Struts String Array problem:

Hello All,
I'm working on a DynaValidatorForm in struts and I'm not able to define my string arrays without compile errors in WSAD 5.0 and it doesn't work right with the validator for those two items. WSAD 5.0 uses a 1.3 beta version of struts and that may be the problem or it may be a bug in the validator. Not sure which. This is what I have in the struts-config.xml file for the form-bean:
<form-beans>
<form-bean name="submitDynaValidateForm"
type="org.apache.struts.validator.DynaValidatorForm">
<form-property name="lastName"     type="java.lang.String"/>
<form-property name="address"      type="java.lang.String"/>
<form-property name="sex"      type="java.lang.String"/>
<form-property name="married"      type="java.lang.String"/>
<form-property name="children"      type="java.lang.String[]"/>
<form-property name="age"      type="java.lang.String"/>
<form-property name="interests" type="java.lang.String[]"/>
</form-bean>
</form-beans>
Anyone come across this problem before and do you know how to solve it other than doing the validation for the String Arrays in the Action class?
Thanks,
James

I don't know how to solve it, but I'd wonder about the need to validate the array of Strings. I think that should just be a String type.
If you have String arrays to populate a drop-down list, I think the assumption has to be that the drop-down has been populated properly. There's no need to re-check it every time. Even if the list is changing, because its contents are driven by another selection, the responsibility for getting those values correct lie outside the validator's domain.
And since the single selection that's actually sent as input comes from an array of valid values, there's no opportunity for the user to send an invalid value.
I think the validation framework is for checking manual, typed user input to make sure they're the correct types, no typo errors, etc.
Business validity is another matter that the Struts validation framework shouldn't address. Those business rules belong on the middle tier, IMO.

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Cheers & Regards
sweety

The name in getAttributre doesnt match the name in setAttribute.
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Here is your code:
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Problems declaring string array.

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You can initialize a newly declared variable outside of a method/constructor/initializer block, but you can't call other statements outside of these blocks. The rotor array is declared here: String[] rotor... and can only be initialized (if at all) on this line.

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Problems with string arrays

Previous task was:
Write a class "QuestionAnalyser" which has a method "turnAnswerToScore". This method takes a String parameter and returns an int. The int returned depends upon the parameter:
parameter score
"A" 1
"B" 2
"C" 3
other 0
Alright, here's the recent task:
Write another method "turnAnswersToScore". This method takes an array of Strings as a parameter, works out the numerical score for each array entry, and adds the scores up, returning the total.
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class QuestionAnalyser{
public static int Score;
public String[] Answer;
public static void main(String[] args) {}
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for (int i = 0; i < Answer.length;i++) {
if (Answer.equals("A")) {
Score = Score + 1; }
else if (Answer[i].equals("B")) {
Score = Score + 2;}
else if (Answer[i].equals("C")) {
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else {
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return Score;
this is the error message I get:
The results of trying to compile your submission and run it against a set of test data was as follows:
----------Compilation output--------------------------------------
javac QATest2.java
QATest2.java:15: cannot resolve symbol
symbol : method turnAnswersToScore (java.lang.String[])
location: class QuestionAnalyser
if(qa.turnAnswersToScore(task)!=total){
^
What went wrong?
Suggestions would be greatly appreciated!

If I declare int score in the method i get this message
The results of trying to compile your submission and run it against a set of test data was as follows:
----------Compilation output--------------------------------------
javac QATest2.java
./QuestionAnalyser.java:20: variable score might not have been initialized
score++; }
^
./QuestionAnalyser.java:23: variable score might not have been initialized
score++;
^
./QuestionAnalyser.java:27: variable score might not have been initialized
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4 errors
----------Sorry expected answer was-------------------------------
The method turnAnswersToScore is working OK - well done!
----------Your answer however was---------------------------------
Exception in thread "main" java.lang.NoClassDefFoundError: QuestionAnalyser
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This is the message I get from the submission page, but trying to compile it I get the same messages.
The code looks like this, then
class QuestionAnalyser{
String[] answer;
public static void main(String[] args) {}
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int score;
for (int i = 0; i < answer.length; i++) {
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score++; }
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score++;
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score++;
score++;
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The results of trying to compile your submission and run it against a set of test data was as follows:
----------Compilation output--------------------------------------
javac QATest2.java
----------Sorry expected answer was-------------------------------
The method turnAnswersToScore is working OK - well done!
----------Your answer however was---------------------------------
wrong answer in turnAnswersToScore for
BDCAADDCA
Alright, even university students need to sleep :-)
Good night.

Getting one character at a certain position from a string array

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about in the programming of th
is constant. I must be over looking
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Sent via Deja.com http://www.deja.com/
Before you buy.

[email protected] wrote:
> Is there an elegant way of marking the last element in a string array
> constant? i.e. I take an Array constant, and add a simple string to it,
> so that it becomes a String Array Constant
Arrays must be all the same type. If the last element is a constant, all
elements are
> Now I add elements 1 and 2
> and 3. But now I want to take element 3 out. If I just delete Element 3
> contents from the string control, that is fine, but the # of Array
> elements is still 3. It is just that the 3rd elelment is null.
In a string, yes, Empty strings are essentially nulls.
> How can I
> make the array length 2? Now I know that starting over is one option
> (just creat a new array constant, and add the two elements) but what if
> my array cons
tant has 100 elements and I want to make it 99. I also
> know that programatically I can remove these elelents, but I am taking
> about in the programming of this constant. I must be over looking
> something... Any ideas???
This is one of my problems. It is easy to size an array up, but hard to size
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Kevin Kent
Attachments:
Kevin.Kent.vcf ‏1 KB

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Something you might want to be looking at for the future is migrating to a structure where the data is stored in a 1D array, where each element is a cluster contain the data that's now in a single row. This would be the most straight-forward change, but could make getting at the data tricky, depending on how you need to be able to search it.
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Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

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Thanks for your help and your attention
Pedro

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Cheers,
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Go to Solution.
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Hi proph,
I made a small subtile change to yur VI and now it replaces all values of the 4th column…
THINK DATAFLOW!
Use shift registers when you need to propagate values from one loop iteration to the next!
USE/LEARN DEBUGGING TECHNIQUES!
There are tools like probes and highlight to understand your VI execution and to find problems…
Go through all those free online courses offered by NI!
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I Have Problem Calling An Oracle(8i) Stored Procedure That Returns Array Type (Multi Rows)
(As Good As String Array Type..)
In This Fourm, I Can't Find Out Example Source.
(Question is Exist.. But No Answer..)
I Want An Example,, Because I'm A Beginner...
(I Wonder...)
If It Is Impossible, Please Told Me.. "Impossible"
Then, I'll Give Up to Resolve This Way.....
Please Help Me !!!
Thanks in advance,

// Try the following, I appologize that I have not compiled and run this ... but it is headed in the right direction
import java.sql.*;
class RunStoredProc
public static void main(String args[])
throws SQLException
try
Class.forName("oracle.jdbc.driver.OracleDriver");
catch(Exception ex)
ex.printStackTrace();
java.util.Properties props = new java.util.Properties();
props.put("user", "********"); // you need to replace stars with db userid
props.put("password", "********"); // you need to replace stars with userid db password
// below replace machine.domain.com and DBNAME, and port address if different than 1521
Connection conn =
DriverManager.getConnection("jdbc:oracle:thin:@machine.domain.com:1521:DBNAME", props);
// replace "Your Stored Procedure" with your stored procedure
CallableStatement stmt = conn.prepareCall("Your Stored Procedure");
ResultSet rset = stmt.execute();
while(rset.next())
System.out.println(rset.getString(1));

External java function that should return String array

Hi everyone,
I have a split function in plsql that takes 10 times longer a java tokenizer function that i was written. So, i want to use java external function to split my plsql strings into pieces.
I can write a java external procedure that returns types like int, float and String types. I have no problem about it.
My problem is returning an array of strings. I found a book that has an example about how can we get directory list in plsql with java external procedure.
(code)
import java.io.File;
import java.sql.*;
import oracle.sql.*;
import oracle.jdbc.*;
public class JFile {
public static oracle.sql.ARRAY dirlist (String dir)
throws java.sql.SQLException
Connection conn = new OracleDriver().defaultConnection( );
ArrayDescriptor arraydesc =
ArrayDescriptor.createDescriptor ("DIRLIST_T", conn);
File myDir = new File (dir);
String[] filesList = myDir.list( );
ARRAY dirArray = new ARRAY(arraydesc, conn, filesList);
return dirArray;
CREATE OR REPLACE FUNCTION dirlist (dir IN VARCHAR2)
RETURN dirlist_t
AS
LANGUAGE JAVA
NAME 'myFile.dirlist(java.lang.String) return oracle.sql.ARRARY';
(code)
I could compile this source file in localhost but not remotehost. There are jar files ( import oracle.sql.*; import oracle.jdbc.*; ) that should be added to remote classpath. ( others have already added java classpath ). But, which classpath i should add? Oracle has own JVM and Classpath, probably i should upload these jar files to oracle classpath. Am i wrong? How can i do? Can you explain in detail? How can i return string array from java external function in Oracle ?
I am using Oracle 11.1.0.7 on Solaris Sparc Machine.

Hi,
What do you mean "compile in remote host"
Aren't you using the loadjava tool? - that should be enough, the RDBMS already "has" the jars needed.
[A must read|http://download.oracle.com/docs/cd/B28359_01/java.111/b31225/chone.htm#BABCFIIF]
Regards
Peter

Struts String Array problem:

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