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Installing Java 7 on Ubuntu
...ind a paywall. Also, OpenJDK has grown up and is a more viable alternative nowadays.
In Ubuntu 16.04 and higher, Java 7 is no longer available. Usually you're best off installing Java 8 (or 9) instead.
sudo apt-get install openjdk-8-jre
or, f you also want the compiler, get the jdk:
sudo apt-...
How to convert current date into string in java?
...
FYI, these troublesome classes are now legacy, supplanted by the java.time classes. See Oracle Tutorial.
– Basil Bourque
Aug 18 '17 at 15:46
...
How to write iOS app purely in C
...plicationMain(int, ...);
// Entry point of the application. If you don't know what this is by now,
// then you probably shouldn't be reading the rest of this post.
int main(int argc, char *argv[])
{
// Create an @autoreleasepool, using the old-stye API.
// Note that while NSAutoreleasePoo...
Is there a quicker / better way to clear the iPhone Simulator cache than deleting its directory?
...o the Keyboard Shortcut:. (I use command-period)
Click the Add button.
Now, while in your iOS Simulator, you can simply use your new shortcut key to reset.
If the Simulator doesn't appear in the drop down list:
In a Finder window, go to your Applications folder.
Right-click Xcode and choose...
Difference between volatile and synchronized in Java
...ariables cannot be reordered with each other. The difference is that it is now no longer so easy to reorder normal field accesses around them. Writing to a volatile field has the same memory effect as a monitor release, and reading from a volatile field has the same memory effect as a monitor acquir...
Understanding events and event handlers in C#
...say these methods have the same signature, or shape, as the delegate.
So knowing how to create a reference to a method, let's think about the purpose of events: we want to cause some code to be executed when something happens elsewhere in the system - or "handle the event". To do this, we create sp...
How do you manage your gists on GitHub? [closed]
...
Now gist.github.com supports search. So you can search your gist. I use #hashtag in description, so I
can search my gist by tags via user:myusername #tag.
For offline usage, I cloned all my gists. And use find and grep to...
What is the use of static variable in C#? When to use it? Why can't I declare the static variable in
... variable. When I run this code the output will be 10 and 10. Its simple.
Now let's look at the static variable here; I am declaring the variable as a static.
Example with static variable:
public class Variable
{
public static int i = 5;
public void test()
{
i = i + 5;
...
Get current time in milliseconds in Python?
...
@ParallelUniverse: .utcnow() uses GetSystemTimeAsFileTime() on recent CPython on Windows. Wouldn't time.clock() call (QueryPerformanceCounter()) introduce more noise than it might reduce? See Precision is not the same as accuracy.
...
What are detached, persistent and transient objects in hibernate?
...ng it with a Session:
Long id = (Long) session.save(person);
// person is now in a persistent state
Now, if we close the Hibernate Session, the persistent instance will become a detached instance: it isn't attached to a Session anymore (but can still be modified and reattached to a new Session la...