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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
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So, you have a
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
java.net.ConnectException: Connection refused
I'm quoting from this answer which also contains a step-by-step MySQL+JDBC tutorial:
If you get a SQLException: Conn...
How to disable Django's CSRF validation?
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Lutz Prechelt
26.4k55 gold badges4949 silver badges7171 bronze badges
answered May 9 '13 at 9:10
SalvatorelabSalvatore...
Error “library not found for” after putting application in AdMob
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24 Answers
24
Active
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What's the difference between Ruby's dup and clone methods?
...opies the singleton class, while dup does not.
o = Object.new
def o.foo
42
end
o.dup.foo # raises NoMethodError
o.clone.foo # returns 42
Second, clone preserves the frozen state, while dup does not.
class Foo
attr_accessor :bar
end
o = Foo.new
o.freeze
o.dup.bar = 10 # succeeds
o.clone...
Why doesn't String switch statement support a null case?
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145
As damryfbfnetsi points out in the comments, JLS §14.11 has the following note:
The prohibiti...
Is there replacement for cat on Windows
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460
Windows type command works similarly to UNIX cat.
Example 1:
type file1 file2 > file3
i...
How can I get stock quotes using Google Finance API?
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40
There's a whole API for managing portfolios. *Link removed. Google no longer provides a develop...
Viewing full output of PS command
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147
It is likely that you're using a pager such as less or most since the output of ps aux is longe...
HTTP status code 0 - Error Domain=NSURLErrorDomain?
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Irfan DANISH
7,1971010 gold badges3434 silver badges6262 bronze badges
answered Nov 8 '13 at 15:23
Julian ReschkeJulian Reschke
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