About HttpServlet

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5	Guessbook tutorial: Java EE 6 JPA Tutorial - Maven Project .java:36) at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) at javax.servlet.http.HttpServlet.service(HttpServlet.java:770) at org.apache.catalina.core.StandardWrapper.service ... ) at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) at javax.servlet.http.HttpServlet
5	JBOSS AS7 7.1.1 - Entity not persisted and createNamedQuery fire exception (GuestServlet.java:24) [classes:] at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at org.apache.catalina
5	NoSuchFieldError: __odbTracker on NetBeans 7.3 + JBoss 7.1.1 ) javax.servlet.http.HttpServlet.service(HttpServlet.java:734) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.jboss.weld.servlet.ConversationPropagationFilter.doFilter ... .http.HttpServlet.service(HttpServlet.java:734) 12:25:10,458 ERROR [stderr] (http--127.0.0.1-8080-1
5	Problem to use find method on an abstract Class: AbstractMethodError is thrown .java:46) [classes:] at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java ... (PaltzefomatServlet.java:46) [classes:] at javax.servlet.http.HttpServlet.service(HttpServlet.java:754
4	Felix, rollback exception, error 613 ) at FelixProject.ExampleServlet.doGet(ExampleServlet.java:21) at javax.servlet.http.HttpServlet.service(HttpServlet.java:618) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) at org ... .servlet.http.HttpServlet.service(HttpServlet.java:725) at org.eclipse.jetty.servlet.ServletHolder
3	error 990 ? (FrameworkServlet.java:563) at javax.servlet.http.HttpServlet.service(HttpServlet.java:647) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain
3	Error in production. Failed to commit transaction: Unexpected database state: BTree -152 is not found .java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain
3	Error reading UTF string (RAServlet.java:94) [reverse.ajax.jar:] at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at org.apache
3	InvalidClassException .server.servlet.JsonServlet.doGet(JsonServlet.java:427) at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache
3	Potential ObjectDB bug .6.6] at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1 ... .servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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