相关疑难解决方法(0)

这是我提供问题的代码.

package ca.rhinoza.game;

import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Dimension;

import javax.swing.JFrame;

public boolean running = false;


public class Game extends Canvas implements Runnable {

    private static final long serialVersionUID = 1L;

    public static final int WIDTH = 160;
    public static final int HEIGHT = WIDTH / 12 * 9;
    public static final int SCALE = 3;
    public static final String NAME = "Game";

    private JFrame frame;

    public Game(){
        setMinimumSize(new Dimension(WIDTH*SCALE, HEIGHT*SCALE));
        setMaximumSize(new Dimension(WIDTH*SCALE, HEIGHT*SCALE));
        setPreferredSize(new Dimension(WIDTH*SCALE, HEIGHT*SCALE));

        frame = new …