can anyone helpe me solve this. I don't know how I can read an n byte field name, where n bytes come from s1 length of field name .
I am getting weird character output.
Welcome to the forum. I bet the bartender is going to ask you to change your name according to their naming policy. As to your question, I use a RandomAccessFile to read from an nth element. It also lets you specify the number of bytes to read.
If you are getting a weird character output, this may be due to the incorrect translation of the bytes into the correct character set. Try to use the new String(byte chars, Stirng characterSet) constructor for the String object.
Anton Golovin (firstname.lastname@example.org) SCJP, SCJD, SCBCD, SCWCD, OCEJWSD, SCEA/OCMJEA [JEE certs from Sun/Oracle]