scanning it in a different class

原文 2013-05-15 03:02:10 8 1 java/ swing/ jframe/ java.util.scanner

I am trying to make a GUI for a program I have completed and do not want to modify. 我正在尝试为已完成但不想修改的程序制作GUI。 My problem is the program uses a scanner to get user input and I don't know how to get input from the GUI to the scanner. 我的问题是程序使用扫描仪获取用户输入，但我不知道如何从GUI向扫描仪获取输入。 I know how to use getText() from a text field in the GUI but that doesn't update the scanner so the main program just waits for that input and doesn't continue. 我知道如何从GUI的文本字段中使用getText（），但这不会更新扫描程序，因此主程序只是等待该输入而不会继续。

1 个解决方案

"I am trying to make a GUI for a program I have completed and do not want to modify." “我正在尝试为已完成但不想修改的程序制作GUI。”

When you give restrictions such as this, it is usually a good idea to explain more, such as the reasons for the restriction; 当您给出这样的限制时，通常最好多解释一下，例如限制的原因。 this understanding often helps us give better answers. 这种理解通常可以帮助我们给出更好的答案。

"My problem is the program uses a scanner to get user input and I don't know how to get input from the GUI to the scanner. I know how to use getText() from a text field in the GUI but that doesn't update the scanner so the main program just waits for that input and doesn't continue." “我的问题是程序使用扫描仪获取用户输入，但我不知道如何从GUI向扫描仪获取输入。我知道如何在GUI的文本字段中使用getText（），但这并不更新扫描仪，以便主程序仅等待该输入，而不会继续。”

You are trying to do what is next to impossible. 您正在尝试做几乎不可能的事情。 The solution: correct your console class so that the user interface portion is separated out, a la MVC, so that the model can be used for either a console program or a GUI program. 解决方案：修改控制台类，以便将用户界面部分（例如MVC）分离出来，以便该模型可用于控制台程序或GUI程序。

So the simple answer is: don't try to do this. 因此，简单的答案是：不要尝试这样做。 Create a well behaved set of classes with decent separation of concerns so that you can re-use classes well. 创建具有良好关注点分离的行为良好的类集，以便您可以很好地重用类。