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    You're lucky. Juding from the questions that still regularly pop up on Stack Overflow, some people are still stuck with Java 1.4 (a platform that's 11 years old!). Commented Jul 16, 2013 at 5:14
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    Why are you doing the upgrade now if you don't already know of some features in 7 that you need? Maybe you are wasting your time and should think about bit more about whether you should justify it rather than how you should justify it. Commented Jul 16, 2013 at 10:51
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    Is it just me or is the title backwards ? Commented Jul 16, 2013 at 15:08
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    The bigger question is: Why are you having such a hard time upgrading? I was able to upgrade a million loc project in a week to Java 7. I think the answer to your problems is analyzing why you are having such a hard doing the upgrade. Commented Jul 16, 2013 at 15:09
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    @ Andrew Finnell : Sorry. I did not think it was that relevant. The actual porting was completed in less than a week. Mainly due to sun proprietary api's we used. It was a function specific compatibility affected code than actual number of lines of code( 4million approx). The delay caused was due to various factors like tools support- For example code coverage using cobertura 2.0. is just stabilizing. Another tool was Rational Functional Tester which required an upgrade (we chose not to do). May be I will write a note on overall factors affected the effort.. Commented Jul 16, 2013 at 15:16