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PONo Persistence provider for "EntityManager" named "firstOne" Java
 

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    <p>I'm using persistense api to connect to database </p> <p>this is pom.xml dependendcies</p> <pre><code> &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-core&lt;/artifactId&gt; &lt;version&gt;4.2.8.Final&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;postgresql&lt;/groupId&gt; &lt;artifactId&gt;postgresql&lt;/artifactId&gt; &lt;version&gt;9.1-901.jdbc4&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;javax.persistence&lt;/groupId&gt; &lt;artifactId&gt;persistence-api&lt;/artifactId&gt; &lt;version&gt;1.0.2&lt;/version&gt; </code></pre> <p>persistense.xml:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"&gt; &lt;persistence-unit name="firstOne"&gt; &lt;provider&gt;org.hibernate.ejb.HibernatePersistence&lt;/provider&gt; &lt;properties&gt; &lt;property name="hibernate.ejb.cfgfile" value="/META-INF/hibernate.cfg.xml" /&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; &lt;/persistence&gt; </code></pre> <p>hibernate.cfg.xml:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"&gt; &lt;hibernate-configuration&gt; &lt;session-factory&gt; &lt;property name="connection.driver_class"&gt;org.postgresql.Driver&lt;/property&gt; &lt;property name="dialect"&gt;org.hibernate.dialect.PostgreSQLDialect&lt;/property&gt; &lt;property name="hibernate.connection.username"&gt;postgres&lt;/property&gt; &lt;property name="hibernate.connection.password"&gt;tauren993&lt;/property&gt; &lt;property name="hibernate.connection.url"&gt;jdbc:postgresql://localhost:5432/hibernate&lt;/property&gt; &lt;property name="hibernate.hbm2ddl.auto"&gt;create&lt;/property&gt; &lt;property name="hibernate.generate_statistics"&gt;false&lt;/property&gt; &lt;property name="show_sql"&gt;true&lt;/property&gt; &lt;property name="format_sql"&gt;true&lt;/property&gt; &lt;property name="hibernate.cache.use_structured_entries"&gt;false&lt;/property&gt; &lt;property name="hibernate.cache.use_second_level_cache"&gt;false&lt;/property&gt; &lt;mapping class="Employee" /&gt; &lt;/session-factory&gt; &lt;/hibernate-configuration&gt; </code></pre> <p>hibernate.cfg.xml and persistense.xml are stored project/META-INF folder and I'm getting error on</p> <pre><code>EntityManagerFactory emf = Persistence.createEntityManagerFactory("firstOne"); </code></pre> <p>Stack Trace:</p> <pre><code>javax.persistence.PersistenceException: No Persistence provider for EntityManager named firstOne at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:69) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) at Main.main(Main.java:14) </code></pre>
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    2. COjavax.persistence.PersistenceException: No Persistence provider for EntityManager named firstOne at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:69) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) at Main.main(Main.java:14)
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