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How are Anonymous inner classes used in Java?
...an object with certain "extras" such as overriding methods, without having to actually subclass a class.
I tend to use it as a shortcut for attaching an event listener:
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// do some...
In which case do you use the JPA @JoinTable annotation?
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EDIT 2017-04-29: As pointed to by some of the commenters, the JoinTable example does not need the mappedBy annotation attribute. In fact, recent versions of Hibernate refuse to start up by printing the following error:
org.hibernate.AnnotationException...
How to check Google Play services version?
In my application, I need to check Google Play services version (which is installed in user's device). Is it possible ? And if yes, how can I do that? I searched Google but I could not find anything!
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JavaScript function order: why does it matter?
...cript calls a function that is defined further down the page than the call to it. However, my page is for a game, and no functions are called until the whole thing has downloaded. So why does the order functions appear in my code matter?
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How do I make the method return type generic?
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This is the best answer so far - but you ought to change addFriend in the same way. It makes it harder to write bugs since you need that class literal in both places.
– Craig P. Motlin
Jan 16 '09 at 17:01
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How to create a tuple with only one element
In the below example I would expect all the elements to be tuples, why is a tuple converted to a string when it only contains a single string?
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How to make layout with rounded corners..?
How can I make a layout with rounded corners? I want to apply rounded corners to my LinearLayout .
18 Answers
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how to change any data type into a string in python
How can I change any data type into a string in Python?
10 Answers
10
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A non well formed numeric value encountered
I have a form that passes two dates (start and finish) to a PHP script that will add those to a DB. I am having problems validating this. I keep getting the following errors
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What's the difference between returning void and returning a Task?
...-generic Task . I can see why returning a Task<MyType> is useful to return data to the caller when the async operation completes, but the functions that I've seen that have a return type of Task never return any data. Why not return void ?
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