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Best practice for creating millions of small temporary objects
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Run the application with verbose garbage collection:
java -verbose:gc
And it will tell you when it collects. There would be two types of sweeps, a fast and a full sweep.
[GC 325407K->83000K(776768K), 0.2300771 secs]
[GC 325816K->83372K(776768K), 0.2454258 secs]
[Full G...
Should I use an exception specifier in C++?
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@curiousguy. That's how Java does it because it checks are enforced at compile time. C++ are runtime checks. So: Guarantee that functions will only throw listed exceptions (possibly none). Not true. It only guarantees that if the function does throw...
JVM option -Xss - What does it do exactly?
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Each thread in a Java application has its own stack. The stack is used to hold return addresses, function/method call arguments, etc. So if a thread tends to process large structures via recursive algorithms, it may need a large stack for all...
How to use Servlets and Ajax?
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Indeed, the keyword is "ajax": Asynchronous JavaScript and XML. However, last years it's more than often Asynchronous JavaScript and JSON. Basically, you let JS execute an asynchronous HTTP request and update the HTML DOM tree based on the response data.
Since it's pr...
Can I use Class.newInstance() with constructor arguments?
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Seems like the answer is "no" for Java 1.1
– Jim
Jul 28 '16 at 11:13
I have p...
Eclipse error: “The import XXX cannot be resolved”
... also for me; it is not an hibernate project, but a libGdx one, calling my java imports and not jars. Same wondering of @SabreRunner, and also: there is a bug somewhere in the environment tools?
– Zac
Jul 19 '14 at 10:00
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Regular expression: find spaces (tabs/space) but not newlines
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Good point. Java's \h (introduced in Java 8) does include \u3000, but \s does not, unless you set UNICODE_CHARACTER_CLASS mode (introduced in Java 7).
– Alan Moore
Apr 19 '16 at 21:46
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What is the gain from declaring a method as static
... a first class Function concept that allows that, so static is not needed. Java 8 will have lambda expressions integrated, so we are moving into this direction already.
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Parcelable encountered IOException writing serializable object getactivity()
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Caused by: java.io.NotSerializableException: com.resources.student_list.DSLL$DNode
Your DSLL class appears to have a DNode static inner class, and DNode is not Serializable.
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Best practices for overriding isEqual: and hash
...ttribution is fair.
This algorithm was popularized in the book "Effective Java", and the relevant chapter can currently be found online here. That book popularized the algorithm, which is now a default in a number of Java applications (including Eclipse). It derived, however, from an even older i...