Free java class sample software for linux

RJCE allows all methods or variables of user defined classes to be altered at runtime. These alterations are then applied to a single instance, a collection of instances (i.e. list, set or map), or an entire class.

This helps you to test your application in an interactive way; altering running programs helping a trial and error approach to programming; testing code and saving it when it’s correct. Long running algorithms, such as simulations, can also easily be refined without the need for restarts or lose of data.

RJCE can be used to write a program from within itself ensuring high coupling between testing and development, with no delay before the outcome of any alterations.

RJCE allows scripts to run from within your application, allowing users to configure or extend an application dynamically, bypassing normal language access rules controlled by public, private and protected. This can be done by easily instatiating an instance of CodeEditorFrame from the rom.gui package.

RJCE permits faster development of applications by allowing easy migration from scripts to Java programs.

Asm2class is a java assembly to class file compiler.

Asm2class is release under the terms of the GPL License. The current version of asm2class (0.1.2) is a beta version and allow generating class file from java assembly file that contains class definition, field definition, method definition and constructor definition.

This release support also abstract class, abstract method and native method definition.

Asm2class know more thatn 90% of the java assembly language. Asm2class can do dead code detection, uninitialized register detection.

Java::Import::Examples is an example of how to use Java::Import to call into Java classes.

Making RMI calls from Perl

One nice thing about Java is the extremely straight forward manner in which it allows you to make calls to remote objects residing on distant servers. Many people use this ability as a point of integration between their system and a posible third party or legacy system. Unfortunatly, for the most part the ability to make calls to these remote objects is something that only other Java applications can do without making a big fuss about it. However, we can now do this from Perl.

Assume that I have a RMI server from which I can get data from in the form of simple Java Beans. One method of doing this is to use the GCJ::Cni library and natively compile and wrap a set of Java Classes which can then be used from my Perl script. However, there is an easier way.

Lets begin by descriping the Java interfaces that well be working with. We first have the Remote Interface that we will be interacting with:

import java.rmi.*;
public interface RemoteInterface extends Remote {
public SomeBean getMessage(String seedMessage) throws RemoteException;
}
And we also have the bean we will be asking for:
import java.io.*;
public class SomeBean implements Serializable {
private String value;
public SomeBean() {}
public void setValue ( String _value ) { ... }
public String getValue ( ) { ... }
}
As far as any Perl client program is concerned this is all we need to know about.
Now all there is left to do is write a client:
use Java::Import qw(
java.rmi.Naming
);

my $remote_interface = java::rmi::Naming->lookup(jstring("//localhost/Home"));
my $bean = $remote_interface->getMessage(jstring("Hi there"));
print $bean->getValue(), "n";

Thats all there is. Notice that all we had to tell Java::Import about was java.rmi.Naming, this is because it was the only class we used by name in our Perl code, every other Java class (the objects held by $bean and $remote_interface) was returned by some other method call originating from java.rmi.Naming.

In order to run this example we have to make sure everything is in its place. We start by compiling the client code. Assuming that we have been given a Stub class file (RemoteObject_Stub.class) we can do the following:

gcj -C SomeBean.java RemoteInterface.java
fastjar -cvf client.jar SomeBean.class RemoteInterface.class RemoteObject_Stub.class

Making sure our server is reachable we can then run the client code:

CLASSPATH=client.jar perl client.pl

Thats it, you should then see the message returned by your server.

Java::JCR::Lock is a Perl module that can load JCR lock extension wrappers.

SYNOPSIS

use Java::JCR::Lock

This loads the Perl classes mapped to the Java package named javax.jcr.lock.

Installation:

Installation can be a bit tricky because this library depends upon Inline::Java,
which didnt install without going through the process by hand. (I usually just
let CPAN do all the work.) You must first install Inline::Java.

Then, you must install libwww-perl, as I use that to download the Jar files. I
hope to remove this dependency in the future, but its there for now.

After installing both of those, you should be able to run:

perl Build.PL
./Build
./Build test
./Build install

I generally try to make my build scripts as standard as possible. If you prefer
using make, I have Module::Build distributing a makefile generator too:

perl Makefile.PL
make
make test
make install

Claros Downloader is a simple, highly customizable, multi-threaded, web based downloader manager. You can download files to your desktop, corporate server, wherever you are. You simply point your browser to Claros Downloader, login, add new urls. It forks a new thread downloading the remote file to the server running the web application. Thats it.

Installation:

For Tomcat Users:

Copy the war file to $TOMCAT_INSTALL_DIR/webapps folder

Start Tomcat

For other application servers, you shall know what to do with a war file. If war extension means nothing to you, just unzip is it, if it was a regular zip archive.

All configuration is done in WEB-INF/resources directory. Open config.properties with your favorite editor, and follow the instructions.

Please Note: There is a Java class called AddUser.class in WEB-INF/classes/org/claros/downloader/admin directory. Run this class from console to add a new user to the system.

HTML::Simple is a simple, dependency free module for generating HTML (and XML).

SYNOPSIS

Note: It turns out that TOMC owns the HTML::Simple namespace so Ive moved development of this module to HTML::Tiny. Please use HTML::Tiny in preference to this module.

use HTML::Simple;

my $h = HTML::Simple->new;

# Generate a simple page
print $h->html(
[
$h->head( $h->title( Sample page ) ),
$h->body(
[
$h->h1( { class => main }, Sample page ),
$h->p( Hello, World, { class => detail }, Second para )
]
)
]
);

# Outputs
< html>
< head>
< title>Sample page< /title>
< /head>
< body>
< h1 class="main">Sample page< /h1>
< p>Hello, World< /p>
< p class="detail">Second para< /p>
< /body>
< /html>

Java::Import is Perl module to use Java classes in Perl.

SYNOPSIS

use Java::Import qw(
some.package.SomeClass
);

my $instance = new some.package.SomeClass();
$instance->someMethod();

my $ret_val = some::package::SomeClass::someStaticMethod();
$ret_val->someMethod();

$ret_val2 = $instance->someOtherMethod($ret_val);
$ret_val2->someMethod();

my $java_array_ref $instance->someMethod2();
foreach my $obj ( @$java_array_ref ) {
$obj->someMethod();
}

The purpose of this module is to provide a simple method for using Java classes from a Perl program while using the latest in Open Source Java Technology. Thus, this module makes great use of the GNU Compiler Tools for Java in its implimentation.

Java::JCR::Lock::Lock is a Perl wrapper for javax.jcr.lock.Lock.
This is an automatically generated package wrapping javax.jcr.lock.Lock 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/lock/Lock.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::Lock::Lock, rather than javax.jcr.lock.Lock.
- 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.