Arquivo Discussoes de Programacao e Tecnologia 
Ola Galera!!!
Sou + ou - iniciante no Java, estou vindo do Delphi, gostaria de saber se alguem pode me ajudar em relação a eventos
estou fazendo um desenvolvimento e gostaria de saber qual é o evento de saida de componentes pois tenho tentado e sem sucesso,
estou precisando mto disso para que eu possa continuar o meu desenvolvimento. E outros eventos tbm se possivel
Agradeço antecipadamente a atenção.
O que você quer dizer com evento de saída?
Quando um componente perde o foco?
Abraço!
Ola estou fazendo o meu trabalho de conclusão de curso usando java com JPA.
Em outro topico do forum encontrei um video do Paulo Canedo Ensinado a Usar as conexões do banco e a ferramenta grafica do netbeans, segui o passo a passo todo porem estou tendo dificuldade de resolver estes eventos…
Exception in thread “AWT-EventQueue-0” javax.persistence.PersistenceException: No Persistence provider for EntityManager named ListaTarefaPU: Provider named oracle.toplink.essentials.PersistenceProvider threw unexpected exception at create EntityManagerFactory:
oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException
Local Exception Stack:
Exception [TOPLINK-30005] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException
Exception Description: An exception was thrown while searching for persistence archives with ClassLoader: sun.misc.Launcher$AppClassLoader@11b86e7
Internal Exception: java.lang.IllegalArgumentException: URI has an authority component
at oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources(PersistenceUnitLoadingException.java:143)
at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:169)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:110)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at lib.gui.TarefaTabela.(TarefaTabela.java:27)
at gui.Main.initComponents(Main.java:136)
at gui.Main.(Main.java:29)
at gui.Main$4.run(Main.java:221)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.lang.IllegalArgumentException: URI has an authority component
at java.io.File.(File.java:368)
at oracle.toplink.essentials.ejb.cmp3.persistence.ArchiveFactoryImpl.createArchive(ArchiveFactoryImpl.java:99)
at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.findPersistenceArchives(PersistenceUnitProcessor.java:248)
at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.findPersistenceArchives(PersistenceUnitProcessor.java:231)
at oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initialize(JavaSECMPInitializer.java:252)
at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:155)
… 14 more
Provider named oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider threw unexpected exception at create EntityManagerFactory:
oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException
Local Exception Stack:
Exception [TOPLINK-30005] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException
Exception Description: An exception was thrown while searching for persistence archives with ClassLoader: sun.misc.Launcher$AppClassLoader@11b86e7
Internal Exception: java.lang.IllegalArgumentException: URI has an authority component
at oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources(PersistenceUnitLoadingException.java:143)
at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:169)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:110)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at lib.gui.TarefaTabela.(TarefaTabela.java:27)
at gui.Main.initComponents(Main.java:136)
at gui.Main.(Main.java:29)
at gui.Main$4.run(Main.java:221)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.lang.IllegalArgumentException: URI has an authority component
at java.io.File.(File.java:368)
at oracle.toplink.essentials.ejb.cmp3.persistence.ArchiveFactoryImpl.createArchive(ArchiveFactoryImpl.java:99)
at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.findPersistenceArchives(PersistenceUnitProcessor.java:248)
at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.findPersistenceArchives(PersistenceUnitProcessor.java:231)
at oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initialize(JavaSECMPInitializer.java:252)
at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:155)
… 14 more
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:154)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at lib.gui.TarefaTabela.<init>(TarefaTabela.java:27)
at gui.Main.initComponents(Main.java:136)
at gui.Main.<init>(Main.java:29)
at gui.Main$4.run(Main.java:221)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Algume poderia me Ajudar!
O que você quer dizer com evento de saída?Quando um componente perde o foco?
Abraço!
mais ou menos isso, por exemplo digito um codigo em um jTextField1 e dou um tab e vou para o JtextField2 seguinte;
isso significa na saida de um componente para outro
Use o FocusListener:
campoTexto.addFocusListener(new FocusListener(){
public void focusLost(FocusEvent evt){
//perda do foco
}
public void focusGained(FocusEvent evt){
//recebeu foco
}
});
Não testei, mas é isso aí…
Espero ter ajudado.
Abraço!
Cara Vlw!
Era isso mesmo que eu precisava
mto obg por enquante e pela sua atenção