I need to insert an eof into a string

Question

I am using RandomAccessFile and I need to insert an EOF into a String manually. Any tips on how to do this? Here is a snippet of the code.
origF.seek(0);
replacement = "The stuff I want in the file.";
replacement = replacement + ??????;  //(to indicate an EOF for the file)
origF.writeBytes(replacement);
origF.close();

Answer 1

I found my way. Take a look in this piece of code.
    vlWrite.seek( vlPresentEntryPoint );  // position the file
    vlWrite.writeBytes( vpNewString );    // writes the new string
    vlWrite.writeBytes( vlSavedData );    // writes remaing file content
    vlWrite.setLength( vlFileLength );    // redifines file length
    vlWrite.close();I'm planning to share my code(s) in the forum. But me first make a concerning question. I'm new in Java and came to this forum to find and give help when I can. But, it is a forum where people wants to help and share or what ?????
JJLobo