Question

This is pretty elementary but I do not even know how to search anything for what I need. I have created a system that has a few classes and two projects that communicate with each other via sockets.

现在,我的目标是用设计师Netbeans(Netbeans)为这个系统创建一个图形用户界面(GUI),

Should the GUI be my main class?
If not, how do I send messages to my GUI class.
When I try to do the following e.g JTextField.setText("PleaseHelp"); in the run method of the GUI I get an error saying : non-static variable JTextField cannot be referenced from a static context.

我知道我没有要求具体的东西,但我对如何寻找我需要的东西一无所知。我得到的只是关于如何制作简单的计算界面的辅导,因为只有一个类,即JFrame 。

Answer 1

It would be better if the GUI were a separate class, since a modularized application is more maintainable.
As with all object oriented code, you need a reference to an instance of the GUI class.
JTextField is a class and setText is not static. You need to reference the JTextField that you want to change.

基本上,它应该看起来是这样的:

GUI gui = new GUI(/*Parameters*/);
gui.getTextField().setText("PleaseHelp");

getTextFriel 是 GUI 类的一种方法( 添加到由 Netbeans GUI 设计师创建的类) :

public JTextField getTextField(){
  return /*TODO:  Enter text field name here*/;
}

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