storing the data from jco.table toByteArray using Jco in java programming

hi

I want to store the data from Jco.table to ByteArray using jco

I a trying with this but i am getting follwing exception

java.lang.ArrayIndexOutOfBoundsException: 1

at com.sap.mw.jco.JCO$Record.getByteArray(JCO.java:12859)

at com.example.Downloaad.main(Downloaad.java:41)

this is at t=(byte[])test.getByteArray(i);

File f =new File("c:/testing.doc");

java.io.FileOutputStream fout=new java.io.FileOutputStream(f);

byte[]t=null;

System.out.println(test.getCapacity());

for(int i=0;i<test.getNumRows();i++)

{

t=(byte[])test.getByteArray(i);

test.nextRow();

}

for(int j=0;j<t.length;j++)

{

fout.write(t[j]); }