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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
I'm working on getting my database to talk to my Java programs.
38 Answers
38
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How can I convert a comma-separated string to an array?
...e you have elements in array, if you're expecting data from a server / database you will run into trouble since ''.split(',') has a length === 1 IE: ''.split(',') === ['']
– oportocala
Aug 2 '16 at 15:49
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When should I use RequestFactory vs GWT-RPC?
...ic, non-GWT-compatible, code inside your class. Because the RPC system is based on having the same concrete type on both the client and the server, you can hit a complexity wall based on the capabilities of your GWT client.
To get around the use of incompatible code, many users wind up creating a ...
git: fatal: Could not read from remote repository
...ccess.
Also it's possible to define rules for ssh in ~/.ssh/config, e.g. based on aliases:
Host github
HostName github.com
User git
IdentityFile "~/.ssh/id_rsa"
Host git
HostName github.com
User git
IdentityFile "~/.ssh/some_other_id"
You can set con...
How to mock a final class with mockito
...sults in error when running on Linux / OpenJDK 1.8: org.mockito.exceptions.base.MockitoInitializationException: Could not initialize inline Byte Buddy mock maker. (This mock maker is not supported on Android.)
– naXa
Mar 31 '19 at 15:14
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How to get the index of an item in a list in a single step?
...onditions defined by the specified predicate,
/// and returns the zero-based index of the first occurrence within the entire <see cref="IEnumerable{T}"/>.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="list">The list.</param>
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When to use , tag files, composite components and/or custom components?
...hnically, the performance concern is negligible. The choice should be made based on the concrete functional requirements and the final degree of abstraction, reusability and maintainability of the implementation. Each approach has its own well definied purpose and limitations.
Composite components d...
How do I remove the file suffix and path portion from a path string in Bash?
...flexible of all the answers posted, but I think the answers suggesting the basename and dirname commands deserve some attention as well. They may be just the trick if you don't need any other fancy pattern matching.
– mgadda
Dec 4 '12 at 2:08
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How do BitTorrent magnet links work?
...nd is followed by the format ( btih in this case) with a SHA1 hash. I saw base32 mentioned, knowing it's 5 bits per character and 32 characters, I found it holds exactly 160bits, which is exactly the size of the SHA1.
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Get IP address of visitors using Flask for Python
...re users can log on and download files, using the Flask micro-framework (based on Werkzeug ) which uses Python (2.6 in my case).
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