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Textarea-retaining the text value in the textarea after clicking the back button

I have a textarea in a JSP that loses its text value after the back button of the browser is clicked.  I found the following not totally syntactically correct possible solution:

<% String inputtext = "";
if(textarea.getParameter() != "" && != null)
inputtext = text.getParameter();

//in HTML
<textarea name="textarea" rows="20" cols="20"<%=inputtext%></textarea>

Can someone provide a different way, agree that this way will work, or modify this way?
I'm not near my work PC where I can test this.
1 Solution
I'm not sure what you are asking here.  You press back button then you press forward button to return ? Is that what you are doing ?  Please restate your question in more detail.   Anyway here is proper JSP code.

     String inputtext = request.getParameter("testarea");
     if(textarea == null || "".equals(inputtext.trim())) inputtext = "none found";
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