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What is “loose coupling?” Please provide examples
...
I'll use Java as an example. Let's say we have a class that looks like this:
public class ABC
{
public void doDiskAccess() {...}
}
When I call the class, I'll need to do something like this:
ABC abc = new ABC();
abc. doDiskAcc...
Setting log level of message at runtime in slf4j
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You can implement this using Java 8 lambdas.
import java.util.HashMap;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.event.Level;
public class LevelLogger {
private static final Logger LOGGER = Log...
What is a race condition?
... immutables as much as possible. But that is not always possible. So using java.util.concurrent.atomic, concurrent data structures, proper synchronization, and actor based concurrency will help.
The best resource for concurrency is JCIP. You can also get some more details on above explanation here....
How to change the indentation width in emacs javascript mode
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js-indent-level can be used in the default javascript-mode, which is included by default starting in emacs 23.2.
(setq js-indent-level 2)
should do what you're looking for. If you're using an older version of emacs, you may be in java-mode. I think this mode resp...
How to set delay in android?
...cs*1000) milliseconds.
}
}
Usage:
// Call this method directly from java file
int secs = 2; // Delay in seconds
Utils.delay(secs, new Utils.DelayCallback() {
@Override
public void afterDelay() {
// Do something after delay
}
});
...
Core pool size vs maximum pool size in ThreadPoolExecutor
...
From the doc:
When a new task is submitted in method execute(java.lang.Runnable),
and fewer than corePoolSize threads are running, a new thread is
created to handle the request, even if other worker threads are idle.
If there are more than corePoolSize but less than maximumPoolSi...
“Cannot start compilation: the output path is not specified for module…”
I have a very simple Java + Gradle project. It builds fine. It runs fine from the shell with "gradle run". However, if I try to run inside of IntelliJ, I get:
...
Scalar vs. primitive data type - are they the same thing?
...e, or is it a reference to something that contains the real value?", as in Java's primitive types vs. references. I see this as a somewhat lower-level distinction than scalar/compound, but not quite.
It really depends on context (and frequently what language family is being discussed). To take on...
How to render a PDF file in Android
... the rendering is extremely slow and it's difficult to make it work due to Java-JavaScript communication.
– Miloš Černilovský
Apr 8 '15 at 6:11
1
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Checking that a List is not empty in Hamcrest
...rtEquals(new ArrayList<>(0), Arrays.asList("foo", "bar");
you get
java.lang.AssertionError
Expected :[]
Actual :[foo, bar]
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