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How to generate and validate a software license key?
...t'll be available for downloading and installing for free but in a very limited version. To get access to all the features the user has to pay a license fee and receive a key. That key will then be entered into the application to "unlock" the full version.
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Why do I need to override the equals and hashCode methods in Java?
...), which will prevent your class from functioning properly in conjunction with all hash-based collections, including HashMap, HashSet, and Hashtable.
Let's try to understand it with an example of what would happen if we override equals() without overriding hashCode() and attempt to use a Map.
Say w...
list.clear() vs list = new ArrayList(); [duplicate]
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It's hard to know without a benchmark, but if you have lots of items in your ArrayList and the average size is lower, it might be faster to make a new ArrayList.
http://www.docjar.com/html/api/java/util/ArrayList.java.html
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Unicode characters in URLs
...ing. Modern browsers will take care of display & paste issues and make it human-readable. E. g. http://ko.wikipedia.org/wiki/위키백과:대문
Edit: when you copy such an url in Firefox, the clipboard will hold the percent-encoded form (which is usually a good thing), but if you copy only a p...
Difference between natural join and inner join
...follow
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edited Sep 1 '19 at 9:11
answered Jan 1 '12 at 23:51
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HTTP Error 503, the service is unavailable
...rvers in general. I've got IIS 8 on Windows 8, and I'm trying to set up a little site locally, while doing some development. In IIS I choose Add Site, give a name, points to a location where I have a index.html file (I've tried different locations, latest in a c:\inetpub\wwwroot\test -folder) and ...
node.js remove file
How do I delete a file with node.js?
16 Answers
16
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Recommended Vim plugins for JavaScript coding? [closed]
I'm new to JS & Vim. Which plugins would help me to write Javascript code?
5 Answers
5...
How to pre-populate the sms body text via an html link
How to use an html link to open the sms app with a pre-filled body?
20 Answers
20
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Java Embedded Databases Comparison [closed]
...e of the available products , but I can't decide which one would be more suitable for me. H2 , HSQLDB , Derby and Berkeley DB seem to be good candidates, but I still don't see how they compare to each other. I appreciate your help comparing them and helping me decide which one to use.
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