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CATALINA_OPTS vs JAVA_OPTS - What is the difference?

I was trying to find out the difference between Apache Tomcat variables - CATALINA_OPTS and JAVA_OPTS in SO and surprised to see that there is no question/answer posted here yet. So I thought of sharing it here (with answer) after finding out the difference. Check the answer/difference below...
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Rails - Nested includes on Active Records?

I have a list of events that I fetch. I'm trying to include every user associated to this event and every profile associated to each user. The Users get included but not their profiles. ...
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How to compare two files not in repo using git

...ke to compare two css files which are not in any git repository. Is there such a functionality in git? 3 Answers ...
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Checking if a folder exists (and creating folders) in Qt, C++

In Qt, how do I check if a given folder exists in the current directory? If it doesn't exist, how do I then create an empty folder? ...
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Namespace for [DataContract]

I can't find the namespace to use for [DataContract] and [DataMember] elements. According to what I've found, it seems that adding the following should be enough, but in my case it is not. ...
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BigDecimal setScale and round

... One important point that is alluded to but not directly addressed is the difference between "precision" and "scale" and how they are used in the two statements. "precision" is the total number of significant digits in a number. "scale" is the number of d...
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In Gradle, is there a better way to get Environment Variables?

...ll; this works as well: home = "$System.env.HOME" It's not clear what you're aiming for. share | improve this answer | follow | ...
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Newline in markdown table?

... Use <br> to force a line break within a table cell. Markdown Extra and MultiMarkdown allow tables, but after trial and error, it seems an HTML line break is needed in this case. ...
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running Rails console in production

I have just gone live with my first Rails site, but now I have a problem. When I run the project in development mode on my IDE I can run the console to something like: ...
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Size of font in CSS with slash

... This actually sets two properties and is equivalent to: font-size: 100%; line-height: 120%; To quote the official documentation: The syntax of this property is based on a traditional typographical shorthand notation to set mul...