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How to gracefully handle the SIGKILL signal in Java
...hutdown hooks.
Registers a new virtual-machine shutdown hook.
The Java virtual machine shuts down in response to two kinds of events:
The program exits normally, when the last non-daemon thread exits or when the exit (equivalently, System.exit) method is invoked, or
The virtual ma...
Covariance, Invariance and Contravariance explained in plain English?
... I read some articles about Covariance, Contravariance (and Invariance) in Java. I read the English and German Wikipedia article, and some other blog posts and articles from IBM.
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How to convert an Int to a String of a given length with leading zeros to align?
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The Java library has pretty good (as in excellent) number formatting support which is accessible from StringOps enriched String class:
scala> "%07d".format(123)
res5: String = 0000123
scala> "%07d".formatLocal(java.util.L...
How do I enable TODO/FIXME/XXX task tags in Eclipse?
...You can configure which task tags should be used in the workspace options: Java > Compiler > Task tags
Check if they are enabled in this location, and that should be enough to have them appear in the Task list (or the Markers view).
Extra note: reinstalling Eclipse won't change anything mo...
Best way to work with dates in Android SQLite [closed]
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Always make sure to store the UTC/GMT time, especially when working with java.util.Calendar and java.text.SimpleDateFormat that use the default (i.e. your device's) time zone.
java.util.Date.Date() is safe to use as it creates a UTC value.
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Java: Static vs inner class [duplicate]
... look in the source of wisdom for such questions: Joshua Bloch's Effective Java:
Technically, there is no such thing as a static inner class. According to Effective Java, the correct terminology is a static nested class. A non-static nested class is indeed an inner class, along with anonymous class...
Change priorityQueue to max priorityqueue
I have priority queue in Java of Integers:
16 Answers
16
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How exactly does the android:onClick XML attribute differ from setOnClickListener?
...ut elements -->
In the background, Android does nothing else than the Java code, calling your method on a click event.
Note that with the XML above, Android will look for the onClick method myFancyMethod() only in the current Activity. This is important to remember if you are using fragments, ...
How to get a path to a resource in a Java JAR file
...nto individual files in the file system.
Anything you can do by getting a java.io.File could be done by copying the stream out into a temporary file and doing the same, if a java.io.File is absolutely necessary.
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Overloaded method selection based on the parameter's real type
...meter type. Am I missing
something?
Yes. Your expectation is wrong. In Java, dynamic method dispatch happens only for the object the method is called on, not for the parameter types of overloaded methods.
Citing the Java Language Specification:
When a method is invoked (§15.12), the
numb...