SCJP Book, IO section: Is this a typo or is there a reason it would look like this?

Posted by iamchuckb on Stack Overflow See other posts from Stack Overflow or by iamchuckb
Published on 2010-05-14T18:27:02Z Indexed on 2010/05/14 18:44 UTC
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My question is about line 4, where the new PrintWriter is created with the constructor taking the FileWriter fw as a parameter. I don't understand the use of chaining the BufferedWriter bw to FileWriter if it isn't used later on in the actual writing. Can Java apply chaining in a way that bw still somehow affects the rest of the program?

16.         try {
17.             FileWriter fw = new FileWriter(test);
18.             BufferedWriter bw = new BufferedWriter(fw, 1024);
19.             PrintWriter out = new PrintWriter(fw);
20.             out.println("<html><body><h1>");
21.             out.println(args[0]);
22.             out.println("</h1></body></html>");
23.             out.close();
24.             bw.close();
25.             fw.close();
26.         }catch(IOException e) {
27.             e.printStackTrace();
28.         }

I think it is probably a typo and they meant to use bw as the parameter for PrintWriter out but like the title says, I'm new to this.

Thanks to all in advance.

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