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Why switch is faster than if
Lots of Java books describe the switch statement as being faster than the if else statement. But I did not find out anywhere why switch is faster than if .
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Differences between Ant and Maven [closed]
...r used either. I understand that they are used to automate the building of Java projects, but I do not know where to start from.
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Java: notify() vs. notifyAll() all over again
...d notifyAll() " then a lot of explanations will pop up (leaving apart the javadoc paragraphs). It all boils down to the number of waiting threads being waken up: one in notify() and all in notifyAll() .
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is vs typeof
... Class1>(c1); // ~178ms
b = GetType2<Class1, Class1>(c1); // ~98ms
b = Is<Class1, Class1>(c1); // ~78ms
b = GetType1<Class1, Class2>(c2); // ~178ms
b = GetType2<Class1, Class2>(c2); // ~96ms
b = Is<Class1, Class2>(c2); // ~69ms
b = GetType1&...
Hadoop “Unable to load native-hadoop library for your platform” warning
... native to your HADOOP_OPTS like this:
export HADOOP_OPTS="$HADOOP_OPTS -Djava.library.path=$HADOOP_HOME/lib/native"
PS: Thank Searene
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How to configure MongoDB Java driver MongoOptions for production use?
...eb looking for best practices for configuring MongoOptions for the MongoDB Java driver and I haven't come up with much other than the API. This search started after I ran into the "com.mongodb.DBPortPool$SemaphoresOut: Out of semaphores to get db
connection" error and by increasing the connections/...
Spring RestTemplate - how to enable full debugging/logging of requests/responses?
...on of ClientHttpRequestInterceptor to trace request and response:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpRequest;
import org.springframework.http.clie...
Java Round up Any Number
....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f4540684%2fjava-round-up-any-number%23new-answer', 'question_page');
}
);
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Why doesn't ruby support method overloading?
...s with static argument-based dispatch and without optional arguments (like Java, for example), it is sometimes almost impossible to tell for a mere mortal, which overload is going to be picked.
In C#, you can actually encode any 3-SAT problem into overload resolution, which means that overload res...
How to call a method after a delay in Android
...MainLooper()).postDelayed({
//Do something after 100ms
}, 100)
Java
final Handler handler = new Handler(Looper.getMainLooper());
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 100ms
}
}, 100);
...