JavaSE基础 awt Graphics2D 生成矩形图片并向其中画一条直线

package com.jizuiku;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.imageio.ImageIO;

/**
 * 
 * 
 * @author 博客园-给最苦
 * @version V2017.11.30
 */
public class DrawLineDemo {

	public static void main(String[] args) {
		try {
			getImage();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

	public static void getImage() throws FileNotFoundException, IOException {
		// 得到图片缓冲区
		int width = 100;
		int height = 50;
		int imageType = BufferedImage.TYPE_INT_BGR;
		BufferedImage myImage = new BufferedImage(width, height, imageType);

		// 得到画笔
		Graphics2D pen = (Graphics2D) myImage.getGraphics();

		// 设置笔的颜色,即背景色
		pen.setColor(Color.WHITE);

		// 画出一个矩形
		// 坐标x 坐标y 宽度100 长度50
		pen.fillRect(0, 0, 100, 50);


		// 字的颜色 和 背景的颜色 要不同的
		pen.setColor(Color.blue);

		// 划线
		// 点动成线，线动成面，面动成体
		// 两点确定一条直线
		int xStart = 5;
		int yStart = 15;
		int xEnd = 60;
		int yEnd = 30;
		
		// 设置线的宽度
		float lineWidth = 7F;
		pen.setStroke(new BasicStroke(lineWidth));
		
		pen.drawLine(xStart, yStart, xEnd, yEnd);
		
		ImageIO.write(myImage, "JPEG", new FileOutputStream("E:\\" + "line" + ".jpg"));

	}

}