在没有静态变量的情况下共享 GUI 变量 [英] Sharing GUI variables without static variables

问题描述

目前我有一个图形用户界面，可以让用户选择程序应该如何运行:

Currently I have a GUI that has options for the user to select on how the program should run:

//Inside GUI.java, start button has clicked -> send all objects to Main class
private void startButtonClicked(MouseEvent e) {
    Main.setMain(selectedObj.getItemAt(selectedObj.getSelectedIndex()));
    Main.setOwnCar(userName.getText().trim());
    Main.enableNaps(weSleep.isSelected());
    Main.useOwnHouse(useOwnHouse.isSelected());
    if (weSleep.isSelected()) {
        Integer minSleep = (Integer) minVal.getValue();
        Integer maxSleep = (Integer) maxVal.getValue();
        Main.setSleepMinMax(minSleep, maxSleep);
    }
    setVisible(false);
}

当单击开始按钮时，我想将 GUI 中的所有变量传递到主类中.我知道怎么做的唯一方法是使用 getter/setter，但它们必须是静态的:

When the start button is clicked I want to pass all the variables from the GUI into the main class. The only way I knew how to do it was to use getter/setters but they have to be static:

static void setSleepMinMax(int min, int max) {
    sleepMin = min;
    sleepMax = max;
    Log("Sleeping debug: [min->" + min + "] [max->" + max + "]");
}

//Inside an infinite loop I have this which is at the top
//until the GUI is closed it does not start the rest of the program
if (gui.isVisible()) {
    Log("Waiting for GUI vars");
    return 1000;
}
if (!getOwnCar.isEmpty())
    Log("Using " + ownerCarName);

大多数人都说避免使用静态变量.如果我无法使用构造函数，因为我的主类始终在运行并且 GUI 只是一个可以打开以按需更改变量的窗口，那么正确的方法是什么?也许类似于 C++ 的引用传递?

Most say avoid static variables. What is the correct way if I am unable to use a constructor because my main class is always running and the GUI is just a window that can be opened to change variables on demand? Perhaps pass by reference similar to C++?

推荐答案

将它写入一个属性文件并从那里读取它.这样下次再次使用它时，他可以拥有以前的值.

Write it to a property file and read it from there.So that when next time one uses it again he can have the previous values.

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