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190

Unexpected output "*** PatternParameterImpl" in the java console

We have an unexpected output "*** PatternParameterImpl" in our java console. Do you know why? Caused by: PrintStream.write(String) line: 603 PrintStream.print(String) line: 745 PrintStream.println(String) line: 882 ThreadPrintStream.println(String) line: 179 TYS.k() line: 199
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ObjectDB Object Database Features

downloadable tutorials for Eclipse, NetBeans, IntelliJ and Maven. Getting Started Tutorial (console). Web
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Posting Sample Code

/ embeddable classes. Avoid dependency on external libraries. Use a console application with a main method
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Database Server

-silent : avoid printing messages to the standard output -console : avoid showing
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Getting Started with JPA - Maven Project

should be points-console (containing the pom.xml file). No need to download and install ObjectDB - Maven
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Step 1: Create a Java Project

Explains how to create a NetBeans project with ObjectDB/JPA support.
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Step 1: Create a Java Project

Explains how to create an Eclipse project with ObjectDB/JPA support.
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JPA Tutorials

The following tutorials demonstrate how to develop database driven applications using JPA and the ObjectDB ODBMS (Object Oriented Database Management System). Console JPA Tutorial The Quick Start tutorial demonstrates how to use ObjectDB and JPA in a console application: Quick Start with JPA
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Step 4: Run the Application

You can now run the application by right clicking the Main.java file (in the [Package Explorer] window) and selecting Run As > Java Application. The expected output in the Eclipse [Console] window, is: Total Points: 1000 Average X: 499.5 (0,0) (1,1) (2,2) (3,3) : : (998,998) (999,999
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Getting Started with JPA - IntelliJ Project

To open and run the Quick Start with JPA tutorial project in IntelliJ IDEA: Download and extract the project zip file: Getting Started with JPA - Maven Project (3KB) Open the project in IntelliJ IDEA: Select File > Open Project.... Select the points-console directory and click Open Project. Run

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support
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Which JPA is Faster?

 

See a comparison of Hibernate, EclipseLink, OpenJPA, DataNucleus, MySQL, PostgreSQL, Derby, HSQLDB, DB4O by Versant, H2 Database, SQLite and ObjectDB

in the JPA Benchmark.

Copyright © 2003, 2010, 2023  ObjectDB Software, all rights reserved. The JPA API Reference Documentation (JavaDoc) on this website is derived with some adjustments from the open source JPA 2 RI (EclipseLink) and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0. The JDO API Reference Documentation (JavaDoc) on this website is derived with some adjustments from the JDO 2.2 API and is available under the terms of the Apache License, v. 2.0. Images on this website are available under these licecnes. Documentation on this website explains how to use JPA in the context of the ObjectDB Object Database but mostly relevant also for ORM JPA implementations, such as Hibernate (and HQL), EclipseLink, TopLink, OpenJPA and DataNucleus. ObjectDB is not an ORM JPA implementation but an Object Database (ODBMS) for Java with built in JPA 2 support.