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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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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...
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 remove all white spaces in java [duplicate]
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java.lang.String class has method substring not substr , thats the error in your program.
Moreover you can do this in one single line if you are ok in using regular expression.
a.replaceAll("\\s+","");
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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...
Removing an element from an Array (Java) [duplicate]
...here any fast (and nice looking) way to remove an element from an array in Java?
15 Answers
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Are Java static initializers thread safe?
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Yes, Java static initializers are thread safe (use your first option).
However, if you want to ensure that the code is executed exactly once you need to make sure that the class is only loaded by a single class-loader. Static ini...