IO、绘制图形、包括（common-io依赖配置、画布、画笔、和有填充无填充的直线、弧线、矩形、多边形、圆形、半圆、太极、3D图等）

依赖common-io配置如下

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cn.wzt</groupId>
    <artifactId>08io</artifactId>
    <packaging>pom</packaging>
    <version>1.0</version>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </properties>
    <dependencies>
        <!--commons-i0-->
        <!--一种新的io操作方式-->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.11.0</version>
        </dependency>
    </dependencies>

</project>

代码如下：

/*
 * Copyright (c) 2006 - 2022, wzt.cn All rights reserved.
 *
 */
package cn.wzt;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Random;

/**
 * <p>Project: app2022 - Img1
 * <p>Powered by lenovo on 2022-01-21 08:46
 * <P>Created by IntelliJ IDEA
 *
 * @author lenovo
 * @version 1.0
 * @since 17
 */
public class Img1 {
    public static BufferedImage bi;
    public static Graphics2D g;

    public static void main(String[] args) {
        //imageType()画布样式1 真彩 2 透明度 10 灰度
        bi = new BufferedImage(1000, 1000, 1);
        //建立画笔
        g = bi.createGraphics();
        //设置线条和文件的，抗锯齿（平滑）
        g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT);
        //设置画笔颜色
//        g.setColor(Color.WHITE);
        g.setColor(new Color(255,0,0,200));//r g b 表示颜色，a 表示透明度
//        g.setStroke(new BasicStroke(5));//设计画笔的粗细
        //画一条直线
        g.drawLine(500,0,500,1000);//x1,y1 表示起点坐标；x2,y2 表示终点坐标
        g.drawLine(0,500,1000,500);
        juxing();
        duobianxing();
        huxing();
        taiji();
        g.dispose();//释放画笔
        try {
            //将bi写入img.jpg
            ImageIO.write(bi,"jpg",new File("img.jpg"));
            //调用系统命令查看img.jpg
            Runtime runtime = Runtime.getRuntime();
            runtime.exec("cmd /k start img.jpg");
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    /**
     * @Description: 画矩形操作
     * @Param: []
     * @return: void
     * @Author: wzt
     * @Date: 2022/1/21 13:14
     */
    public static void juxing(){
        g.setColor(Color.ORANGE);
        //画一条直线
        g.drawLine(250,0,250,500);//x1,y1 表示起点坐标；x2,y2 表示终点坐标
        g.drawLine(0,250,500,250);
        //画一个无填充矩形,注：draw无填充，fille有填充
        g.drawRect(200,200,100,100);
        //画一个填充矩形
        g.fillRect(225,225,50,50);
        //画一个圆角矩形
        g.drawRoundRect(25,25,150,150,50,50);
        g.fillRoundRect(325,25,150,150,150,150);
        //画一个3D矩形
//        g.setColor(Color.GRAY);
//        g.fillRect(0,0,500,500);
        g.draw3DRect(25,325,150,150,true);
        g.draw3DRect(325,325,150,150,false);
    }

    /**
     * @Description:多边形操作
     * @Param: []
     * @return: void
     * @Author: wzt
     * @Date: 2022/1/21 13:51
     */
    public static void duobianxing(){
        g.setColor(Color.ORANGE);
        //画一条直线
        g.drawLine(750,0,750,500);//x1,y1 表示起点坐标；x2,y2 表示终点坐标
        g.drawLine(500,250,1000,250);
        int[] x = {850,800,700,650,650,700,800,850};
        int[] y = {200,150,150,200,300,350,350,300};
//        Polygon polygon1 = new Polygon();
//        polygon1.addPoint(50, 10);
//        polygon1.addPoint(90, 50);
//        polygon1.addPoint(10, 50);
//        g.drawPolygon(polygon1);
//        g.setColor(Color.yellow);
        Polygon polygon2 = new Polygon(x, y, 8);
        g.drawPolygon(polygon2);
    }

    /**
     * @Description: 圆、弧线操作
     * @Param: []
     * @return: void
     * @Author: wzt
     * @Date: 2022/1/21 14:24
     */
    public static void huxing(){
        g.setColor(Color.ORANGE);
        //画一条直线
        g.drawLine(250,500,250,1000);//x1,y1 表示起点坐标；x2,y2 表示终点坐标
        g.drawLine(0,750,500,750);
        //圆
        g.drawOval(200,700,100,100);
        //椭圆
        g.drawOval(25,575,200,100);
        //弧线
        g.drawArc(225,550,200,200,0,90);
        //左半圆
        g.fillArc(25,775,200,200,90,180);
        //右半圆
        g.fillArc(275,775,200,200,-90,180);
    }

    /**
     * @Description: 太极
     * @Param: []
     * @return: void
     * @Author: wzt
     * @Date: 2022/1/21 14:52
     */
    public static void taiji(){
        //背景
        g.setColor(Color.ORANGE);
        g.fillRect(500,500,500,500);
        //大白半圆
        g.setColor(Color.white);
        g.fillArc(550,550,400,400,90,180);
        //大黑半圆
        g.setColor(Color.BLACK);
        g.fillArc(550,550,400,400,-90,180);
        //中白圆
        g.setColor(Color.white);
        g.fillOval(650,550,200,200);
        //中黑圆
        g.setColor(Color.BLACK);
        g.fillOval(650,750,200,200);
        //小白圆
        g.setColor(Color.white);
        g.fillOval(700,800,100,100);
        //小黑圆
        g.setColor(Color.BLACK);
        g.fillOval(700,600,100,100);
    }
}

效果图如下：