New to Java

Hello Suners,

i need to know how to extract text from a pdf file?
does anyone know what is the character encoding in pdf file, when i use an input stream to read the file it gives encrypted characters not the original text in the file.
is there any procedures i should do while reading a pdf file,

File f=new File("D:/File.pdf");
			FileReader fr=new FileReader(f);
			BufferedReader br=new BufferedReader(fr);
			String s=br.readLine();

any help will be deeply appreciated.