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What is the difference between loose coupling and tight coupling in the object oriented paradigm?
...ttern. Since the Subject class can maintain a list of classes that inherit from 'Observer', without actually knowing the concrete type of those classes, this is an instance of loose coupling. The Subject doesn't depend on any of its Observers or their internal concerns. The observers don't depend on...
How to get names of classes inside a jar file?
...hen you're scanning for a large number of classes.
ClassPath cp=ClassPath.from(Thread.currentThread().getContextClassLoader());
for(ClassPath.ClassInfo info : cp.getTopLevelClassesRecurusive("my.package.name")) {
// Do stuff with classes here...
}
Reflections
I haven't personally used the Re...
List of remotes for a Git repository?
...
NOTE: Usually git remote simply tells me about origin -- the repository from which I cloned the project. git remote would be handy if you were collaborating with two or more people working on the same project and accessing each other's repositories directly rather than passing everything through...
Get output parameter value in ADO.NET
...tput depending on how you would like to
// handle a null value returned from the query (shown in comment for each).
// Note: You can use either the SqlParameter variable declared
// above or access it through the Parameters collection by name:
// outputIdParam.Value == cmd.Parameters[...
A more useful statusline in vim? [closed]
...
Nothing special done, from: github.com/Lokaltog/vim-powerline#troubleshooting just make sure you have "let g:Powerline_symbols = 'fancy'" in your vimrc file and have patched fonts installed.
– Gavin Gilmour
S...
Disabling contextual LOB creation as createClob() method threw error
...ns during the boot, when Hibernate tries to retrieve some meta information from the database. If this annoys you, you can disable it:
hibernate.temp.use_jdbc_metadata_defaults false
share
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improv...
What linux shell command returns a part of a string? [duplicate]
...
what do we need to do if we want to start from 3rd char till end of the string ie: "abcdef" we need cdef then echo "abcdef" | cut -c3?"
– user1731553
Apr 5 '16 at 5:46
...
sed edit file in place
... to write the output back to the file. Another option is to create a patch from piping the content into diff.
Tee method
sed '/regex/' <file> | tee <file>
Patch method
sed '/regex/' <file> | diff -p <file> /dev/stdin | patch
UPDATE:
Also, note that patch will get the ...
Use space as a delimiter with cut command
...re passing them to the command being invoked.
(a) is answered by a quote from the POSIX guidelines for utilities (emphasis mine)
If the SYNOPSIS of a standard utility shows an option with a mandatory option-argument [...] a conforming application shall use separate arguments for that option an...
What is the use of making constructor private in a class?
...e you may need private constructor:
The constructor can only be accessed from static factory method inside the class itself. Singleton can also belong to this category.
A utility class, that only contains static methods.
...