You might want look at Apache Configuration,

http://commons.apache.org/configuration/

Among many features it supports is the [Variable Interpolation][1]. 


  [1]: http://commons.apache.org/configuration/userguide/howto_basicfeatures.html#Variable_Interpolation

What you want to do is impossible using the Java [`Properties` class][1].

Property keys and values are simply Strings. No processing happens to them, so you can&#39;t refer to another value in a value.


  [1]: http://java.sun.com/j2se/1.5.0/docs/api/java/util/Properties.html

Ant files are scripts; properties files are buckets of strings.

The primary purpose of properties files is to serve as string containers for translatable text. The format strings typically used in resource bundles use an index-based system. When the string is translated, the order of the parameters can be changed in translated versions of the string without needing to change the Java code.

    String what = &quot;Hello&quot;;
    String who = &quot;Martin&quot;;
    System.out.println(MessageFormat.format(&quot;{0}, {1}!&quot;, what, who));
    System.out.println(MessageFormat.format(&quot;{1}, {0}!&quot;, what, who));

Output:

    Hello, Martin!
    Martin, Hello!

For use cases like this, it would not make sense to encapsulate the functionality in the Properties class because the strings usually need data from the application. The [MessageFormat][1] class can be used to perform the substitution.

This type of formatting should not be confused with the _other_ formatting options as specified by [Formatter][2]:

    System.out.format(&quot;%s, %s!%n&quot;, what, who);


  [1]: http://java.sun.com/javase/6/docs/api/java/text/MessageFormat.html
  [2]: http://java.sun.com/javase/6/docs/api/java/util/Formatter.html
  [3]: http://en.wikipedia.org/wiki/Unified_Expression_Language

The image file has a partition table, and it contains multiple partitions.

loopback devices might be a possibility.

Related threads:

- http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-01/7183.html
- http://lists.gnu.org/archive/html/grub-devel/2005-01/msg00077.html
- ftp://ftp.hq.nasa.gov/pub/ig/ccd/enhanced_loopback/

How to mount one partition from an image file that contains multiple partitions on Linux?

I&#39;m trying to disable these radio buttons when a the loadActive link is clicked but for some reason it only disables the first in the order and then skips the rest.

    &lt;form id=&quot;chatTickets&quot; method=&quot;post&quot; action=&quot;/admin/index.cfm/&quot;&gt;
        &lt;input id=&quot;ticketID1&quot; type=&quot;radio&quot; checked=&quot;checked&quot; value=&quot;myvalue1&quot; name=&quot;ticketID&quot;/&gt;
        &lt;input id=&quot;ticketID2&quot; type=&quot;radio&quot; checked=&quot;checked&quot; value=&quot;myvalue2&quot; name=&quot;ticketID&quot;/&gt;
    &lt;/form&gt;
    &lt;a href=&quot;#&quot; title=&quot;Load ActiveChat&quot; id=&quot;loadActive&quot;&gt;Load Active&lt;/a&gt;
And Here is the jquery i&#39;m using:

    jQuery(&quot;#loadActive&quot;).click(function() {
        //I have other code in here that runs before this function call
        writeData();
    });
    function writeData() {
        jQuery(&quot;input[name=&#39;ticketID&#39;]&quot;).each(function(i) {
		jQuery(this).attr(&#39;disabled&#39;, &#39;disabled&#39;);
	});
    }



Disabling radio buttons with jQuery

&gt; **Possible Duplicate:**  
&gt; [How to reference another property in java.util.Properties?](https://stackoverflow.com/questions/872272/how-to-reference-another-property-in-java-util-properties)  

&lt;!-- End of automatically inserted text --&gt;

look at my &quot;file.properties&quot;:

    key1= My name is
    key2= ${key1} Martin !

_____________________________________

Why when I get the value of &quot;key2&quot; my result is &quot;${key1} Martin !&quot; unlike &quot;My name is Martin !&quot;


=&gt; I program in Java 6&lt;br /&gt;
=&gt; I use java.util.Properties

Can I reference another property in a properties file (use ${property})

> Possible Duplicate: 
> <a href="https://stackoverflow.com/questions/872272/how-to-reference-another-property-in-java-util-properties" target="_blank" rel="noopener noreferrer">How to reference another property in java.util.Properties?</a>

look at my "file.properties":
<pre><code class="hljs language-ini">key1= My name is
key2= ${key1} Martin !
</code></pre>
<hr>
Why when I get the value of "key2" my result is "${key1} Martin !" unlike "My name is Martin !"
=> I program in Java 6 
=> I use java.util.Properties

An existing web application is running on Tomcat 4.1.  There is an XSS issue with a page, but I can&#39;t modify the source.  I&#39;ve decided to write a servlet filter to sanitize the parameter before it is seen by the page.

I would like to write a Filter class like this:

    import java.io.*;
    import javax.servlet.*;
    
    public final class XssFilter implements Filter {
    
      public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
          throws IOException, ServletException
      {
        String badValue = request.getParameter(&quot;dangerousParamName&quot;);
        String goodValue = sanitize(badValue);
        request.setParameter(&quot;dangerousParamName&quot;, goodValue);
        chain.doFilter(request, response);
      }
    
      public void destroy() {
      }
    
      public void init(FilterConfig filterConfig) {
      }
    }

But `ServletRequest.setParameter` doesn&#39;t exist.

How can I change the value of the request parameter before passing the request down the chain?

Modify request parameter with servlet filter

I want to take an existing enum and add more elements to it as follows:

    enum A {a,b,c}
    
    enum B extends A {d}
    
    /*B is {a,b,c,d}*/

Is this possible in Java?

Can enums be subclassed to add new elements?

In Java, what&#39;s the difference between:

    private final static int NUMBER = 10;

and

    private final int NUMBER = 10;

Both are `private` and `final`, the difference is the `static` attribute.

What&#39;s better? And why?

private final static attribute vs private final attribute

In Java, static final variables are constants and the convention is that they should be in upper-case. However, I have seen that most people declare loggers in lower-case which comes up as a violation in [PMD][1]. 

e.g:

    private static final Logger logger = Logger.getLogger(MyClass.class);

Just search [google][2]or [SO][3] for &quot;static final logger&quot; and you will see this for yourself.

Should we be using LOGGER instead? 


  [1]: http://pmd.sourceforge.net/
  [2]: http://www.google.co.uk/search?q=%22static+final+logger%22&amp;ie=utf-8&amp;oe=utf-8&amp;aq=t&amp;rls=org.mozilla:en-GB:official&amp;client=firefox-a
  [3]: https://stackoverflow.com/search?q=%22static+final+logger%22

Should a &quot;static final Logger&quot; be declared in UPPER-CASE?

I want to develop my project on Google App Engine with Struts2. For the database I have two options JPA and JDO. Will you guys please suggest me on it? Both are new for me and I need to learn them. So I will be focused on one after your replies.

Thanks.

JDO vs JPA for Java on Google App Engine

I figured I would ask... but is there a way to have the Get part of a property available as public, but keep the set as private?

Otherwise I am thinking I need two properties or a property and a method, just figured this would be cleaner.

VB.Net Properties - Public Get, Private Set

When is it appropriate to throw an exception from within a property getter or setter? When is it not appropriate? Why? Links to external documents on the subject would be helpful... Google turned up surprisingly little.

Best practices: throwing exceptions from properties

For example System.Net.HttpStatusCode Enum, I would like to get the HTTP Status Codes instead of the HTTP Status Text.
            `System.Net.HttpStatusCode.Forbidden` should return 403 instead of &quot;Forbidden&quot;.

How can I extract the value?

How to get the numeric value from the Enum?

I&#39;m rather confused about properties and instance variables in Objective-C.

I&#39;m about half-way through Aaron Hillegass&#39;s &quot;Cocoa Programming for Mac OS X&quot; and everything is logical. You would declare a class something like this:

    @class Something;
    
    @interface MyClass : NSObject {
    	NSString *name;
    	NSArray *items;
    	
    	Something *something;
    	
    	IBOutlet NSTextField *myTextField;
    }
    
    @property (nonatomic, retain) NSString *name;
    @property (nonatomic, retain) NSArray *items;

- Since other objects need to manipulate our `name` and `items` instance variables, we use `@property`/`@synthesize` to generate accessors/mutators for them. Within our class, we don&#39;t use the accessors/mutators—we just interact with the instance variable directly.

- `something` is just an instance variable that we&#39;re going to use in our class, and since no one else needs to use it, we don&#39;t create a pair of accessors and mutators for it.

- We need to interact with a text field in our UI, so we declare an `IBOutlet` for it, connect it, and we&#39;re done.

All very logical.

However, in the iPhone world, things seem to be different. People declare properties for every single instance variable, declare properties for `IBOutlets`, and use accessors/mutators to interact with instance variables **within** the class (e.g. they would write `[self setName:@&quot;Test&quot;]` rather than `name = @&quot;Test&quot;`).

Why? What is going on? Are these differences iPhone-specific? What are the advantages of declaring properties for all instance variables, declaring properties for `IBOutlets`, and using accessors/mutators within your own class?

Properties and Instance Variables in Objective-C

It appears to me that except for a little syntactic sugar, property() does nothing good.

Sure, it&#39;s nice to be able to write `a.b=2` instead of `a.setB(2)`, but hiding the fact that a.b=2 isn&#39;t a simple assignment looks like a recipe for trouble, either because some unexpected result can happen, such as `a.b=2` actually causes `a.b` to be `1`. Or an exception is raised. Or a performance problem. Or just being confusing.

Can you give me a concrete example for a good usage of it? (using it to patch problematic code doesn&#39;t count ;-)

When and how to use the builtin function property() in python

Which characters are allowed in GET parameters without encoding or escaping them? I mean something like this:

http://www.example.org/page.php?name=XYZ

What can you have there instead of XYZ? I think only the following characters:

 - a-z (A-Z)
 - 0-9
 - -
 - _

Is this the full list or are there additional characters allowed?

I hope you can help me. Thanks in advance!

Characters allowed in GET parameter

If I write this line in Java:

    JOptionPane.showInputDialog(null, &quot;Write something&quot;);

Which method will be called?

 - `showInputDialog(Component parent, Object message)`
 - `showInputDialog(Object message, Object initialSelectionValue)`

I can test it. But in other cases similar to this, I want to know what happens.


Which overload will get selected for null in Java?

I&#39;d like to pass a table as a parameter into a scaler UDF. 

I&#39;d also prefer to restrict the parameter to tables with only one column. (optional)

Is this possible?

**EDIT**

I don&#39;t want to pass a table name, I&#39;d like to pass the table of data (as a reference I presume)

**EDIT**

I would want my Scaler UDF to basically take a table of values and return a CSV list of the rows.

IE

    col1  
    &quot;My First Value&quot;  
    &quot;My Second Value&quot;
    ...
    &quot;My nth Value&quot;

would return

    &quot;My First Value, My Second Value,... My nth Value&quot;

I&#39;d like to do some filtering on the table though, IE ensuring that there are no nulls and to ensure there are no duplicates. I was expecting something along the lines of:

    SELECT dbo.MyFunction(SELECT DISTINCT myDate FROM myTable WHERE myDate IS NOT NULL)

Pass table as parameter into sql server UDF

How do you run the following command in PowerShell?

&gt; C:\Program Files\IIS\Microsoft Web Deploy\msdeploy.exe -verb:sync -source:dbfullsql=&quot;Data Source=mysource;Integrated Security=false;User ID=sa;Pwd=sapass!;Database=mydb;&quot; -dest:dbfullsql=&quot;Data Source=.\mydestsource;Integrated Security=false;User ID=sa;Pwd=sapass!;Database=mydb;&quot;,computername=10.10.10.10,username=administrator,password=adminpass&quot;


How to run an EXE file in PowerShell with parameters with spaces and quotes

Can we pass a parameter to a view in Microsoft SQL Server?

I tried to `create view` in the following way, but it doesn&#39;t work:  

    create or replace view v_emp(eno number) as select * from emp where emp_id=&amp;eno;



Can we pass parameters to a view in SQL?

This seems like a really simple question but somehow my Google-Fu failed me.

What&#39;s the syntax for including functions from other files in Perl?  I&#39;m looking for something like C&#39;s `#include &quot;blah.h&quot;`

I saw the option for using Perl modules, but that seems like it&#39;ll require a not-insignificant rewrite of my current code.

How do I include functions from another file in my Perl script?

I have a function(this is exactly how it appears, from the top of my file):

    &lt;?php
    //dirname(getcwd());
    function generate_salt()
    {
    	$salt = &#39;&#39;;
    	
    	for($i = 0; $i &lt; 19; $i++)
    	{
    		$salt .= chr(rand(35, 126));
    	}
    	
    	return $salt;
    }
    ...
And for some reason, I keep getting the error:

&gt; Fatal error: Cannot redeclare
&gt; generate_salt() (previously declared
&gt; in
&gt; /Applications/MAMP/htdocs/question-air/includes/functions.php:5)
&gt; in
&gt; /Applications/MAMP/htdocs/question-air/includes/functions.php
&gt; on line 13

I cannot figure out why or how such an error could occur. Any ideas?

&quot;Fatal error: Cannot redeclare &lt;function&gt;&quot;

How do you check if an include / require_once exists before you call it, I tried putting it in an error block, but PHP didn&#39;t like that.

I think `file_exists()` would work with some effort, however that would require the whole file path, and a relative include could not be passed into it easily.

Are there any other ways?

Check if an include (or require) exists

I&#39;m trying to do something like a C `#include &quot;filename.c&quot;`, or PHP `include(dirname(__FILE__).&quot;filename.php&quot;)` but in javascript. I know I can do this if I can get the URL a js file was loaded from (e.g. the URL given in the src attribute of the &lt;script&gt; tag). Is there any way for the javascript to know that?

Alternatively, is there any good way to load javascript dynamically from the same domain (without knowing the domain specifically)? For example, lets say we have two identical servers (QA and production) but they clearly have different URL domains. Is there a way to do something like `include(&quot;myLib.js&quot;);` where myLib.js will load from the domain of the file loading it?

Sorry if thats worded a little confusingly.

How to get the file-path of the currently executing javascript code

I have been trying for a few days now to make my layouts more efficient by converting from using several levels of nested `LinearLayouts` to one `RelativeLayout` and have come across a few problems that I haven not been able to find a workaround for...

I have searched the Android beginners group and this site and have not been able to find anything that would help me solve the problem.

I read on one of the blogs that you can combine layouts with merge and include tags. So what I have is a main layout file with a `RelativeLayout` root element.  Inside of that I have 5 include tags that reference 5 different xml layout files that each have a merge element for the root (all of my merge files are the same except for the ids in them). 

I am running into two problems, which I will explain after posting a simplified version of my layout code:

**Sample Main Layout File:**

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;RelativeLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:layout_width=&quot;fill_parent&quot;
        android:layout_height=&quot;fill_parent&quot;
        android:background=&quot;@drawable/translucent_gray&quot; &gt;

        &lt;include 
            android:id=&quot;@+id/running_gallery_layout_id&quot;
            layout=&quot;@layout/running_gallery_layout&quot; /&gt;

        &lt;include 
            android:id=&quot;@+id/recent_gallery_layout_id&quot; 
            layout=&quot;@layout/recent_gallery_layout&quot;
            android:layout_below=&quot;@id/running_gallery_layout_id&quot; /&gt;

        &lt;include
            android:id=&quot;@+id/service_gallery_layout_id&quot;
            layout=&quot;@layout/service_gallery_layout&quot;
            android:layout_below=&quot;@id/recent_gallery_layout_id&quot; /&gt;

        &lt;include
            android:id=&quot;@+id/process_gallery_layout_id&quot;
            layout=&quot;@layout/process_gallery_layout&quot;
            android:layout_below=&quot;@id/service_gallery_layout_id&quot; /&gt;

    &lt;/RelativeLayout&gt;
    
**Sample included merge file:**

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;merge xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;&gt;
        &lt;TextView 
            style=&quot;@style/TitleText&quot;
            android:id=&quot;@+id/service_gallery_title_text_id&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:gravity=&quot;left&quot;
            android:text=&quot;@string/service_title&quot; /&gt;

        &lt;Gallery
            android:id=&quot;@+id/service_gallery_id&quot;
            android:layout_width=&quot;fill_parent&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:layout_weight=&quot;1&quot;
            android:layout_below=&quot;@id/service_gallery_title_text_id&quot; /&gt;

        &lt;TextView 
            style=&quot;@style/SubTitleText&quot;
            android:id=&quot;@+id/service_gallery_current_text_id&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:layout_toRightOf=&quot;@id/service_gallery_title_text_id&quot;
            android:layout_above=&quot;@id/service_gallery_id&quot; /&gt;
    &lt;/merge&gt;

I am running into two problems:

1) The `android:layout_*` attributes seem to be ignored when used in the include tag and all of the merged layouts are displayed on top of each other.  According to this post ([http://developer.android.com/resources/articles/layout-tricks-reuse.html][1]) &quot;any `android:layout_*` attribute can be used with the `&lt;include /&gt;` tag&quot;

2) Since I couldn&#39;t get this working I decided to try adding an `android:layout_below` attribute to the first `TextView` item in each merge layout file, meaning that each merge file would be referencing an id from another merge layout file... For the most part this actually worked and my layout looks fine.  However, I get an error on one of the `android:layout_below` attributes saying that it can&#39;t find the id I specified... I have double and triple checked the ids to make sure they were correct.  The weirdest part is that I used the `AutoFill` feature to put the id in the attribute in the first place.

If anyone has any suggestions or workarounds I will be more than happy to try them out.  Also, if anyone can think of a way for me to just have one merge xml layout file instead of 5 that would be greatly appreciated.  I couldn&#39;t find a way to do that because I need to have access to each item in the merge layout files at runtime...


  [1]: http://developer.android.com/resources/articles/layout-tricks-reuse.html

Content Type	Original Author	Original Content on Stackoverflow
Question	Martin Magakian	View Question on Stackoverflow
Solution 1 - Java	ZZ Coder	View Answer on Stackoverflow
Solution 2 - Java	Thomas Owens	View Answer on Stackoverflow
Solution 3 - Java	McDowell	View Answer on Stackoverflow

Can I reference another property in a properties file (use ${property})

Java Problem Overview

Java Solutions

Solution 1 - Java

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Disabling radio buttons with jQuery

How to mount one partition from an image file that contains multiple partitions on Linux?

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