56
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3
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Why is printing "B" dramatically slower than printing "#"?
I generated two matrices of 1000 x 1000: First Matrix: O and #. Second Matrix: O and B. Using the following
63
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30
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I wanted to create a list of options for testing purposes. At first, I did this: ArrayList<String> plac
52
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30
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How can I convert a String to an int in Java? My String contains only numbers, and I want to return the numbe
54
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30
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When to use LinkedList over ArrayList in Java?
I've always been one to simply use: List<String> names = new ArrayList<>(); I use the inte
57
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29
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What is the difference between public, protected, package-private and private in Java?
In Java, are there clear rules on when to use each of access modifiers, namely the default (package private),
67
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30
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834
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How do I efficiently iterate over each entry in a Java Map?
If I have an object implementing the Map interface in Java and I wish to iterate over every pair contained wit
60
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18
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443
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Why is char[] preferred over String for passwords?
In Swing, the password field has a getPassword() (returns char[]) method instead of the usual getText() (retur
64
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11
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982
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Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
Until today, I thought that for example: i += j; Was just a shortcut for: i = i + j; But if we try this:
60
votes
30
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343
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I have an array that is initialized like: Element[] array = {new Element(1), new Element(2), new Element(3)};
60
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30
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2.4K
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What are the differences between a HashMap and a Hashtable in Java? Which is more efficient for non-threaded
50
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30
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Avoiding NullPointerException in Java
I use object != null a lot to avoid NullPointerException. What is an alternative to: if (someobject != null) {
52
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30
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Is Java "pass-by-reference" or "pass-by-value"?
I always thought Java uses pass-by-reference. However, I've seen a blog post that claims that Java uses p
63
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27
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Here is a piece of C++ code that shows some very peculiar behavior. For some strange reason, sorting the data
69
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58
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7
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In CodeIgniter using active record, how do I perform a not equal to in $this->db->where(). For instance
62
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In Codeigniter, get_instance() is a globally available function that returns the Controller super-object which
60
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3
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Disable PHPStorm new file branding
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58
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I have to retrieve a MySQL database information from master database and then connect to that database, and fe
59
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2
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I have read and read articles on PHPUnit, SimpleTest, and other Unit Testing frameworks. They all sound so gre
61
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786
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Directory index forbidden by Options directive
I'm using the dompdf plugin for codeigniter: http://codeigniter.com/wiki/PDF_generation_using_dompdf/ to
