import *;
public class m5{
public static void main
(String[]args)throws  
Exception{
BufferedInputStream  
hcfz=new  
BufferedInputStream
(new FileInputStream  
("D:/cf/java/1.rmvb"));
BufferedOutputStream  
hczt=new  
BufferedOutputStream
(new FileOutputStream  
("D:/cf/2.rmvb"));
byte[] hc=new byte
[2048];
int ff;
ff=hcfz.read(hc);




while (-ff!=(-1))
{
hczt.write(hc,0,ff);
ff=hcfz.read(hc);


}
hczt.flush();
hczt.close();
hcfz.close();



}
}
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
        at java.lang.System.arraycopy(Native Method)
        at (Unknown Source)
        at m5.main(m5.java:17)