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Sockets: Discover port availability using Java
How do I programmatically determine the availability of a port in a given machine using Java?
10 Answers
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How do I uninstall a Windows service if the files do not exist anymore?
...e.
Method 1 - You can use the SC tool (Sc.exe) included in the Resource Kit.
(included with Windows 7/8)
Open a Command Prompt and enter
sc delete <service-name>
Tool help snippet follows:
DESCRIPTION:
SC is a command line program used for communicating with the
NT Serv...
sql primary key and index
...et as the primary key. If I query off the ID often do I also need to index it? Or does it being a primary key mean it's already indexed?
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What is output buffering?
What is output buffering and why is one using it in PHP?
7 Answers
7
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How to COUNT rows within EntityFramework without loading contents?
...ying to determine how to count the matching rows on a table using the EntityFramework.
7 Answers
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ssh: The authenticity of host 'hostname' can't be established
When i ssh to a machine, sometime i get this error warning and it prompts to say "yes" or "no". This cause some trouble when running from scripts that automatically ssh to other machines.
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How do you find all subclasses of a given class in Java?
...iven interface) in Java?
As of now, I have a method to do this, but I find it quite inefficient (to say the least).
The method is:
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Change project name on Android Studio
...as shown in the image below.
In the first rectangle I want to change it in:
31 Answers
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Getting an element from a Set
...
There would be no point of getting the element if it is equal. A Map is better suited for this usecase.
If you still want to find the element you have no other option but to use the iterator:
public static void main(String[] args) {
Set<Foo> set = new HashSet&...
PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
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This is a typical bidirectional consistency problem. It is well discussed in this link as well as this link.
As per the articles in the previous 2 links you need to fix your setters in both sides of the bidirectional relationship. An example setter for the One side is in this ...