关于Image的几个问题

Question

BufferedImage ImageNew = 
        new BufferedImage (width,height,BufferedImage.TYPE_INT_RGB); 
ImageNew.setRGB(0,0,width,height,ImageArrayOne,0,width);
File outFile = new File(".\\RU002out2.bmp");
ImageIO.write(ImageNew, "png", outFile);//写图片
这种方法可以向硬盘中写图片。

Answer 1

public static BufferedImage GetImage(String checkrnd) {
        BufferedImage image = new BufferedImage(12 * (checkrnd.length()+1),
                                                24, BufferedImage.TYPE_INT_RGB);        try {
           // File out = new File("d:\\image.jpg");
            Graphics g = image.getGraphics();
            g.setColor(new Color(38,80,166));
            g.fillRect(0, 0, 12 * (checkrnd.length()+1), 24);
            g.setColor(Color.WHITE);
            Font font = g.getFont().deriveFont((float)20);
            g.setFont(font);
            g.drawString(checkrnd, 6, 20);
            g.dispose();
            //ImageIO.write(image, "JPEG", out);        }
        catch (Exception e) {
            e.printStackTrace();
        }
        return image;
    }

Answer 2

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.ImageIO;public class ImageTest
{
public static void main(String args[])
{
        BufferedImage image = new BufferedImage(600,
                                                800, BufferedImage.TYPE_INT_RGB);        try 
        {
            File out = new File("d:\\image.jpg");
            Graphics g = image.getGraphics();
            Graphics2D g2 = (Graphics2D)g;
            g2.setColor(Color.white);
            g2.fillRect(0, 0, 600, 800);
            g2.setColor(Color.black);
            Font font = g.getFont().deriveFont((float)20);
            g2.setFont(font);
            g2.drawString("Here", 20, 50);
            g2.drawLine(10, 10, 10, 790);
            g2.drawLine(10, 10, 590, 10);
            g2.drawLine(10, 790, 590, 790);
            g2.drawLine(590, 10, 590, 790);
            g2.dispose();
            ImageIO.write(image, "JPEG", out);        }
        catch (Exception e) 
        {
            e.printStackTrace();
        }
    }
}