Creating Text files with special characters

I have a problem writing and then reading special characters in a text file. I am using FileWriter and FileReader and once I write (using FileWriter) in a file.txt many characters with ASCII code less than 31, I can not read them back using FileRead. I simply get a content which is different from the one originally written.
Does anyone have an idea about this problem ?

The code is OK, problems may have occured during copy/paste. But in the original code it is written c.
Here is a copy of the output of those lines that i'm talking about:
Here is the ASCII Code >> 125
Here is the ASCII Code >> 126
Here is the ASCII Code >> 127
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 63
Here is the ASCII Code >> 160
Here is the ASCII Code >> 161
Here is the ASCII Code >> 162

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