Free java jcr software for linux

Java::JCR is a module to use JSR 170 (JCR) repositories from Perl.

SYNOPSIS

use Java::JCR;
use Java::JCR::Jackrabbit;

my $repository = Java::JCR::Jackrabbit->new;
my $session = $repository->login(
Java::JCR::SimpleCredentials->new(username, password)
);

my $root = $session->get_root_node;
my $node = $root->add_node(foo, nt:unstructured);
$node->set_property(bar, 10);
$node->set_property(baz, blah);
$node->set_property(qux, 4.8);
$session->save;

The JSR 170 specification describes a Java-based API for access hierarchical databases. This is generally referred to by the abbreviation JCR, which is an abbreviation for Content Repository API for Java Technology Specification.

The biggest OSS implementation, as of this writing, is Jackrabbit, which is a project at the Apache Software Foundation, http://jackrabbit.apache.org/. Currently, this library allows Perl programmers to develop using the JCR and Jackrabbit, though, theres no reason why connectors cant be written for other implementations, such as Jaceira, CRX, eXoplatform, etc. The JCR library wrappers included are not at all specific to Jackrabbit.

Java Tetris project is a simple Tetris game.
Java Tetris is a game written with Eclipse and the VE Plugin. It is a nice starting point if you want to learn Java and Eclipse.
The game can be started as Java applet or Java application.
Enhancements:
- The dependency on jdom was removed.
- The jar is now only 30kb.
- A bug was fixed in the score list.

Java for C++ is a tool to generate C++-wrapper-classes for existing Java-classes. This tool reads a list of Java class names and creates source code for C++-classes to wrap them.
The implementation of the wrapper classes uses JNI (Java Native Interface) to call the "real" Java classes.
The C++-API to use these wrapper classes is very close to the API of the original Java classes. So developers of C++-software can use Java-classes as if they have been implemented in C++.
Enhancements:
- A problem where null values for method arguments, method return values, or field values caused some generated code to crash was fixed.
- Updating is strongly encouraged.

Java::JCR::Workspace is a Perl wrapper for javax.jcr.Workspace.
This is an automatically generated package wrapping javax.jcr.Workspace with a nice Perlish API.
For full documentation of what this class does, see the Java API documentation: http://www.day.com/maven/jsr170/javadocs/jcr-1.0/javax/jcr/Workspace.html
The deviations from the API documentation include the following:
- You will need to use Perl, intead of Java, to make any use of this API. (Duh.)
The package to use is Java::JCR::Workspace, rather than javax.jcr.Workspace.
- All method names have been changed from Java-style camelCase() to Perl-style lower_case().
Thus, if the function were named getName() in the Java API, it will be named get_name() in this API. As another example, nextEventListener() in the Java API will be next_event_listener() in this API.
- Handle exceptions just like typical Perl. Java::JCR::Exception takes care of making sure that works as expected.

Java::SJ is a highly configurable Java program startup system.

SYNOPSIS

sj myprogram.sj

This module allows you to very easily run Java services that rely on complex configuration at the VM and library level. It also provides an easy way of specifying a sensible default configuration that can be overridden by specific applications should they need to.

The system is configured on a machine and application level. The system looks for configuration files in a set of well-known locations, currently these are:

/etc/sj.conf
.sj.conf in users HOME directory
.sj.conf in current working directory

Every application is defined in terms of a similar configuration file. The configuration system has been designed so that it is easy to write a simple and minimal configuration file for a program.
Provided the system has a fairly complete configuration associated with it then an application configuration file need only have the class name to be executed.

Java Games project is a collection of simple games that are compiled into Java applets and meant to be played online in a Web browser.

Currently the collection contains four games: XO World (similar to tic-tac-toe, but with lines of 5 on a 10x10 board); 100 Mack (guess the random combination of 4 images out of a set of six); Memory (flip 2 plates at a time to find matching pairs); and Tetris.

Java Tools is a lightweight integrated development environment for creating, compiling, and executing Java applications and applets.
Java Tools includes point and click access to the Java files, commands, and documents. It also includes a built-in text editor and user interface for the Java debugger.
It is intended for the new Java user who needs help getting started. Its also for the more experienced Java user who wants easy access to the Java commands and a text editor.
Main features:
- GUI with built-in help and small footprint.
- Point and click access to all files (Java, manifest, HTML, image and sound) and directories (package).
- Point and click access to all commands for compiling (javac), archiving (jar), documenting (javadoc), executing (java), debugging (jdb) and disassembling (javap).
- Point and click access to all documents (Java API Specification, Java Tools and Utilities, Java Features and Java Tutorial).
- Point and click creation of all files (Java, manifest and HTML) and directories (package).
- Point and click installation of distribution archive files (Java document, Java source code, Java Tutorial and Sun Tools).
- Automatic determination of class file dependencies for archiving (jar) and documenting (javadoc) Java files.
- Checking for unused, redundant and missing imports.
- Logging of all commands invoked by GUI.
- Code metrics for Java files.
- Built-in text editor (see Edit for details).
- Built-in user interface for the Java debugger with command-line editing and history.
- Self-installing executable (Java archive file).
- Comprehensive installation and user documentation for Java and Java Tools.

Jabber is an instant messagings system (and a few other things but Ill forget about these for the moment), but it uses XML so its easy to create clients for it, and to link it in with other systems.

As well as that anyone can run a Jabber server, so youre school, university or office could have their own messaging system.