I have to convert a .log file into a nice and pretty HTML file with tables. Right now I just want to get the HTML header down. My current method is to println to file every single line of the HTML file. for example
p.println("<html>");
p.println("<script>");
etc. there has to be a simpler way right?
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Look at this Java HTML Generator library (easy to use). It should make generating the actual HTML muuuch clearer. There are complications when creating HTML with Java Strings (what happens if you want to change something like a rowspan?) that can be avoided with this library. Especially when dealing with tables.
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Printing raw HTML text as strings is probably the "easiest" (most straightforward) way to do what you're asking but it has its drawbacks (e.g. properly escaping the content text).
You could use the DOM (e.g. Document et al) interface provided by Java but that would hardly be "easy". Perhaps there are "DOM builder" type tools/libraries for Java that would simplify this task for you; I suggest looking at dom4j.
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There are many templating engines available. Have a look at https://stackoverflow.com/questions/174204/suggestions-for-a-java-based-templating-engine This way you can define a template in a txt file and have the java code fill in the variables.
How about using a JSP scriplet and JSTL?, you could create some custom object which holds all the important information and display it formatted using the Expression Language.