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What is the easiest way to ignore a JPA field during persistence?
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edited Dec 20 '13 at 7:14
Andrey Atapin
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What is the purpose of flush() in Java streams?
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102
From the docs of the flush method:
Flushes the output stream and forces any buffered outpu...
SQL join: selecting the last records in a one-to-many relationship
...n StackOverflow.
Here's how I usually recommend solving it:
SELECT c.*, p1.*
FROM customer c
JOIN purchase p1 ON (c.id = p1.customer_id)
LEFT OUTER JOIN purchase p2 ON (c.id = p2.customer_id AND
(p1.date < p2.date OR (p1.date = p2.date AND p1.id < p2.id)))
WHERE p2.id IS NULL;
Explana...
How can I load storyboard programmatically from class?
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answered Mar 27 '12 at 20:12
James BeithJames Beith
5,54133 gold badges2323 silver badges2121 bronze badges
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How do I speed up the scroll speed in a JScrollPane when using the mouse wheel?
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192
You can try this :
myJScrollPane.getVerticalScrollBar().setUnitIncrement(16);
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How do I run Asynchronous callbacks in Playground
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187
While you can run a run loop manually (or, for asynchronous code that doesn't require a run lo...
How can I sort a List alphabetically?
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13 Answers
13
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Java logical operator short-circuiting
...ator & and will throw a NullPointerException if input is null, but the 1st version will return false without an exception.
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