基本作圖

程序:

import java.applet.Applet;
import java.awt.*;
public class hua extends Applet
{
    public void paint(Graphics c)
    {
        c.drawLine(0,120,160,140);            //直線起點X,Y;終點X,Y;
        c.drawRect(10,18,20,60);               //起點X,Y;矩形長,寬;
        c.fillRect(30,60,40,40);                  //實心矩形
        c.drawRoundRect(80,10,100,50,45,35); /             /起點X,Y,長,寬,長圓弧,寬圓弧
        c.drawOval(120,120,80,40);                   //X軸最左邊起點,Y軸最上邊起點,橢圓X軸長,橢圓Y軸寬
        c.fillOval(160,160,40,40);                   //實心橢圓
        c.drawOval(60,100,20,40);
        c.drawOval(100,100,20,40);
        drawMyPolygon(c);
        c.drawString("i love you!!!",100,200);
    }
    public void drawMyPolygon(Graphics c)   //自定義畫圖
    {
        int[] hx={0,20,35,89,97};                        //5頂點橫座標,
        int[] hy={100,140,127,10,201};             //5頂點縱座標
        c.drawPolygon(hx,hy,4);                        //畫4個頂點的多邊形
    }
} 

     總結:   

 該程序旨在教我們如何作出最基本的圖形,其中包括:直線,矩形,圓角矩形,,圓,橢圓,實心,空心圖形,還包括自定義作多邊形圖等,掌握這些最基本的作圖,重在掌握其方法的多個參數中,各個參數表示的意義,這樣纔可以作出準確精緻的圖形.