Calling every class in a folder?

My problem is such:
Short version: I would like to extract every java class in a given package (and sub-packages) and create an instance if each one. I can make sure each class I put in this package is able to be instantiated.
Longer version: The goal is for a testing framework, where someone can create a test (by creating a class that inherits the "ProjectTest" class and having a "testBody" method within that class define the pass/failure of the test, after executing a set of determining actions[selenium scripts, if you must know]) , drop it in a folder, and the testing framework will be able to grab all tests that are in the folder, and run them.
I guess that's not the problem, however. The problem is that... I don't know how to do this. Any direction pointing would be helpful.
Thanks!

No testing framework out there does precisely what I need, in precisely the way that I need it done, and there is a rather large amount of code (tests) already in existence that would need to be converted to Junit's peculiarities, of which I am not being given the time to do.
Everything I want this test framework to do is currently working, with this single exception. Currently, each test is manually called, and when a new test is created, the test has to be manually added to an ArrayList. This is working as well, however I would rather not have to make code changes every time a new test is added.
So my original question remains: how do I instantiate an object of each class in a given package (and sub-packages, recursively)?
Edited by: cjd2426 on Jan 21, 2009 7:33 AM

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Unable to call Java class method within Embedding Java Activity in BPEL

Hi ,
I have written Java Class named 'Class3' .
When I am creating and trying to call these classes whithin Embedding Java Activity , compile time error is coming. Compiler is not finding class . Error message is like this one.
uildfile: C:\Oracle\Middleware\jdeveloper\bin\ant-sca-compile.xml
scac:
[scac] Validating composite : 'C:\JDeveloper\mywork\Application7\Embedded15\composite.xml'
[scac] C:\JDeveloper\mywork\Application7\Embedded15\SCA-INF\bpel\BPELEmbedded15\src\orabpel\bpelembedded15\ExecLetBxExe0.java:73: cannot find symbol
[scac] symbol : class Class3
[scac] location: class orabpel.bpelembedded15.ExecLetBxExe0
[scac] C:\JDeveloper\mywork\Application7\Embedded15\SCA-INF\bpel\BPELEmbedded15\src\orabpel\bpelembedded15\ExecLetBxExe0.java:73: cannot find symbol
[scac] symbol : class Class3
[scac] location: class orabpel.bpelembedded15.ExecLetBxExe0
[scac] Note: C:\JDeveloper\mywork\Application7\Embedded15\SCA-INF\bpel\BPELEmbedded15\src\orabpel\bpelembedded15\BPEL_BIN.java uses unchecked or unsafe operations.
[scac] Note: Recompile with -Xlint:unchecked for details.
[scac] FATAL_ERROR: location {ns:composite/ns:component[@name='BPELEmbedded15']}(20,36): Failed to compile bpel generated classes.
[scac] failure to compile the generated BPEL classes for BPEL process "BPELEmbedded15" of composite "default/Embedded15!1.0"
[scac] The class path setting is incorrect.
[scac] Ensure that the class path is set correctly. If this happens on the server side, verify that the custom classes or jars which this BPEL process is depending on are deployed correctly. Also verify that the run time is using the same release/version.
[scac]
BUILD FAILED
C:\Oracle\Middleware\jdeveloper\bin\ant-sca-compile.xml:264: Java returned: 1 Check log file : C:\JDeveloper\mywork\Application7\Embedded15\SCA-INF\classes\scac.log for errors
Total time: 8 seconds
I am creating Class3 directly in Application Resources folder indide Project Folder in Jdeveloper without creating any package. Code of the class is .......
public class Class3 {
public Class3() {
super();
public String getValue(){
return "BBBBBBB";
Can any one help?
Regards
Yogendra Rishishwar
9867927087

Hi ,
In your java project frm jdev..right click and choose general and then choose deployment profiles and then choose Jar ..and then give some appropriate name(abc) and then click ok.
Then under resources file u get a abc.deploy file right click and say deploy to jar ..u will find the jar in that director.Now include this jar in your prjct libraries.
have a look at the link http://niallcblogs.blogspot.com/search/label/embedded%20Java

How can we call a class file of one package for class file of another

How can we call a class file of one package from class file of another package and both packages exist in a same folder

How can we call a class file of one package from
class file of another package and both packages exist
in a same folder
Luckily they don't so it's really not a problem after all.

Calling up class methods

I suffer problems understanding how to call up class methods from within my programs and would like to see further examples of coding and a lending hand with the problem below, program one ProductClass works out stock item lines of a product, the program then needs to ask for the StaticProduct Class(the second program attached) to check for a valid barcode length and for how many odds and even numbers are within it a valid barcode would be 5000127062092
I would very much appreciate some help:
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* and give a summary of values at the end
* @author (Jeffrey Jones)
* @version (version 2 5th April 2003)
public class ProcessProduct
public static void main(String args[])
StaticProduct Product = new StaticProduct();
//declare variables
String manuf;
String name;
int sLength;
String p;
String barcode;
int price;
int quantity;
int totalPrice=0;
int transactions=1;
int totalQuantity=0;
int totalValue=0;
int averageCost=0;
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System.out.print("Enter Product Manufacturer : ");
manuf = UserInput.readString();
//start of while loop checking for 0 to exit loop
while (!manuf.equals("0"))
System.out.print("Enter Product Name : ");
name = UserInput.readString();
System.out.print("Enter Bar Code : ");
barcode = UserInput.readString();
//check for invalid data
if (StaticProduct.isValidBarcode(barcode))
{barcode = new code();
p = new Product("manuf","name","quantity","price");
}//closing bracket of if
else
{//error handling
}//closing bracket of if
//check for quantity input and errors
System.out.print("Enter Quantity : ");
quantity = UserInput.readInt();
if (quantity<=0)
{ System.out.print(" Error, invalid value ");
System.exit(0);
}// check for invalid entries
System.out.print("Enter Price :");
price = UserInput.readInt();
//check for price input and errors
if (price<=0)
{ System.out.print(" Error, invalid value ");
}// check for invalid entries
//total price value
totalPrice=price*quantity;
//Output of correctly inputted data
System.out.println(manuf+":"+name+":"+barcode+":"+price);
System.out.println(quantity+" @ "+price+" = "+totalPrice);
//update variables quantities
//update total quantity
totalQuantity = (totalQuantity + quantity);
//keep count of total value
totalValue = (totalValue + totalPrice);
//keep count of totqal no of transactions
transactions = (transactions++);
//Input Details
System.out.print("Enter Product Manufacturer : ");
manuf = UserInput.readString();
}//closure of loop
//display final totals
System.out.println("Transactions: "+transactions);
System.out.println("Total quantity: "+totalQuantity);
System.out.println("Total value: "+totalValue);
System.out.println("Average Cost: "+totalValue/totalQuantity);
System.exit(0);
}//closing bracket input and output of data
}//end class
* Write a description of class StaticProduct here.
* @author Jeffrey Jones
* @version 1 1st April 2003
public class StaticProduct
* isValidBarcode method - to check for correct barcode and length
* @return boolean
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barcode = new barcode();
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System.out.println("Invalid barcode " + barcode + " not 13 characters");
return false;
}//if
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if ( ! Character.isDigit( barcode.charAt(i) ) ){
System.out.println("Invalid barcode " + barcode + " not all digits");
return false;
}//if
}//endfor
int sum1 = 0; // Sum first + third + etc.
for ( int i = 0; i < barcode.length() - 1; i += 2 ){
sum1 += barcode.charAt(i) - '0';
}//endfor
int sum2 = 0; // Sum second + fourth + etc.
for ( int i = 1; i < barcode.length() - 1; i += 2 ){
sum2 += barcode.charAt(i) - '0';
}//endfor
int check = sum1 + 3 * sum2; // 1st sum + three times 2nd sum.
check = check % 10; // Remainder on division by 10.
if ( check != 0 ){
check = 10 - check;
}//endif
if (check != barcode.charAt(12) - '0'){
System.out.println("Invalid barcode " + barcode + " check digit error");
}//endif
return ( check == barcode.charAt(12) - '0' );
}//end isValidBarcode
public static void main(String[] argv) {
System.out.println(isValidBarcode("1234567890123"));
System.out.println(isValidBarcode("123"));
System.out.println(isValidBarcode(""));
System.out.println(isValidBarcode("5018374496652"));
}//end main
}//end class

Read through your text book or some java tutorials from this site to understand what classes are, what are methods, etc.
Your program is full of wrong initializations (as you rightly said you dont understand how to call up class method I would add that you dont understand how to call classes and what do they return e.g.
You have declared
String p;
then you go ahead and do this
p = new Product("manuf","name","quantity","price"); This is syntax for calling a class is this class returning a String? :s
Please go through the basics of Object Oriented Programming and then start with the coding part else you will face such very many difficulties and waste more time of yours in just coding with no results.
Look for the tutorials on this site and read through them and do example as given in them.

Compiling a class calling another class

Hi,
I have a problem with running an applet.
my applet contains a thread and calls another class.
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thank you for your help.

Hi friend,
How you solved this problem? can u please explain me
too...
I've an error while compiling my java file. cannot
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where my two java files are...
StudentBean.java
public class StudentBean
public static void main(String args[])
Student s = new Student();
Student.java
public class Student
String id,name;
public Student(String id,String name)
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Thanking you,
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B1if Call Java Class

I am attempting to call a java class using the Call Java Class atom.
Java Class Name: full name of the java class to be called (boldjar must be available in the B1i base pathbold)
Where is the B1i base path?
I have created a simple java class the implements Callable that simply returns 1.
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Well I found this under Control Center -> Development -> BPC Reference
User defined Java-Classes for the Call-Atom via the 'Callable' interface
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I just searched the entire BizStore for com.sap.b1i.bizprocessor.Callable but was unable to find it.
I also searched Google for com.sap.b1i.bizprocessor.Callable and it only come up with my posts.
I also searched the SAP Partner Portal, and SAP SDN with no avail.
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After you put the jar containing the class to import into the WEB-INF/lib directory, you still need to include it in the jsp.
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Send me you e-mail i cannot post the code that is used in the view.htm.
Best Regards,
Caíque Escaler
Edited by: Caíque Escaler on Nov 26, 2010 5:00 PM

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          Combobox aCombobox;
          aCombobox = new Combobox();
          frame.add("Center", aCombobox);
          frame.setSize(aCombobox.getSize());
          frame.addWindowListener(new java.awt.event.WindowAdapter() {
               public void windowClosing(java.awt.event.WindowEvent e) {
                    System.exit(0);
          frame.setVisible(true);
     } catch (Throwable exception) {
          System.err.println("Exception occurred in main() of Combobox");
          exception.printStackTrace(System.out);
* Insert the type's description here.
* Creation date: (11/17/2001 2:16:11 PM)
* @author:
class Panel extends java.awt.Panel {
* Panel constructor comment.
public Panel() {
     super();
     initialize();
* Panel constructor comment.
* @param layout java.awt.LayoutManager
public Panel(java.awt.LayoutManager layout) {
     super(layout);
* Called whenever the part throws an exception.
* @param exception java.lang.Throwable
private void handleException(java.lang.Throwable exception) {
     /* Uncomment the following lines to print uncaught exceptions to stdout */
     // System.out.println("--------- UNCAUGHT EXCEPTION ---------");
     // exception.printStackTrace(System.out);
* Initialize the class.
/* WARNING: THIS METHOD WILL BE REGENERATED. */
private void initialize() {
     try {
          // user code begin {1}
          // user code end
          setName("Panel");
          setLayout(null);
          setSize(260, 127);
     } catch (java.lang.Throwable ivjExc) {
          handleException(ivjExc);
     // user code begin {2}
     // user code end
* main entrypoint - starts the part when it is run as an application
* @param args java.lang.String[]
public static void main(java.lang.String[] args) {
     try {
          java.awt.Frame frame = new java.awt.Frame();
          Panel aPanel;
          aPanel = new Panel();
          frame.add("Center", aPanel);
          frame.setSize(aPanel.getSize());
          frame.addWindowListener(new java.awt.event.WindowAdapter() {
               public void windowClosing(java.awt.event.WindowEvent e) {
                    System.exit(0);
          frame.setVisible(true);
     } catch (Throwable exception) {
          System.err.println("Exception occurred in main() of java.awt.Panel");
          exception.printStackTrace(System.out);
* Insert the method's description here.
* Creation date: (11/17/2001 2:18:36 PM)
public void paint(Graphics g) {
/* Here's the error:
C:\Test.java:389: non-static method readCombo() cannot be referenced from a static context
     System.out.println(Test.lerCombo());*/
     System.out.println(Test.readCombo());

Is it possible to call a class method using pattern in ABAP editor.

Hi,
Is it possible to call a class method using pattern in ABAP editor.
Thank U for Ur time.
Cheers,
Sam

Yes,
Click patterns.
Then choose Abap objects patterns.
Click on the Tick
It will give a new screen
Here Give the name of the class first.
Then the object (instance of the calss)
And finally the method ..
it will give you the pattern
Hope this helps.

Is it possible to call a class in a jar file from JNI environment?

Hi
Is it possible to call a class in a jar file from JNI environment?
Thanks in advance.

Could you explain a bit more what you are trying to do? (In other words, your question is vague.)
o If your main program is written in C, you can use JNI to start a JVM, load classes from the jar of your choice, and call constructors and methods of the objects defined in the jar.
o If your main program is java, and has been laoded from a jar, a JNI routine can call back into java to use the constructors and methods of classes defined in the jar(s).

How to call java class file from jsp

hi
we need to call java classes (which are written separately in .java file )from jsp file. we need it for our project if anyone knows about please reply us.
bye
siva sankari

you can call the methods in a lot of ways. you could use scriptlets with the
<%@ page import="package.class"%> and then inside instantiate an object
<%
MyClass mc = new MyClass(parameters if any);
mc.theMethodYouWantToCall();
%>or as Madathil has stated,
or use the JSP tags
<jsp:useBean id="anyname" class="classname"/>and then use the getProperty tag
or even Custom Tags

Calling java class from jsp page

Dear Friends.
I wrote jsp page and java class.
Am calling java class from jsp page. after processing result,
I have to refresh jsp page from java class.
processing time may take 5 minutes or 1 minute etc. that depends on user.
Can It be possible ? if possible , How ?

Ok, I get a very strange error now:
org.apache.jasper.JasperException: Unable to compile class for JSPerror: An error has occurred in the compiler; please file a bug report (http://java.sun.com/cgi-bin/bugreport.cgi).
What is this??? Anyone?

How to call a class from a method ?

Hi,
I have a Connection class and another class called 'B' class.
class Connection {
public static void main (String args[]) {
try{
Class.forName("...jdbcDriver...);
String url="jdbc:...//localhost:.../DBName";
Connection con=DriverManager.getConnection(url,"...","...");
Statement stmt=con.createStatement();
}catch (Exception e) {e.printStackTrace();}
class B {
public void someMethod {
How do I call the Connection class to do this ?
stmt.executeQuery(query);
Thanks a lot !
Phil

Thanks !
class Connection {
public returnType Connection{
Statement stmt=con.createStatement();
return stmt;...
...main {
class B {
public someMethod {
Connection conn = new Connection();
conn.Connection.executeQuery(query);
woah - what is that??
And why make a new Connection here, I thought you did that in your Connection class (which is not a good choice of names, by the way, since it matches the name of the java.sql.Connection interface)
Is this what you mean ? But, what is the returnType
above ?You intend to return your stmt reference, right? So, the return type of that method has to match the type of thing you are returning, which is Statement.
>
Thanks !
Philip

EJB is not throwing exception to calling Action class in Unix environment

Hi
We are using Weblogic Server 9.2.3.0.
One of our EJB is not throwing exception to calling Action class in Unix environment. Its working fine in Windows.
Somehow the EJB is swallowing the exception.
any idea? I suspect it may be environmental issue?
thank you

Hi
We are using Weblogic Server 9.2.3.0.
One of our EJB is not throwing exception to calling Action class in Unix environment. Its working fine in Windows.
Somehow the EJB is swallowing the exception.
any idea? I suspect it may be environmental issue?
thank you

Calling every class in a folder?

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