Return an Attribute as an equivilent string?

I'm new to java (I bet you all hear that one lots...) and I'm struggling with types and casting (I think).
The sub/function/method below works just fine and displays the value of the attribute on screen - but I would like to return it to the call.
That's where I'm running into trouble.
               static private String findPTR (String atc) {
               String toReturn = null;
               String toLookup = ReverseOctets(atc)+".in-addr.arpa";
               System.out.println("PTR LOOKUP QUERY IS:" + toLookup);
               try {
               Hashtable<String,String> env = new Hashtable<String,String>();
               env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
               DirContext ctx = new InitialDirContext(env);
               Attributes attrs = ctx.getAttributes(toLookup,new String[] {"PTR"});
               Attribute attr = attrs.get("PTR");
               System.out.println("The value of PTR is: " + attr);//this works as expected
               toReturn = attr;//this throws a compile error
               ctx.close();
          catch(Exception e) {
               toReturn ="NO REVERSE DNS";
     return toReturn;
     }The error is:
inconvertible types
found : javax.naming.directory.Attribute
required: java.lang.String
String Testx = (String)attrs.get("PTR");
I tried a rather amateur attempt to cast it:
String Testx = (String)attrs.get("PTR");
That also gives me the same error. So I'm guessing {doh} the types are incompatible. All I want to do is return the value held in attr as a primitive string. Can this be done? What am I missing ?

Fantastic - really appreciate your help, that has it licked :-)
               static private String findPTR (String atc) {
               String toReturn;
               String toLookup = ReverseOctets(atc)+".in-addr.arpa";
               try {
               Hashtable<String,String> env = new Hashtable<String,String>();
               env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
               DirContext ctx = new InitialDirContext(env);
               Attributes attrs = ctx.getAttributes(toLookup,new String[] {"PTR"});
               Attribute attr = attrs.get("PTR");
                    if (attr == null) {
                    toReturn ="NULL REVERSE DNS";
                    } else {
                    toReturn = attr.toString();
               ctx.close();
          catch(Exception e) {
               toReturn ="NO REVERSE DNS";
     return toReturn;
     }Thanks for your time and advice. The U/C variable was to make it stand out to me (I have some odd ways of debugging). I've added a line to check for null. I'm slightly confused as I though the try/catch would have caught this (I've tried it on something that has no PTR and the catch bites it), but that said, it does not hurt to have another check in case :-)
Again - many thanks.

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SET NOCOUNT ON;
USE tempdb;
GO
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Category varchar(50)
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('Sys_id3', 'Negotiate'),
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pos int,
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(SELECT A.Category AS [text()] FOR XML PATH('')) AS B(c)
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CROSS APPLY
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SELECT
', ' + C.Category_Name
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ORDER BY
B.pos
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AMB
Some guidelines for posting questions...

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Your workaround is probably the best you can come up with if you want to stick to this approach.
Extractvalue() function works too but it is SQL only.
However, bear in mind that those functions are deprecated in your version.
Use XMLQuery to extract scalar values or XMLTable to extract multiple values as relational columns.

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Return an Attribute as an equivilent string?

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