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Optional Methods in Java Interface
From my understanding if you implement an interface in java, the methods specified in that interface have to be used by the sub classes implementing the said interface.
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Java associative-array
How can I create and fetch associative arrays in Java like I can in PHP?
15 Answers
15...
How to create a file in a directory in java?
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With Java 7, you can use Path, Paths, and Files:
import java.io.IOException;
import java.nio.file.FileAlreadyExistsException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
public class Create...
Why there is no ForEach extension method on IEnumerable?
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There is already a foreach statement included in the language that does the job most of the time.
I'd hate to see the following:
list.ForEach( item =>
{
item.DoSomething();
} );
Instead of:
foreach(Item item in list)
{
item.DoSomething();
}
The latter is clea...
Is Java's assertEquals method reliable?
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You should always use .equals() when comparing Strings in Java.
JUnit calls the .equals() method to determine equality in the method assertEquals(Object o1, Object o2).
So, you are definitely safe using assertEquals(string1, string2). (Because Strings are Objects)
Here is a link ...
Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [
...ogle App Engine Web Application Project on Eclipse Kepler on Mac OS X with java version "1.7.0_45"
2 Answers
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Long vs Integer, long vs int, what to use and when?
...e you need to make use of methods inherited from Object, such as hashcode. Java.util.collections methods usually use the boxed (Object-wrapped) versions, because they need to work for any Object, and a primitive type, like int or long, is not an Object.
Another difference is that long and int are p...
Stream vs Views vs Iterators
... part of the documentation... oh, actually it is! Thanks Daniel docs.scala-lang.org/tutorials/FAQ/stream-view-iterator.html
– Svend
Jul 25 '14 at 12:57
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How can I read input from the console using the Scanner class in Java?
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A simple example to illustrate how java.util.Scanner works would be reading a single integer from System.in. It's really quite simple.
Scanner sc = new Scanner(System.in);
int i = sc.nextInt();
To retrieve a username I would probably use sc.nextLine().
Sys...
Sort a single String in Java
Is there a native way to sort a String by its contents in java? E.g.
10 Answers
10
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