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How do I know the script file name in a Bash script?
How can I determine the name of the Bash script file inside the script itself?
23 Answers
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How to get exit code when using Python subprocess communicate method?
How do I retrieve the exit code when using Python's subprocess module and the communicate() method?
5 Answers
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How to send a stacktrace to log4j?
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try {
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} catch (Exception e) {
log.error( "failed!", e );
}
It's up to log4j to render the stack trace.
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How do you cast a List of supertypes to a List of subtypes?
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Simply casting to List<TestB> almost works; but it doesn't work because you can't cast a generic type of one parameter to another. However, you can cast through an intermediate wildcard type and it will be allowed (since you can cast to and from wildcard types, just with a...
Why do I get an UnsupportedOperationException when trying to remove an element from a List?
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Quite a few problems with your code:
On Arrays.asList returning a fixed-size list
From the API:
Arrays.asList: Returns a fixed-size list backed by the specified array.
You can't add to it; you can't remove from it. You ...
Amazon SimpleDB vs Amazon DynamoDB
...t Amazon SimpleDB is, but according to the Amazon DynamoDB description it seems to be almost the same: a NoSQL Key-value store service.
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How do you do a limit query in JPQL or HQL?
...Hibernate 3, is there a way to do the equivalent of the following MySQL limit in HQL?
14 Answers
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What is the reason why “synchronized” is not allowed in Java 8 interface methods?
In Java 8, I can easily write:
2 Answers
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Can I set an opacity only to the background image of a div?
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Nope, this cannot be done since opacity affects the whole element including its content and there's no way to alter this behavior. You can work around this with the two following methods.
Secondary div
Add another div element to the container to hold the back...
Which is the fastest algorithm to find prime numbers?
Which is the fastest algorithm to find out prime numbers using C++? I have used sieve's algorithm but I still want it to be faster!
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