java servlet printwriter API insert string at some position

Question

I am using PrintWriter in one my servlet to flush html like below

PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("</head>");
out.println("<body>");
out.println("</body>");
out.println("</html>");

Say now i want to insert one line in html body. Is there a way to insert the data at some specific line at later stage or we have to go sequentially.

score 1 · Answer 1 · edited May 23 '17 at 12:08

It's not possible to insert lines.

If you really want to produce HTML pages this way (via PrintWriter and println()), you can create a String that contains something like a Template:

String template = "<html><head></head> <body> <p>__PLACEHOLDER1__</p> <p>__PLACEHOLDER2__</p> ... </body></html>";

During execution you replace the placeholders whenever you want.

Another way: you clean the buffer as described here and restart the output over all.

But I suggest to create the HTML via JSP, JSF or something like that

java servlet printwriter API insert string at some position

1 Answers1