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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
...tions.
DB server has run out of connections.
Something in between Java and DB is blocking connections, e.g. a firewall or proxy.
To solve the one or the other, follow the following advices:
Verify and test them with ping.
Refresh DNS or use IP address in JDBC URL instead.
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How do I write a for loop in bash
...
The bash for consists on a variable (the iterator) and a list of words where the iterator will, well, iterate.
So, if you have a limited list of words, just put them in the following syntax:
for w in word1 word2 word3
do
doSomething($w)
done
Probably you want to iterate...
Difference between innerText, innerHTML, and childNodes[].value?
What is the difference between innerHTML , innerText and childNodes[].value in JavaScript?
11 Answers
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How to set java_home on Windows 7?
I went to the Environment Variables in 'System' in the control panel and made two new variables, one for user variables and one for system variables. Both were named JAVA_HOME and both pointing to
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Adding parameter to ng-click function inside ng-repeat doesn't seem to work
..., i.e. ng-click="taskData.currentTaskId = task.id"
– Andrew
Oct 9 '14 at 4:05
Thanks Sir..I seen lots of blog but my p...
AngularJS: Is there any way to determine which fields are making a form invalid?
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If you want to see which fields are messing up with your validation and you have jQuery to help you, just search for the "ng-invalid" class on the javascript console.
$('.ng-invalid');
It will list all DOM elements which failed validation for any reason.
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How do you normalize a file path in Bash?
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if you're wanting to chomp part of a filename from the path, "dirname" and "basename" are your friends, and "realpath" is handy too.
dirname /foo/bar/baz
# /foo/bar
basename /foo/bar/baz
# baz
dirname $( dirname /foo/bar/baz )
# /foo
realpath ../foo
# ../foo: No such file or directory
re...
How can I clear an HTML file input with JavaScript?
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you will lost your handlers, like this one: var inputPhoto = document.getElementById('photoInput'); inputPhoto.addEventListener('change', handler_file, false);
– Rui Martins
Jun 22 '17 at 17:13
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Where does Console.WriteLine go in ASP.NET?
...unning in WebSphere), when I use System.out.println() , my text goes to standard out, which is mapped to a file by the WebSphere admin console.
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How to trigger the window resize event in JavaScript?
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This doesn't work in Internet Explorer, where you'll have to do the longhand:
var resizeEvent = window.document.createEvent('UIEvents');
resizeEvent.initUIEvent('resize', true, false, window, 0);
window.dispatchEvent(resizeEvent);
jQuery has the trigger method, which works like this:
$(window)....