java - 在程序中使用多个 Canvas (不同时)是错误/不好的吗？

Question

所以我对 Java 和编程(4 个月)还很陌生，我正在尝试制作一个带有菜单的基本贪吃蛇游戏。我通过在框架上添加和删除它们来在每个不同的组件之间切换。这是代码:

public class screen extends Frame {
private static final long serialVersionUID = 1L;
private static screen f;
private static menu ex;
private static loadsettings settings;
public screen(String frameLabel, int width, int height) {
    setSize(width, height);
    setLocation(50,50);
    setResizable(true);
    setUndecorated(true);
    setVisible(true);  
}

public static void main(String[] args){
    settings = new loadsettings();      
    f = new screen("Game", settings.getWindowWidth(), settings.getWindowHeight());
    ex = new menu(f,settings); 
    f.add(ex);
    ex.createBufferStrategy(2);
    ex.requestFocus();
}
public static void new1Player(){
    f.setSize(400,400);
    f.removeAll();
    player1 ex = new player1(f,settings);
    f.add(ex);
    ex.createBufferStrategy(2);
    ex.requestFocus();
}
public static void new2Player(){
    f.setSize(600,600);
    f.removeAll();
    player2 ex = new player2(f,settings);
    f.add(ex);
    ex.createBufferStrategy(2);
    ex.requestFocus();
}
public static void newMenu(){
    f.setSize(400,400);
    f.removeAll();
    menu ex = new menu(f,settings);
    f.add(ex);
    ex.createBufferStrategy(2);
    ex.requestFocus();
}
}

问题是，每个组件都是一个 Canvas，因此它们会不断地被添加和删除。我只是想知道，这是糟糕的编码吗？有没有更好的方法来做到这一点？谢谢。

Answer 1

阅读有关使用 CardLayout 的信息.

A CardLayout object is a layout manager for a container. It treats each component in the container as a card. Only one card is visible at a time, and the container acts as a stack of cards. The first component added to a CardLayout object is the visible component when the container is first displayed.

您可以根据需要使用 Canvas，但没有理由不能只使用 Panel。