Question

当我尝试运行我的代码时，Eclipse抱怨我的代码没有主要方法。我只是在Github上复制了一个.zip文件，用于编码类。有人可以告诉我这是什么问题吗？我已经问过我的老师，但他已经花了很长时间才回答。这是我的代码（它有点长，因为我不知道什么不包括:)：

bb.view.arena;

import bb.model.GameModel;
import bb.view.SpriteFactory;

import javax.swing.JComponent;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;

import static bb.BBConfig.*;

/**
 * Created by willie on 6/4/17.
 */

public class ArenaPane extends JComponent {
    private GameModel gameModel;
    private SpriteFactory spriteFactory;

    public ArenaPane(GameModel gameModel, SpriteFactory spriteFactory) {
        this.gameModel = gameModel;
        this.spriteFactory = spriteFactory;
    }

    @Override
    public Dimension getPreferredSize() {
        return ARENA_PANE_SIZE_PX;
    }

    @Override
    public void paint(Graphics g) {
        g.translate(ARENA_MARGIN_LEFT_RIGHT_PX, 0);
        doPaintBorder(g);
        g.translate(ARENA_BORDER_SIZE_PX, ARENA_BORDER_SIZE_PX);
        g.setClip(0, 0, ARENA_INNER_WIDTH_PX, ARENA_INNER_HEIGHT_PX);
        paintPlayer(g);
        g.translate(-ARENA_BORDER_SIZE_PX, -ARENA_BORDER_SIZE_PX);
        g.translate(-ARENA_MARGIN_LEFT_RIGHT_PX, 0);
    }

    private void doPaintBorder(Graphics g) {
        g.setColor(Color.YELLOW);
        g.fillRect(0, 0, ARENA_OUTER_WIDTH_PX, ARENA_OUTER_HEIGHT_PX);
        g.setColor(Color.BLACK);
        g.fillRect(ARENA_BORDER_SIZE_PX, ARENA_BORDER_SIZE_PX, ARENA_INNER_WIDTH_PX, ARENA_INNER_HEIGHT_PX);
    }

    private void paintPlayer(Graphics g) {

        // Note: Arena dimensions are 292 x 230.
        // drawImage() starts from the sprite's top-left corner.
BufferedImage lexi = spriteFactory.getLexi();
g.drawImage(lexi, 100, 100, 16, 16, null);
        // Step 1. Get the sprite from the sprite factory
        // TODO

        // Step 2. Draw the sprite on the screen
        // g.drawImage(image, x, y, width, height, null);
        // TODO
    }
}

谢谢， Svadrut

Answer 1

你有一个java Swing applet，它可以在任何安装了相应Java Plug-in版本的浏览器中运行，并且有两个选项可以运行它 -

通过html文件尝试：

<html>  
<body>  
<applet code="ArenaPane.class" width="300" height="300">  
</applet>  
</body>  
</html>

通过appletViewer工具（用于测试目的）要通过appletviewer工具执行applet，请在注释中创建包含applet标记的applet并进行编译。尝试：

/* 
<applet code="ArenaPane.class" width="300" height="300"> 
</applet> 
*/

要通过appletviewer工具执行applet，请在命令提示符下写入：

> c:\>javac ArenaPane.java

> c:\>appletviewer ArenaPane.java

Eclipse没有运行我的代码

1 个答案: