Question

报错he constructor GrayFilter() is undefined如何改？问题小白，新手请谅解

public class imagess extends JFrame
{
Image source,gray,gray3,clip,bigimg;
BufferedImage bimg,gray2;
GrayFilter filter,filter2;
ImageIcon ii;
ImageFilter cropFilter;
int iw,ih;

public void GrayImage() {
ii=new ImageIcon ("F:\\weiwenling\\untitled3.jpg");
source=ii.getImage();
iw=source.getWidth(this);
ih=source.getHeight(this);
filter=new GrayFilter();
filter2=new GrayFilter(GrayModel.CS_FLOAT);

Answer 1

GrayFilter(); 应该是你这个构造函数没有定义， 添加一个没有参数的构造函数就可以了