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What is the default initialization of an array in Java?
... (whose decimal equivalent is 0).
When you create an array of something, all entries are also zeroed. So your array contains five zeros right after it is created by new.
Note (based on comments): The Java Virtual Machine is not required to zero out the underlying memory when allocating local va...
Is there a list of screen resolutions for all Android based phones and tablets? [closed]
...p the extreme aspect ratios, that are rarely seen at phone size or larger, all the other devices fit a range from 1.3333 to 1.7778, which conveniently matches the current iPhone/iPad ratios (considering all devices in portrait mode). Note that there are quite a few variations within that range, so i...
How to get record created today by rails activerecord?
How should I write the conditional statement for when I want to get all the records which were created today?
10 Answers
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CSS :after not adding content to certain elements
...t;button>, <textarea>,
<input>, and <select> tags). All other elements types can be referred
to as non-replaced elements.
:before and :after only work with non-replaced elements.
From the spec:
Note. This specification does not fully define the interaction of
:befor...
Various ways to remove local Git changes
...itory and checked out a branch. I worked on it, and then decided to remove all my local changes, as I wanted the original copy.
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How to wait for a number of threads to complete?
What is a way to simply wait for all threaded process to finish? For example, let's say I have:
13 Answers
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How do you concatenate Lists in C#?
...you want to assign it to a variable that is List<T>, you'll have to call ToList() on the IEnumerable<T> that is returned.
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Learn C first before learning Objective-C [closed]
...blem entirely in Obj-C, sometimes resulting in a very clumsy solutions. Usually I then replace some Obj-C code with pure C code (after all you can mix them as much as you like, the content of an Obj-C method can be entirely, pure C code). Without any intention to insult any Obj-C programmer, there a...
How to get all enum values in Java?
... yourEnums = YourEnumClass.class.getEnumConstants(); solved my problem of calling from a non-static method.
– Jeremy
Jul 21 '17 at 23:33
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How to wait for all threads to finish, using ExecutorService?
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Basically on an ExecutorService you call shutdown() and then awaitTermination():
ExecutorService taskExecutor = Executors.newFixedThreadPool(4);
while(...) {
taskExecutor.execute(new MyTask());
}
taskExecutor.shutdown();
try {
...