java的图片的切割

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import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageObserver;
import java.awt.image.ImageProducer;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class Test8
{
int width=300;
int height=300;
int col;
int row;
File file;
ImageProducer sourse;
Test8()
{
file=new File("j.jpeg");
try {
BufferedImage bi=ImageIO.read(file);
int swidth=bi.getWidth();
int sheight=bi.getHeight();
Image suo=bi.getScaledInstance(swidth, sheight,bi.SCALE_DEFAULT);
sourse=suo.getSource();
// 得到图形像素对象
if(swidth%width==0){
col=swidth/width;
}else{
col=swidth/width+1;
}
if(sheight%height==0){
row=sheight/height;
}else{
row=sheight/height+1;
}
for(int i=0;i<row;i++){
for(int j=0;j<col;j++){
CropImageFilter cif=new CropImageFilter(j*width,i*height,width,height);
FilteredImageSource fis=new FilteredImageSource(sourse,cif);
Image image=Toolkit.getDefaultToolkit().createImage(fis);
BufferedImage bb=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
bb.getGraphics().drawImage(image,0,0,null);
ImageIO.write(bb,"jpg",new File(String.valueOf(i)+String.valueOf(j)+".jpg"));
System.out.println(i+" "+j+"成功");
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args)
{
new Test8();
}
}