JLabel constructor call problem

Hello,
I've problem with calling JLabel's constructor with passing String value to constructor.
jobject jobjLabel;
jclass JLabelClass;
jmethodID mid;
JLabelClass = (*env)->FindClass(env,"javax/swing/JLabel");
if(JLabelClass == NULL) {
printf("Can't find class JLabel\n");
goto destroy;
mid = (*env)->GetMethodID(env,JLabelClass,"<init>","(Ljava/lang/String;)V");
jobjLabel = (*env)->NewObject(env,JLabelClass,mid,"Hello World");At line:
jobjLabel = (*env)->NewObject(env,JLabelClass,mid,"Hello World");Main Thread exits with error code 1. I am sure that this line is true but I didn't find problem.
Are there any methods to find errors before program exit?

Probably I've found. I must pass constructor value as String object. Am I wrong?
But Are there any methods to find our errors before program exit?
Thanks in Advance

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Constructor calling problem

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I've put such code into Ball.java and still get the same compile-error:
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
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Multiple times constructors calling in Myfaces

Hi
i m fasing multiple times constructor calling for myfaces programs
i have created a small web appl. with one text box and one submit button, to test this behaviour.
i have used this sample to
get web page
enter some text value
submit the page
and atlast page get returned to me
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Following are details -
faces-config.xml
<managed-bean>
<managed-bean-name>fileUploadBean</managed-bean-name>
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Output to Console
Calling Constructor...
Calling Getter...
Calling Constructor...
Calling Constructor...
Calling Getter...
Calling Constructor...
Calling Setter...
Calling Constructor...
Upload Form Submitted...
Calling Constructor...
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Hi
that blog was really good and in depth...
but i have one real time problem with multiple time constructor calling
if you replace text box with file upload tag in my earlier sample program and then following is out put ...
Calling Constructor...
getUploadedFile()...
Calling Constructor...
getUploadedFile()...
Calling Constructor...
setUploadedFile()...
Uploaded File Name - D:\AsnUploadTemplate02.XLS
Calling Constructor... ------------------(.1
Upload Form Submitted...
java.lang.NullPointerException
at com.dbschenker.dts.model.backingbean.FileUpload.uploadFile(FileUpload.java:40)
----------- trailing exception stack trace...
Calling Constructor...
getUploadedFile()...
form this output u can find that my UploadedFile backing bean object gets null just before form submit method...
whereas its has been properly instantiated in setter method,
if constructor (1 wasn't call then object (uploadedFile) can be found in method (FileUpload.uploadFile)
i have also tried to make scope of backing bean Session , but constructor, getter & setter calling sequence doesn't different even after.
i have also considered both of your blog as ---
http://balusc.blogspot.com/2006/09/debug-jsf-lifecycle.html
http://balusc.blogspot.com/2008/02/uploading-files-with-jsf.html
but my problem stands as it is
kindly help

Oracle Object Type Constructor Called Multiple Times

I have an object type with a custom constructor. In SQL, when I reference the attributes the constructor is called multiple times in Oracle 11.2.0.4.
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