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explorer NullPointerException

I studied ObjectDB a few hours ago and got some problems when use explorer . I run it and right-click in 'Open local database' window,and the all the pop menu item is gray and disabled,such as ‘new database’,'new directory','cut','copy' ... if I click 'tools---oprions' before open database, the errot I got is: [2012-05-21 09:51:11 #1 explorer] java.lang.NullPointerException at com.objectdb.o.CNC.p(CNC.java:253) at com.objectdb.o.EHL.d(EHL.java:55) at com.objectdb.o.VPN.(VPN.java:60) at com.objectdb.o.OPD.(OPD.java:69) at com.objectdb.o.OPD.(OPD.java:42) #1 2012-05-21 01:22 I studied ObjectDB a few hours ago and got some problems when use explorer. I run it and right-click in & ...

 
tutorial

Step 1: Create a Java Project

Explains how to create an Eclipse project with ObjectDB/JPA support. We start by creating a new Eclipse Project, using: File > New > Project... If you are using Eclipse IDE for Java EE Developers, you can see in the [New] menu a command for creating a [JPA Project]. We are not using that type of pro ...

 
tutorial

Step 6: Run the Web Application

Shows how to run the NetBeans/JPA web application tutorial. You can run the application now by right clicking the GuestServlet node (in the [Projects] window), selecting Run File , and then clicking  OK (no need to change the servlet execution URI). Since we are using ObjectDB in embedded mode - ...

 
tutorial

JPA Web App Tutorial - Maven Project

The JPA Web Application tutorial for Tomcat / Jetty as a Maven project (download & run). The  JPA Web Application tutorial provides step by step instructions on how to build a simple Java/JPA database driven web application (for Tomcat / Jetty) in  Eclipse or  NetBeans . Building a new application step by s ...

 
tutorial

Step 6: Run the Java EE 6 Application

Shows how to run the NetBeans/JPA Java EE (J2EE) web application tutorial. You can run the application now by right clicking the  GuestServlet node (in the [Projects] window), selecting  Run File , and then clicking  OK (no need to change the servlet execution URI). Since we are using ObjectDB in embedded mode - ...

 
tutorial

Getting Started with JPA - Maven Project

The Getting Started with JPA tutorial as a Maven project (download & run). The Getting Started with JPA tutorial provides step by step instructions on how to build a simple JPA database driven application in Eclipse or NetBeans . Building a new application step by step is an effective way to learn - but if you p ...

 
tutorial

Step 2: Entity Class and Persistence Unit

Explains how to define a JPA entity class and a persistence unit (persistence.xml) in an Eclipse Spring MVC web application project. To store objects in an ObjectDB database using JPA we need to define an entity class: Right click the project node (in the [Package Explorer] window), select  New > Source Folder , enter src/main/java as Folder ...

 
tutorial

Java EE 6 JPA Tutorial - IntelliJ Project

Opening a Java EE 6 JPA Maven web application project in the IntelliJ IDEA. To open and run the  Java EE 6 Web Application tutorial project in IntelliJ IDEA: Download and extract the project zip file: Java EE 6 JPA Web App - Maven Project (6KB) . Open the project in IntelliJ IDEA: Select  File > Open Proj ...

 
forum_thread

Issue deploying EJB project to Jboss/Glassfish

I have been trying to deploy an EJB project created in Eclipse/Juno to both JBOSS and Glassfish.  The error I get with Glassfish is #1 2012-12-07 22:12 I have been trying to deploy an EJB project created in Eclipse/Juno to both JBOSS and Glassfish.  The error ...

 
forum_thread

data protection method in ObjectDB Embedded Mode

I am new in ObjectDB and i need to understand How is data protection in ObjectDB Embedded Mode without using  username or password thanks ... operating systems support encryption of complete drives, directories or files, and an ObjectDB database is an ordinary file. If ...