    array = new int[] {1, 1, 2, 3, 5, 8};

Source: [Oracle JavaDocs - Arrays][1]

[1]: http://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html

The reason the first one works is because the compiler can check how many elements you are going to assign to the array, and then allocate the appropriate amount of memory.

EDIT: I realize now that you are just trying to update `array1` with new data... Mike D&#39;s answer solves that.

Eric Lippert&#39;s comments in [this question](https://stackoverflow.com/questions/3166349/what-is-the-type-in-typeobjectname-var) have left me thoroughly confused. What is the difference between casting and conversion in C#?

What is the difference between casting and conversion?

I have a typical javascript function with some parameters

    my_function = function(content, options) { action }

	
if I call the function as such :

    my_function (options)

the argument &quot;options&quot; is passed as &quot;content&quot;

how do i go around this so I can either have both arguments passed or just one ?
thank you

javascript: optional first argument in function

    int[] array1 = {1, 2, 3, 4, 5, 6, ,7, 8}; - working


    array1 = {1, 1, 1, 1, 2, 5, ,7, 8}; - NOT working

The first line is working, but second line is not working.

 How can I make the initialization from the second line in one single line of code? 

Java: How initialize an array in Java in one line?

<pre><code class="hljs language-ini">int[] array1 = {1, 2, 3, 4, 5, 6, ,7, 8}; - working


array1 = {1, 1, 1, 1, 2, 5, ,7, 8}; - NOT working
</code></pre>
The first line is working, but second line is not working.
How can I make the initialization from the second line in one single line of code?

How can one make a Java class immutable, what is the need of immutability and is there any advantage to using this?

Immutable class?

What is the difference between `System.out.println()` and `System.err.println()` in Java?

difference between System.out.println() and System.err.println()

I am trying to parse an XML file from an HTTP URL. I want to configure a timeout of 15 seconds if the XML fetch takes longer than that, I want to report a timeout. For some reason, the setConnectTimeout and setReadTimeout do not work. Here&#39;s the code:

              URL url = new URL(&quot;http://www.myurl.com/sample.xml&quot;);
              URLConnection urlConn = url.openConnection();
              urlConn.setConnectTimeout(15000);
              urlConn.setReadTimeout(15000);
              urlConn.setAllowUserInteraction(false);         
              urlConn.setDoOutput(true);
 
              InputStream inStream = urlConn.getInputStream();
              InputSource input = new InputSource(inStream);


And I am catching the SocketTimeoutException.

Thanks
Chris

Java URLConnection Timeout

I have an abstract class A that define abstract methods. This means that, for a class to be instanciable, all the abstract method have to be implemented.

I&#39;d like all my subclasses to implement a constructor with 2 ints as parameters. 

Declaring a constructor defeats my purpose, as I want the constructor defined in subclasses and I don&#39;t know anything about the implementation. Moreover I cannot declare a constructor as being abstract;

Is there a way to do this ?

__Example of what I want:__

Lets say that I am defining the API of a Matrix class. In my problem, Matrix cannot change their dimensions.

For a Matrix to be created, I need to provide its size.

Hence, I want all my implementors to provide the constructor with the size as a parameter. This constructor is motivated by the problem, not by an implementation concern. The implementation can do whatever it wants with these, provided that all the semantic of the methods are kept.

Let&#39;s say I want to provide a basic implementation of the `invert()` method in my abstract class. This method will create a new matrix with `this` inverted dimensions. More specifically, as it is defined in the abstract class, it will create a new instance of the same class as `this`, using a constructor that takes two ints. As it does not know the instance it will use reflection (getDefinedConstructor) and I want a way to waranty that I&#39;ll get it and that it will be meaningfull for the implementation.


How can I force a Constructor to be defined in all subclass of my abstract class

I&#39;m converting some C# code to Java and I need to include an exception that is similar to C#&#39;s InvalidOperationException. Does such a thing exist? Also is there a list of equivalent exception types in the two languages? Thanks.
&lt;hr/&gt;
I think in my particular case IllegalStateException is most appropriate. Thanks for all the responses.

Is there a Java equivalent of C#&#39;s InvalidOperationException?

I am trying to find the intersection values between multiple arrays.

for example

    code1 = [1,2,3]
    code2 = [2,3,4]
    code3 = [0,2,6]

So the result would be 2

I know in PHP you can do this with array_intersect

I wanted to be able to easily add additional array so I don&#39;t really want to use multiple loops

Any ideas ?

Thanks, Alex

rails - Finding intersections between multiple arrays

Previously answered questions here said that this was the fastest way:

    //nl is a NodeList
    var arr = Array.prototype.slice.call(nl);

In benchmarking on my browser I have found that it is more than 3 times slower than this:

    var arr = [];
    for(var i = 0, n; n = nl[i]; ++i) arr.push(n);

They both produce the same output, but I find it hard to believe that my second version is the fastest possible way, especially since people have said otherwise here.

Is this a quirk in my browser (Chromium 6)? Or is there a faster way?

EDIT: For anyone who cares, I settled on the following (which seems to be the fastest in every browser that I tested):

    //nl is a NodeList
    var l = []; // Will hold the array of Node&#39;s
    for(var i = 0, ll = nl.length; i != ll; l.push(nl[i++]));

EDIT2: I found an even faster way

    // nl is the nodelist
    var arr = [];
    for(var i = nl.length; i--; arr.unshift(nl[i]));


Fastest way to convert JavaScript NodeList to Array?

I&#39;m trying to make a high score table, and suck at arrays in objective c (actually, in general objective c is challenging for me), so I can&#39;t figure out how to sort. I&#39;m trying to do something like this (speudocode, I&#39;m writing this in actionscript style because I&#39;m more comfortable with it):

    highscores.addObjecttoArray(score)
    highscores.sort(ascending)

But I can&#39;t figure it out... I&#39;ve seen other threads about it, but their use plist files and stuff and I don&#39;t know enough objective c to learn from them.

How Do I sort an NSMutable Array with NSNumbers in it?

I&#39;ve been trying to push an item to an associative array like this:

    $new_input[&#39;name&#39;] = array(
        &#39;type&#39; =&gt; &#39;text&#39;, 
        &#39;label&#39; =&gt; &#39;First name&#39;, 
        &#39;show&#39; =&gt; true, 
        &#39;required&#39; =&gt; true
    );
    array_push($options[&#39;inputs&#39;], $new_input);

However, instead of &#39;name&#39; as the key in adds a number. Is there another way to do it?

Push item to associative array in PHP

If an array is empty, it looks like you can&#39;t check it&#39;s length using &quot;.length&quot;.  What&#39;s the best way to check if an array is empty?

Content Type	Original Author	Original Content on Stackoverflow
Question	Peter	View Question on Stackoverflow
Solution 1 - Java	MikeD	View Answer on Stackoverflow
Solution 2 - Java	Dolph	View Answer on Stackoverflow

Java: How initialize an array in Java in one line?

Java Problem Overview

Java Solutions

Solution 1 - Java

Solution 2 - Java

javascript: optional first argument in function

What is the difference between casting and conversion?

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