使用Java的图形为一个小程序时，你可以提高生产线的厚度？我不相信的BasicStroke工作 [英] Can you increase line thickness when using Java Graphics for an applet? I don't believe that BasicStroke works

问题描述

我有麻烦调整线条粗细。我可以这样做，在图形或做我必须做的Graphics2D的？如果是这样，我怎么修改程序，使其运行？

谢谢！

 进口java.applet.Applet中;
进口java.awt中的*。公共类myAppletNumberOne扩展的Applet {
    公共无效漆（图形页）{
        //这里的东西？
    }
}
 

解决方案

是的，你必须这样做在的Graphics2D，但几乎没有一个问题，因为在Swing中的每个图形是一个Graphics2D对象（它只是让老接口的兼容性原因）。

 公共无效的paintComponent（图形G）{    super.paintComponent方法（G）;
    Graphics2D的G2 =（Graphics2D的）克;
    g2.setStroke（新的BasicStroke（3））;
    g2.drawLine（...）; //厚
    ...}
 

正如你所看到的，g2.setStroke（...）允许您更改行程，甚至有一个的BasicStroke它提供简单线条宽度选择。

I am having trouble adjusting line thickness. Can I do that in Graphics or do i have to do it in Graphics2D? If so, how do I alter the program to make it run?

Thanks!

import java.applet.Applet;
import java.awt.*;

public class myAppletNumberOne extends Applet {
    public void paint (Graphics page) {
        //Something here???
    }
}

解决方案

Yes you have to do it in Graphics2D, but that's hardly an issue, as every Graphics in Swing is a Graphics2D object (it just keeps the old interface for compatibility reasons).

public void paintComponent(Graphics g) {

    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D) g;
    g2.setStroke(new BasicStroke(3));
    g2.drawLine(...);   //thick
    ...

}

As you can see, the g2.setStroke(...) allows you to change the stroke, and there's even a BasicStroke which provides for easy line width selection.

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