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Any reason to clean up unused imports in Java, other than reducing clutter?
... the list interface.
In Eclipse you can always use a shortcut (depends on OS - Win: Ctrl + SHIFT + O and Mac: COMMAND + SHIFT + O) to organize the imports. Eclipse then cleans up the import section removes all the stale imports etc. If you are needing a imported thing again eclipse will add them au...
What's the difference between a catalog and a schema in a relational database?
...ews and domains of the
Information Schema.
Database Language SQL, (Proposed revised text of DIS 9075), p 45
From the SQL point of view :
A catalog is often synonymous with database. In most SQL dbms, if you query the information_schema views, you'll find that values in the "table_catalog" c...
Java 8 Streams: multiple filters vs. complex condition
...
@Juan Carlos Diaz: no, streams don’t work that way. Read about “lazy evaluation”; intermediate operations don’t do anything, they only alter the outcome of the terminal operation.
– Holger
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What is the difference between the states selected, checked and activated in Android?
I'd like to know what differs those states. I didn't find any webpage clarifying this.
3 Answers
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What is the garbage collector in Java?
...eating new objects, such as Strings and Files, but after a certain time, those objects are not used anymore. For example, take a look at the following code:
for (File f : files) {
String s = f.getName();
}
In the above code, the String s is being created on each iteration of the for loop. Thi...
Do HttpClient and HttpClientHandler have to be disposed between requests?
...d System.Net.Http.HttpClientHandler in .NET Framework 4.5 implement IDisposable (via System.Net.Http.HttpMessageInvoker ).
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When is the finalize() method called in Java?
...e readers) it is never called on the main class, as, when the main class closes, no garbage needs to be collected. The OS cleans up everything the app used anyway.
– Mark Jeronimus
May 7 '12 at 7:05
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What's the need of array with zero elements?
...have an incomplete array type; this is called a flexible array member. In most situations,
the flexible array member is ignored. In particular, the size of the structure is as if the
flexible array member were omitted except that it may have more trailing padding than
the omission would ...
What is RSS and VSZ in Linux memory management
... It does include memory from shared libraries as long as the pages from those libraries are actually in memory. It does include all stack and heap memory.
VSZ is the Virtual Memory Size. It includes all memory that the process can access, including memory that is swapped out, memory that is allo...
What are the most useful Intellij IDEA keyboard shortcuts? [closed]
I did a bit of googling hoping to find a post on IDEA shortcuts similar to Jeff's post on Visual Studio shortcuts ( Visual Studio .NET 2003 and 2005 Keyboard Shortcuts ), but didn't really spot anything that helped. Hopefully the answers to this question will fill the void.
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