紧急求援！！！java初学者的小问题！！！！马上给分！！

[wzbroom]

下面的代码，不知道是因为import包的问题还是其他什么问题，在eclipse中ShapePanel LineMaker() RectangleMaker() RoundRectangleMaker() EllipseMaker() ArcMaker() PolygonMaker() QuadCurveMaker() CubicCurveMaker() ShapeMaker 均无法解析为类型，只要高手及时指教，本人必给高分！


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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ShapeTestFrame extends JFrame {
public ShapeTestFrame()
{
setTitle("ShapeTest");
setSize(WIDTH, HEIGHT);

Container contentPane = getContentPane();

final ShapePanel panel = new ShapePanel();
contentPane.add(panel, BorderLayout.CENTER);
final JComboBox comboBox = new JComboBox();
comboBox.addItem(new LineMaker());
comboBox.addItem(new RectangleMaker());
comboBox.addItem(new RoundRectangleMaker());
comboBox.addItem(new EllipseMaker());
comboBox.addItem(new ArcMaker());
comboBox.addItem(new PolygonMaker());
comboBox.addItem(new QuadCurveMaker());
comboBox.addItem(new CubicCurveMaker());
comboBox.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
ShapeMaker shapeMaker =
(ShapeMaker)comboBox.getSelectedItem();
panel.setShapeMaker(shapeMaker);
}
});
contentPane.add(comboBox, BorderLayout.NORTH);
}

private static final int WIDTH = 300;
private static final int HEIGHT = 300;
}

[yiyi2007]

好像有Shape类，也有Panel类，没有ShapePanel这个类，是你自定义的吗？

[kevinliuu]

确定ShapeMaker能被编译器加载吗

[wzbroom]

我是在调试java教程上的程序，可是总是出现这样的问题，我很是郁闷！！！

[wzbroom]

您可以在eclipse上调试一下，我没有进过任何改动

[CrazyGou]

ShapePanel LineMaker() RectangleMaker() RoundRectangleMaker() EllipseMaker() ArcMaker() PolygonMaker() QuadCurveMaker() CubicCurveMaker() ShapeMaker
这些都是自定义的类，你确定你写了或者导入这些类了吗？

[wzbroom]

对了，教程中后面还有具体的实现这些类的方法，可我不知道怎样在eclipse中实现，请赐教！！