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Java: Subpackage visibility?

...s others have explained, there is no such thing as a "subpackage" in Java: all packages are isolated and inherit nothing from their parents. An easy way to access protected class members from another package is to extend the class and override the members. For instance, to access ClassInA in packa...
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How do servlets work? Instantiation, sessions, shared variables and multithreading

... servlet container (like Apache Tomcat) starts up, it will deploy and load all its web applications. When a web application is loaded, the servlet container creates the ServletContext once and keeps it in the server's memory. The web app's web.xml and all of included web-fragment.xml files is parsed...
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Should I impose a maximum length on passwords?

...t assume the worst and expect that this site is storing your password literally (i.e. not hashed, as explained by epochwolf). In that that is the case: Avoid using this site like the plague if possible. They obviously know nothing about security. If you truly must use the site, make sure your pas...
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boundingRectWithSize for NSAttributedString returning wrong size

...ng to get the rect for an attributed string, but the boundingRectWithSize call is not respecting the size I pass in and is returning a rect with a single line height as opposed to a large height (it is a long string). I have experimented by passing in a very large value for the height and also 0 as ...
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IllegalArgumentException or NullPointerException for a null parameter? [closed]

... one of those things that you should do whatever you prefer and both are really correct? 26 Answers ...
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Using the RUN instruction in a Dockerfile with 'source' does not work

I have a Dockerfile that I am putting together to install a vanilla python environment (into which I will be installing an app, but at a later date). ...
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Http Basic Authentication in Java using HttpClient?

...the builder while build the httpclient. Also I like it because it is per call scope. Not on the whole httpclient scope. – Tony Aug 15 '19 at 16:23 add a comment ...
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How can I detect the encoding/codepage of a text file

...itively Must Know About Unicode and Character Sets (No Excuses!). Specifically Joel says: The Single Most Important Fact About Encodings If you completely forget everything I just explained, please remember one extremely important fact. It does not make sense to have a string without knowi...
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How should I store GUID in MySQL tables?

... I could do the same thing in 4 bytes with an Integer. Since he put that challenge out there to me I thought now was a good time to mention it. That being said... You can store a guid as a CHAR(16) binary if you want to make the most optimal use of storage space. ...
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How to detect orientation change in layout in Android?

...ecreated when you switch to landscape. Instead, onConfigurationChanged is called. If this is undesired, you could use a variable to remember your activity's orientation and every time you go though onPause (for example) to check if the orientation is still the same. – Elena ...