Writing a file in binary or bytecode

I am storing large amounts of information inside of text files that are writte开发者_如何学运维n via java. I have two questions relating to this:

1. Is there any efficiency boost to writing in binary or bytecode over Strings?

2. What would I use to write the data type into a file.

I already have a setup based around Strings, but I want to compare and at least know how to write the file in bytecode or binary.

When I read in the file, it will be translated into Strings again, but according to my reasearch if I write the file straight into bytecode it removes the added process on both ends of translating between Strings and code both for writing the file and for reading it.

---

cHao has a good point about just using Strings anyway, but I am still interested in the how if how to write varied data types in the file.

In other words, can I still use the FileReader and BufferedReader to read and translate back to Strings, or is there another thing to use. Also using a BinaryWriter, is it still just the FileWriter class that I use???

---

If you want to write it in "binary", and you want to save space, why not just zip it using the jdk? Meets all your requirements.