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To prevent a memory leak, the JDBC Driver has been forcibly unregistered
...s /lib. If you still keep it in webapp's /WEB-INF/lib, then you should manually register and deregister it using a ServletContextListener.
Downgrade to Tomcat 6.0.23 or older so that you will not be bothered with those warnings. But it will silently keep leaking memory. Not sure if that's good to kn...
How to show only next line after the matched one?
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For anyone who really wanted a grep -A2 equivalent (which is what I needed), getline just eats the line and goes on to the next. So what worked for me was literally just awk '/blah/{getline; getline; print}' logfile
– A...
How can a Java program get its own process ID?
...There exists no platform-independent way that can be guaranteed to work in all jvm implementations.
ManagementFactory.getRuntimeMXBean().getName() looks like the best (closest) solution, and typically includes the PID. It's short, and probably works in every implementation in wide use.
On linux+wind...
Do interfaces inherit from Object class in java
...hey don't. And there is no common "root" interface implicitly inherited by all interfaces either (as in the case with classes) for that matter.(*)
If no then how we are able to call the method of object class on interface instance
An interface implicitly declared one method for each public method ...
Database Structure for Tree Data Structure
... using the employee ID to link an employee to their supervisor. This is usually a sub-optimal approach. An approach that often works better is to model the org structure separate from employees themselves, and maintain the employee as an attribute of the structure. This way, when an employee leaves ...
Using IoC for Unit Testing
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Generally speaking, a DI Container should not be necessary for unit testing because unit testing is all about separating responsibilities.
Consider a class that uses Constructor Injection
public MyClass(IMyDependency dep) { }
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What is pip's equivalent of `npm install package --save-dev`?
In nodejs, I can do npm install package --save-dev to save the installed package into the package.
8 Answers
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Differences between Emacs and Vim
...and weeks till you will be happy with it and then you will learn new stuff all the time. You will be annoyed when you don't have access to it and constantly change your config. You won't be able to use other peoples emacs versions easily and it won't just be installed. It uses Lisp, which is great. ...
Is there an easy way to convert jquery code to javascript? [closed]
...OM traversing and manipulation with the plain DOM api (you would probably call this: normal JavaScript).
This can however be a pain for some things. (which is why libraries were invented in the first place).
Googling for "javascript DOM traversing/manipulation" should present you with plenty of h...
Timer & TimerTask versus Thread + sleep in Java
...threading issues (such as avoiding deadlocks etc.). And of course it is usually better to use well-tested standard code instead of some homemade solution.
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