Reference to class List is ambiguous

Hello,
I've started to make my first java program in which I use AWT.
When I compile the file, it gave me this error:
"reference to List is ambiguous, both class java.awt.List in java.awt and class java.util.List in java.util match"
So I use some tools from the java library: java.util ( f.e. arrays)
and I use of course the library: java.awt
Now when I try to make a list:
f.e.
List data = new List(10,false);
The program doesn't know if I want to use the method List, from AWT or UTIL
In fact, I want to use this from AWT.
How can I make that clear.
Thx

It will probably work if you add "import java.awt.List;" to your imports. If that doesn't do it, you will need to specify which List when you declare or instantiate it. For example, if you now have
List list = new List(10,false);
Then change it to
java.awt.List list = new java.awt.List(10,false);

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Column in field list is ambiguous error

i am using jdbc in my program with a query statement that retrieve holdingsID by querying different tables. when i run the program it has an error saying
Column HoldingsID in field list is ambiguous, what does this mean? How can i solve it?
here is my code, included is my sql select statement please check it.
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thanks in advance for your help

Actually, this is probably going to be a bit more efficient on large scale data. (I'm guessing, if it matters then test...)
SELECT DISTINCT HoldingsID FROM
SELECT HoldingsID
FROM tblHoldings
WHERE tblHoldings.Title LIKE '%key%'
       OR tblHoldings.Contents LIKE '%key%'
UNION ALL
SELECT HoldingsID
FROM tblHoldingsAuthorName
WHERE tblHoldingsAuthorName.AuthorName LIKE '%key%'
UNION ALL
SELECT HoldingsID
FROM tblHoldingsSubject
WHERE tblHoldingsSubject.SubjectHeadings LIKE '%key%'
UNION ALL
SELECT HoldingsID
FROM tblHoldingsPublisherName
WHERE tblHoldingsPublisherName.PublicationDate = 'key'
ORDER BY HoldingsIDThe diffence is when the sort(s) to create distinct rows is done. In the first version, UNION must produce only distinct values, so three sorts must be performed, one to create each UNION intermediate result. In the 2nd version, UNION ALL doesn't produce
distinct values, we delay the sorting until the last minute and sort all candidates once, instead of one sub-set once, one sub-set twice and two sub-sets 3 times. If this is a school project, the difference probably doesn't matter.
By the way, many databases implement the DISTINCT keyword in such a way that it creates sorted result sets, sorted by the resulting column values. As far as I know, this is not guaranteed by the SQL standard, so the additional ORDER BY clause is still needed for rigourous portability to databases that don't work that way. If that's not a concern and speed is, in many situations you can drop the ORDER BY; however for small result sets the difference is nearly invisible, and even for moderately large result sets, sorting an already sorted result set is usually an Order(n) in-memory operation. For really big results, the database will be swapping results to disk as it sorts and this sort of optimization matters then. This also applies to the use of GROUP BY.

How do I reference a class in a .dll library?

How do I reference a class in a .dll library? The following code extracts the contents of a ListView after a line is MouseDoubleClick:
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I want to move this code (not the class) into a library .dll. The .dll is generic ... could be called by any namespace. It needs to know about the ListViewTabs class in this example.
bhs67

>>How do I reference a class in a .dll library?
You add a reference to the .dll (https://msdn.microsoft.com/en-us/library/wkze6zky.aspx?f=255&MSPPError=-2147217396) and add a using statement for the namespace
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using YourNameSpace;
>>I want to move this code (not the class) into a .dll.
The method must be put into some class. You could create a class in the class library and put the method in there:
namespace YourNameSpace
public class YourClass
static public void GetListViewValues(object sender, List<string> liststListViewValues)
ListViewItem lvi = sender as ListViewItem;
ListViewTabs obj = lvi.DataContext as ListViewTabs;
liststListViewValues.Add(obj.tabNumber);
liststListViewValues.Add(obj.tabDetails);
public class ListViewTabs
public string tabNumber { get; set; }
public string tabDetails { get; set; }
>>The .dll is generic ... could be called by any namespace.
Every class belongs to a namespace (potentially the global (or unnamed) namespace) in C#.
>>It needs to know about the ListViewTabs class in this example.
If the method in the .dll needs to know about the ListViewTabs class you must put the ListViewTabs class into the same .dll or create another .dll, put the ListViewTabs class there and then add a reference to this .dll from the one containing your method.
You cannot keep the ListViewTabs class in the WPF application project from which you add a reference to the .dll that contains the method because you cannot add a reference from A to B and from B to A as this will lead to a circular dependency.
Hope that helps.
Please remember to close your threads by marking helpful posts as answer and please start a new thread if you have a new question.

How to reference a class without using the new keyword

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ContactInfo c = new ContactInfo(); // problem is here because it erases the info in the class
c.getFirstName();

quedogf94 wrote:
I need to access some information from a class using the getter, but I don't want to use the new keyword because it will erase the information in the class. How can I reference the class without using the new keyword.
ContactInfo c = new ContactInfo(); // problem is here because it erases the info in the class
c.getFirstName();No.
Using new does not erase anything. There's nothing to erase. It's brand new. It creates a new instance, and whatever that constructor puts in there, is there. If you then change the contents of that instance, and you want to see them, you have to have maintained a reference to it somewhere, and access that instance's state through that reference.
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}

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if your still following.
i tried a simpler way
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Hi, I have following scenario. During compilation I am gettting error message -- "cannot resolve symbol - symbol : Variable myZ"
CODE :
under package A.1;
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some corrections ...
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Revision: 20651
Revision: 20651
Author:   [email protected]
Date:     2011-03-07 12:21:11 -0800 (Mon, 07 Mar 2011)
Log Message:
Some MBean tests needed flex.management.jmx stuff in the allow classes list for the class deserialization validator so adding it in on BlazeDS 4.0.0_fixes.
Modified Paths:
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I cant believe this little comment has been so helpful!
But yes it is:
I explain, despite my efforts to find, googled it, forums, faqs, etc...
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Your comment "a zip" made me attempt to open it with winrar, and I found a manifest.fm file inside!
So far I was editing the one at the "source" of my project and rebuilding it with netbeans.
I am going to try that now.
Actually.... :( no its mentionning my main class!
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.0
Created-By: 10.0-b19 (Sun Microsystems Inc.)
Main-class: courseworkjava3d.Simple3D
Class-Path:
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http://www.uploading.com/files/CM2LKWYU/BetaCourseworkJava3d_Final.jar.html
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Edited by: CupofTea on Apr 13, 2008 3:28 AM

[svn:bz-trunk] 20650: Some MBean tests needed flex.management. jmx stuff in the allow classes list for the class deserialization validator so adding it in on BlazeDS trunk .

Revision: 20650
Revision: 20650
Author:   [email protected]
Date:     2011-03-07 12:20:03 -0800 (Mon, 07 Mar 2011)
Log Message:
Some MBean tests needed flex.management.jmx stuff in the allow classes list for the class deserialization validator so adding it in on BlazeDS trunk.
Modified Paths:
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Thank you very much!
I cant believe this little comment has been so helpful!
But yes it is:
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Your comment "a zip" made me attempt to open it with winrar, and I found a manifest.fm file inside!
So far I was editing the one at the "source" of my project and rebuilding it with netbeans.
I am going to try that now.
Actually.... :( no its mentionning my main class!
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.0
Created-By: 10.0-b19 (Sun Microsystems Inc.)
Main-class: courseworkjava3d.Simple3D
Class-Path:
X-COMMENT: Main-Class will be added automatically by buildWell I have no problems uploading you the .jar, it is for a coursework it is not a private project or whatever:
http://www.uploading.com/files/CM2LKWYU/BetaCourseworkJava3d_Final.jar.html
Oh and I felt on your comment "dont ask us" as if I was suppose to know... i'm a beginner, I did not know that! And I tried to give you so many infos so you dont lose your time if you want to help, especially as after my own research I found many, many results for this "main class" and I tried a few solutions!
Edited by: CupofTea on Apr 13, 2008 3:28 AM

10.1.3.2.0 Mac OSX Freezes building class list

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Can I reference static class vars via a string?

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Hello chymes,
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Hi,i have table in SQL Server named Employees as follows:
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Almir

Hello Fred,
unfortunately it does not work, maybe I can be more specific about what I'm trying to get. I'm following Josh Smith's article on CodeProject related to WFP TreeView
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public class Person
readonly List<Person> _children = new List<Person>();
public List<Person> Children
get
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my first post named Employees (it's self reference table)

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When i use Preserve Run-Time Class function the Vi becomes executable
but it creates some allocations. Labview creates copy of data object
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I attached the project.
Could you help me please
thank you so much.
Pascal
Attachments:
RefTest.zip ‏476 KB

Yes, it helps but there is one thing that isn't being replicated which is the possibility to remove the link from the generated editor.
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class Class extends Resource {
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Regards

Reference to class List is ambiguous

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