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Error: Could not find or load main class [duplicate]
...nsure that you add the location of your .class file to your classpath. So, if its in the current folder, add . to your classpath.
Note that the Windows classpath separator is a semi-colon, i.e. a ;.
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Bash script to calculate time elapsed
...e to this solution is that it only measures whole seconds, i.e. not usable if you need sub-second precision.
– Czechnology
Oct 27 '17 at 16:01
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Move window between tmux clients
I'm just learning tmux and I have no experience with screen. I'm wondering if I can move a window in one tmux client to another tmux client. I want to move my IRC client to a new window on my screen.
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Open and write data to text file using Bash?
... the operator > redirects output to a file overwriting the file if one exists. The >> will append to an existing file.
– Rocky Pulley
May 17 '15 at 3:12
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Undo git mv (rename)
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If you have done no other changes (that you want to keep) since the last commit, you can do
git reset --hard
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Get a list of URLs from a site [closed]
...: ::::::: An error occured There was an error while accessing the URL specified: 159.121.ssss Please make sure to specify the correct website URL and resubmit your request.
– JustJohn
Jul 26 '16 at 21:29
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Change app language programmatically in Android
...time you enter activity (each activity) from my experience. here is a code if you still need this (again, I don't recommend that)
Resources res = context.getResources();
// Change locale settings in the app.
DisplayMetrics dm = res.getDisplayMetrics();
android.content.res.Configuration conf = res.ge...
How do I read the first line of a file using cat?
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There are many different ways:
sed -n 1p file
head -n 1 file
awk 'NR==1' file
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Get current directory name (without full path) in a Bash script
... # ...useful to make hidden characters readable.
Note that if you're applying this technique in other circumstances (not PWD, but some other variable holding a directory name), you might need to trim any trailing slashes. The below uses bash's extglob support to work even with multip...
Utility classes are evil? [closed]
... should represent a single thing and all of its attributes and operations. If you are operating on a thing, that method should probably be a member of that thing.
However, there are times when you can use utility classes to group a number of methods together — an example being the java.util.Colle...