字节流复制图片

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyJpjDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("D:\\Java\\java作业\\myFile\\psc.png");
        FileOutputStream fos=new FileOutputStream("E:\\itcast\\psc.png");

        byte[] bys=new byte[1024];
        int len;
        while ((len=fis.read(bys))!=-1){
            fos.write(bys,0,len);
        }

        fis.close();
        fos.close();
    }
}