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What could be the cause of this Error.Am trying to insert data using Java persistence Api.

run:

[EL Info]: 2013-06-10 03:58:00.961--ServerSession(116252)--EclipseLink, version: Eclipse Persistence Services - 2.3.2.v20111125-r10461

[EL Severe]: 2013-06-10 03:58:02.638--ServerSession(116252)--Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

---------------------------------------------------------

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Exception in thread "AWT-EventQueue-0" javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Runtime Exceptions:

---------------------------------------------------------

Descriptor Exceptions:

[EL Severe]: 2013-06-10 03:58:02.653--ServerSession(116252)--Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

---------------------------------------------------------

---------------------------------------------------------

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

---------------------------------------------------------

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

---------------------------------------------------------

      at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:517)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:294)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:272)

      at database.Entity.init(Entity.java:22)

      at employee.LogAccount.jButton1ActionPerformed(LogAccount.java:360)

      at employee.LogAccount.access$100(LogAccount.java:17)

      at employee.LogAccount$2.actionPerformed(LogAccount.java:100)

      at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)

      at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)

      at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)

      at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)

      at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)

      at java.awt.Component.processMouseEvent(Component.java:6504)

      at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)

      at java.awt.Component.processEvent(Component.java:6269)

      at java.awt.Container.processEvent(Container.java:2229)

      at java.awt.Component.dispatchEventImpl(Component.java:4860)

      at java.awt.Container.dispatchEventImpl(Container.java:2287)

      at java.awt.Component.dispatchEvent(Component.java:4686)

      at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)

      at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)

      at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)

      at java.awt.Container.dispatchEventImpl(Container.java:2273)

      at java.awt.Window.dispatchEventImpl(Window.java:2713)

      at java.awt.Component.dispatchEvent(Component.java:4686)

      at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)

      at java.awt.EventQueue.access$000(EventQueue.java:101)

      at java.awt.EventQueue$3.run(EventQueue.java:666)

      at java.awt.EventQueue$3.run(EventQueue.java:664)

      at java.security.AccessController.doPrivileged(Native Method)

      at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)

      at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)

      at java.awt.EventQueue$4.run(EventQueue.java:680)

      at java.awt.EventQueue$4.run(EventQueue.java:678)

      at java.security.AccessController.doPrivileged(Native Method)

      at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)

      at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)

      at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)

      at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)

      at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)

      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)

      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)

      at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

---------------------------------------------------------

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

---------------------------------------------------------

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:535)

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:476)

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:435)

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:676)

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:621)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:206)

      at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:488)

      ... 44 more

BUILD STOPPED (total time: 3 minutes 2 seconds)run:

[EL Info]: 2013-06-10 03:58:00.961--ServerSession(116252)--EclipseLink, version: Eclipse Persistence Services - 2.3.2.v20111125-r10461

[EL Severe]: 2013-06-10 03:58:02.638--ServerSession(116252)--Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

---------------------------------------------------------

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Exception in thread "AWT-EventQueue-0" javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Runtime Exceptions:

---------------------------------------------------------

Descriptor Exceptions:

[EL Severe]: 2013-06-10 03:58:02.653--ServerSession(116252)--Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

---------------------------------------------------------

---------------------------------------------------------

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

---------------------------------------------------------

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

---------------------------------------------------------

      at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:517)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:294)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:272)

      at database.Entity.init(Entity.java:22)

      at employee.LogAccount.jButton1ActionPerformed(LogAccount.java:360)

      at employee.LogAccount.access$100(LogAccount.java:17)

      at employee.LogAccount$2.actionPerformed(LogAccount.java:100)

      at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)

      at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)

      at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)

      at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)

      at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)

      at java.awt.Component.processMouseEvent(Component.java:6504)

      at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)

      at java.awt.Component.processEvent(Component.java:6269)

      at java.awt.Container.processEvent(Container.java:2229)

      at java.awt.Component.dispatchEventImpl(Component.java:4860)

      at java.awt.Container.dispatchEventImpl(Container.java:2287)

      at java.awt.Component.dispatchEvent(Component.java:4686)

      at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)

      at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)

      at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)

      at java.awt.Container.dispatchEventImpl(Container.java:2273)

      at java.awt.Window.dispatchEventImpl(Window.java:2713)

      at java.awt.Component.dispatchEvent(Component.java:4686)

      at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)

      at java.awt.EventQueue.access$000(EventQueue.java:101)

      at java.awt.EventQueue$3.run(EventQueue.java:666)

      at java.awt.EventQueue$3.run(EventQueue.java:664)

      at java.security.AccessController.doPrivileged(Native Method)

      at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)

      at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)

      at java.awt.EventQueue$4.run(EventQueue.java:680)

      at java.awt.EventQueue$4.run(EventQueue.java:678)

      at java.security.AccessController.doPrivileged(Native Method)

      at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)

      at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)

      at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)

      at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)

      at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)

      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)

      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)

      at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

---------------------------------------------------------

Exception [EclipseLink-48] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [urinetest.hpf].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[hpf1-->urinetest.hpf]

Descriptor: RelationalDescriptor(database.Urinetest --> [DatabaseTable(urinetest)])

Runtime Exceptions:

---------------------------------------------------------

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:535)

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:476)

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:435)

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:676)

      at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:621)

      at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:206)

      at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:488)

      ... 44 more

BUILD STOPPED (total time: 3 minutes 2 seconds)

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How do I add PayPal buttons / logos to my website?

To add PayPal buttons or logos to your website, log in to your PayPal account at www.paypal.com/uk and then click on Merchant Services at the top of the page.

If you would like to add a PayPal logo to your website:

1. Go to www.paypal.com/uk/logos
2. Choose the type of logo you need.
3. Accept the terms of the Logo Centre User Agreement.
4. Copy the HTML code for your preferred logo and paste it into the HTML code for your website.

You can easily create or modify your PayPal buttons / logo settings.

To create customised payment buttons for your website:

1. Log in to your PayPal account.
2. Click Profile near the top of the page.
3. Select My Selling Preferences.
4. Under ‘Selling Online’, in the ‘PayPal Buttons’ section, click Update.
5. In the ‘Related Items’ box on the right, click Create New Button.
6. Select the category for the payments you will be accepting in the Accept payments for drop-down menu and fill in all required fields.
7. Select Step 2 and Step 3 for additional features.
8. Click Create Button.
9. Click Select Code to select the button code.
10. Copy the HTML code for your button and paste it into the HTML code for your website.

To edit a button:

1. Log in to your PayPal account.
2. Click Profile near the top of the page.
3. Select My Selling Preferences.
4. Under ‘Selling Online’, in the ‘PayPal Buttons’ section, click Update.
5. From the ‘Action’ menu next to the button you want to edit, select Edit button.
6. Enter your edits, and then click Re-create Button.
7. Click Select Code to select the button code.
8. Copy the HTML code for your button and paste it into the HTML code for your website.

For website development,Paypal intergration inbox me ericmutua44@gmail.com

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How to add a JDatePicker in neatbeans.

This section shows how to integrate the JDatePicker suite components within NetBeans 5.0.

Create a library

1. Select Tools|Library Manager to open the Library Manager dialog.
2. Click the New Library... button under the left pane to open the New Library dialog:
   1. Enter a name (JDatePicker) for the new library in the Library Name field.
   2. Click OK to close the dialog.
3. Click the Add JAR/Folder... button to open the Browse JAR/Folder dialog:
   1. Select the jdatepicker.jar and jdatepicker-beans.jar files from the directory where you keep them.
   2. Click Add JAR/Folder to close the dialog.
4. Click OK to close the Library Manager dialog.

Register components in the palette

1. Select Tools|Palette Manager|Swing/AWT Components to open the Palette Manager dialog.
2. Click the New Category... button to open the New Palette Category dialog:
   1. Enter a name (JDatePicker) for the new palette category. This new category will contain the JDatePicker suite components.
   2. Click OK to close the dialog.
3. Click the Add from Library... button to open the Install Components to Palette wizard dialog:
   1. Click the name of the library that contains the components (JDatePicker) from the list. Click Next.
   2. Select all the available components. Click Next.
   3. Click the name of the palette category (JDatePicker) where the components should be installed.
   4. Click Finish to close the dialog.
4. Click Close to close the Palette Manager dialog.
   You should now see your category in the component palette. When you expand it, icons for the beans you've added will appear. When you are in Design mode you will be able to drop the components on the container you're using.
   
   
   
   
   Form more  information or sofware development  inbox me ericmutua44@gmail.com

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