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JavaScript file upload size validation
...
Yes, there's a new feature from the W3C that's supported by some modern browsers, the File API. It can be used for this purpose, and it's easy to test whether it's supported and fall back (if necessary) to another mechanism if it isn't.
He...
How to create a date and time picker in Android? [closed]
...ctivity, R.layout.date_time_picker, null);
final AlertDialog alertDialog = new AlertDialog.Builder(activity).create();
dialogView.findViewById(R.id.date_time_set).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
DatePicker datePicker = (Da...
Please explain the exec() function and its family
...e two operations you can do.
The first is to fork(), which creates a brand new process containing a duplicate (mostly) of the current program, including its state. There are a few differences between the two processes which allow them to figure out which is the parent and which is the child.
The sec...
Fragment is not being replaced but put on top of the previous one
...nTransaction();
fragmentTransaction.replace(R.id.fragment_frame_layout,new ShopFragment());
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
and the container activity xml:
<FrameLayout
android:id="@+id/fragment_frame_layout"
android:layout_width="mat...
Mapping many-to-many association table with extra column(s)
...oMany(mappedBy = "user")
private Set<UserService> userServices = new HashSet<UserService>();
}
class UserService {
@ManyToOne
@JoinColumn(name = "user_id")
private User user;
@ManyToOne
@JoinColumn(name = "service_code")
private Service service;
@Column...
Android - implementing startForeground for a service?
...your main activity, start the service with the following code:
Intent i = new Intent(context, MyService.class);
context.startService(i);
Then in your service for onCreate() you would build your notification and set it as foreground like so:
Intent notificationIntent = new Intent(this, MainActiv...
Sending HTTP POST Request In Java
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Since some of the classes, in the original answer, are deprecated in the newer version of Apache HTTP Components, I'm posting this update.
By the way, you can access the full documentation for more examples here.
HttpClient httpclient = HttpClients.createDefault();
HttpPost httppost = new HttpPo...
Can someone explain mappedBy in JPA and Hibernate?
I am new to hibernate and need to use one-to-many and many-to-one relations. It is a bi-directional relationship in my objects, so that I can traverse from either direction. mappedBy is the recommended way to go about it, however, I couldn't understand it. Can someone explain:
...
What's Mongoose error Cast to ObjectId failed for value XXX at path “_id”?
... I understand, but I'd like to avoid this check. How can I create a new ObjectId from a given string (from the GET request) for passing it to the findById method?
– gremo
Feb 18 '13 at 17:58
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Force re-download of release dependency using Maven
...u should have changed your projects dependency on X to be dependent on the new version X-1.2
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