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Convert array of strings into a string in Java
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(Java 8 and above):
String str = String.join(",", arr);
And if you're coming from the Android angle:
String str = TextUtils.join(",", arr);
You can modify the above depending on what characters, if any, you want in between strings.
You may see near identical code to the pre-Java 8 code but ...
How to make a phone call in android and come back to my activity when the call is done?
...y activity. Can you please tell me how can I launch a call activity which comes back to me when 'End call' button is pressed? This is how I'm making the phone call:
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Center a button in a Linear layout
...roid:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<ImageButton android:id="@+id/btnFindMe"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android...
SecurityException: Permission denied (missing INTERNET permission?)
...ted, user cannot revoke the permission other way than uninstalling the app completely as standard Android framework (from AOSP) offers no such feature at the moment.
But things are getting more tricky if you also do not mind your app running on rooted devices too. There're tools available in Google...
List the queries running on SQL Server
...har,
dateadd(ms, datediff(ms, P.last_batch, getdate()), '1900-01-01'),
121), 12) as 'batch_duration'
, P.program_name
, P.hostname
, P.loginame
from master.dbo.sysprocesses P
where P.spid > 50
and P.status not in ('background', 'sleeping')
and P.cmd not i...
How can I clear or empty a StringBuilder? [duplicate]
...r.Clear in the documentation, just the delete method which seems overly complicated.
9 Answers
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Ruby Bundle Symbol not found: _SSLv2_client_method (LoadError)
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Just to add to this, if a boxen user comes across this - I could not get rbenv to reinstall using the commands above - so I had to uninstall and reinstall 2.1.2 using rbenv rbenv uninstall 2.1.2 rbenv install 2.1.2 bundle
– jeffsaracco
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Heroku “psql: FATAL: remaining connection slots are reserved for non-replication superuser connectio
...ow you to pool connections at the database level using PGBouncer.
https://www.lewagon.com/blog/how-to-migrate-heroku-postgres-database-to-amazon-rds
UPDATE:
Heroku responded to my open ticket and stated that my database was improperly load balanced in their network. They said that improvements t...
How to do something to each file in a directory with a batch script
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Command line usage:
for /f %f in ('dir /b c:\') do echo %f
Batch file usage:
for /f %%f in ('dir /b c:\') do echo %%f
Update: if the directory contains files with space in the names, you need to change the delimiter the...
How can I determine the current line number in JavaScript?
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