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How many classes should I put in one file? [closed]

... A Python file is called a "module" and it's one way to organize your software so that it makes "sense". Another is a directory, called a "package". A module is a distinct thing that may have one or two dozen closely-related classes. The tri...
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How to use wait and notify in Java without IllegalMonitorStateException?

... To be able to call notify() you need to synchronize on the same object. synchronized (someObject) { someObject.wait(); } /* different thread / object */ synchronized (someObject) { someObject.notify(); } ...
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How to name factory like methods?

...uess that most factory-like methods start with create . But why are they called " create "? Why not " make ", " produce ", " build ", " generate " or something else? Is it only a matter of taste? A convention? Or is there a special meaning in "create"? ...
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How do I programmatically change file permissions?

In Java, I'm dynamically creating a set of files and I'd like to change the file permissions on these files on a linux/unix file system. I'd like to be able to execute the Java equivalent of chmod . Is that possible Java 5? If so, how? ...
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mongodb find by multiple array items

...o find documents where words contains both elements (text and here) using $all: db.things.find({ words: { $all: ["text", "here"] }}); or either of them (text or here) using $in: db.things.find({ words: { $in: ["text", "here"] }}); ...
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Difference between getContext() , getApplicationContext() , getBaseContext() and “this”

...w.getContext(): Returns the context the view is currently running in. Usually the currently active Activity. Activity.getApplicationContext(): Returns the context for the entire application (the process all the Activities are running inside of). Use this instead of the current Activity context i...
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Check if a value is in an array (C#)

... @Sami: Linq uses loops internally. – user195488 Nov 6 '12 at 19:22 2 ...
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What is the difference between Google App Engine and Google Compute Engine?

...For example, if your app becomes very successful, App Engine will automatically create more instances to handle the increased volume. Read more about App Engine Compute Engine is an Infrastructure-as-a-Service. You have to create and configure your own virtual machine instances. It gives you more ...
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How to list empty folders in linux

In Linux how do I check all folders in a directory and output the name of all directories that are empty to a list. 1 Answe...
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creating a strikethrough text?

... it really works, but can i change its properities i mean its size, its color something like that – nawfal cuteberg Mar 20 '12 at 12:35 ...