无法解析导入自定义JFrame和JPanel类

Question

我尝试清理我的项目以解决这个问题并查找论坛和stackoverflow以获得解决方案但是我无法找到错误显示原因的答案。我只是将我的类导入到Actual_Game类中。错误是“导入FrameCreator无法解析”。我正在使用Eclipse作为我的IDE。

这是代码： Actual_Game.java

import FrameCreator;//<---error here

public class Actual_Game {
    public static void main(String[] args) {
        FrameCreator local_fc = new FrameCreator();
        local_fc.CreateGameWindow();
    }
}

FrameCreator.java

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Toolkit;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;

public class FrameCreator extends JPanel {
    private static final long serialVersionUID = 1L;
    /*      Settings      */
    /*      get screen size using the Toolkit class before setting it into height & width       */
    static Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    final String title = "Example Title";
    final static int window_height = (int)(screenSize.getHeight()*.75),
                     window_width = (int)(screenSize.getWidth()/2);
    public FrameCreator(){
        setBackground(Color.BLACK);
        CreateGameWindow();
    }
    public void CreateGameWindow(){
        /*    This section creates the window     */
        /*    set the title of the screen     */
        JFrame archizzleFrame = new JFrame();
        /*    sets the size of the frame     */
        archizzleFrame.setSize(window_width,window_height);
        /*    we tell what to do when user presses "X"     */
        archizzleFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        /*    sets visibility of the window     */
        archizzleFrame.setVisible(true);
    }
}

它们位于相同的文件夹/包下，如下所示。

我该如何解决这个问题？