RE: Друзья! Помогите пожалуйста. (0 viewing)
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TOPIC: RE: Друзья! Помогите пожалуйста.
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Ramil (User)
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Друзья! Помогите пожалуйста. 7 Months, 4 Weeks ago
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Здравствуйте!
Я начал самостоятельно изучать Java и NetBeans 6. Создал по шаблону Desktop Data_base_ Application, но при запуске возникает такая ошибка:
init:
deps-jar:
Created dir: C:Documents and SettingsRamilМои документыNetBeansProjectsCarsAppbuildclasses
Compiling 4 source files to C:Documents and SettingsRamilМои документыNetBeansProjectsCarsAppbuildclasses
Note: C:Documents and SettingsRamilМои документыNetBeansProjectsCarsAppsrccarsappCarsView.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Copying 23 files to C:Documents and SettingsRamilМои документыNetBeansProjectsCarsAppbuildclasses
compile:
run:
25.03.2008 14:06:36 org.jdesktop.application.Application$1 run
SEVERE: Application class carsapp.CarsApp failed to launch
javax.persistence.PersistenceException: No Persistence provider for EntityManager named car_data_base_PU: The following providers:
oracle.top_link_.essentials.PersistenceProvider
oracle.top_link_.essentials.ejb.cmp3.EntityManagerFactoryProvider
Returned null to createEntityManagerFactory.
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:154)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
Объясните, пожалуйста, что делать. Заранее благодарю.
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Mumrik (User)
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Posts: 3
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RE: Друзья! Помогите пожалуйста. 7 Months, 4 Weeks ago
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Может, не стоит с самого начала изучать Java вместе с IDE? А то научитесь успешно кликать в NetBeans на кнопочки и создавать по шаблонам какие-то приложения, а в простом редакторе ничего сделать не сможете и что такое classpath знать не будете. http://skipy.ru/philosophy.html - вот тут много хороших статей, а в данной теме самой полезной, наверное, будет эта: http://skipy.ru/philosophy/visualDesigners.html |
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