java class file format
Runtime Java Class Editor 1.0
Runtime Java Class Editor is a tool for editing loaded (running) Java classes and much more. more>>
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 its 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.

Java Clazz Utils 1.2.2
Java Clazz Utils offers you a full-featured and crossplatform Java bytecode viewer and decompiler which can support latest Java versions (from 1.4 till 1.6). more>>
Java Clazz Utils 1.2.2 offers you a full-featured and crossplatform Java bytecode viewer and decompiler which can support latest Java versions (from 1.4 till 1.6). It can be used both as command line tool and user application with Swing interface. It contains InfoJ, Decompiler and jclazz-GUI.
Major Features:
- InfoJ can be used to generate information about Java class. The output includes all possible data that can be extracted from class file: fields, methods, attributes, access flags, signatures, debug information, opcodes etc.
- Decompiler can be used to reproduce Java source code from compiled Java class file. It uses debug information to produce Java code which is nearly the same as original source file. Nevertheless, there are several restrictions and Java code constructions that prevent decompiler from producing the same code as original and even correct Java code. You can find out more about these cases below on this page.
- jclazz-GUI is user-friendly interface for quick start and easy to use.
Enhancements:
- Save of decompiled file writes to predefined file name - Fixed
- Condition structures "condition ? operation1 : operation2" were decompiled incorrectly - Fixed
- URL to bug reporting page is corrected
jclassinfo 0.19.1
jclassinfo is an information extractor for Java bytecode. more>>
Main features:
Class Information
- Java VM version required,
- super class,
- interfaces implemented. --general-info
- Constant pool dump --constant-pool
- Methods --methods
- Fields --fields
- Class attributes --attributes
Dependency Information
- Packages required --packages
- Classes required --classes
- Methods required --methods-ref
Options affecting verbosity
- Disassemble code --disasm
- Print limits and exception table for methods --verbose
- Print debugging information --method-debug-info
- Change visibility --visibility=< public | package | protected | private | synthetic >
Java for C++ 0.4
Java for C++ is a tool to generate C++-wrapper-classes for existing Java-classes. more>>
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.
Class::Inner 0.1
Class::Inner is a perlish implementation of Java like inner classes. more>>
SYNOPSIS
use Class::Inner;
my $object = Class::Inner->new(
parent => ParentClass,
methods => { method => sub { ... } }, },
constructor => new,
args => [@constructor_args],
);
Yet another implementation of an anonymous class with per object overrideable methods, but with the added attraction of sort of working dispatch to the parent classs method.
METHODS
new HASH
Takes a hash like argument list with the following keys.
parent
The name of the parent class. Note that you can only get single inheritance with this or SUPER wont work.
methods
A hash, keys are method names, values are CODEREFs.
constructor
The name of the constructor method. Defaults to new.
args
An anonymous array of arguments to pass to the constructor. Defaults to an empty list.
Returns an object in an anonymous class which inherits from the parent class. This anonymous class has a couple of extra methods:
SUPER
If you were to pass something like
$obj = Class::Inner->new(
parent => Parent,
methods => { method => sub { ...; $self->SUPER::method(@_) } },
);
then $self-gtSUPER::method almost certainly wouldnt do what you expect, so we provide the SUPER method which dispatches to the parent implementation of the current method. There seems to be no good way of getting the full SUPER:: functionality, but Im working on it.
DESTROY
Because Class::Inner works by creating a whole new class name for your object, it could potentially leak memory if you create a lot of them. So we add a DESTROY method that removes the class from the symbol table once its finished with.
If you need to override a parents DESTROY method, adding a call to Class::Inner::clean_symbol_table(ref $self) to it. Do it at the end of the method or your other method calls wont work.
clean_symbol_table
The helper subroutine that DESTROY uses to remove the class from the symbol table.
new_classname
Returns a name for the next anonymous class.
Java::Import 0.03
Java::Import is Perl module to use Java classes in Perl. more>>
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.
asm2class 0.1.2
asm2class is an assembly Java to class file compiler. more>>
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.
Sun Java Platform Enterprise Edition 5 Update 2
Sun Java Platform Enterprise Edition is the industry standard for developing portable, robust Java applications. more>>
Building on the solid foundation of Java SE, Java EE provides Web services, component model, management, and communications APIs that make it the industry standard for implementing enterprise class service-oriented architecture (SOA) and Web 2.0 applications.
Java Platform Invoke API Demo (Linux) 2.01.04
Java Platform Invoke API (Demo version) for Linux, i386. Enables Java code to call native functions implemented in shared libraries like in Microsoft .NET Framework. Written for JSE 1.5.x and later. more>>
Java Platform Invoke API Demo (Linux) - Java Platform Invoke API (Demo version) for Linux/Unix, i386.
Enables Java code to call native functions implemented in shared link libraries like in Microsoft .NET Framework. Written for JSE 1.5.x and later.
Java platform invoke an API that enables Java code to call native functions implemented in shared libraries, such as those in the Linux API. It locates and invokes an exported function and marshals its arguments (integers, strings, arrays, structures, and so on) across the interoperation boundary as needed. This API supports implicit marshaling that makes Java coding with native functions very simple.
To consume a shared library functions you need
1.Identify functions in shared librarys.
Minimally, you must specify the name of the function and name of the the shared library that contains it.
2.Create a class to hold shared library functions.
You can use an existing class, create an individual class for each native function, or create one class that contains a set of related native functions. This class should extend CNativeLibrary. Use the annotation ImportLibrary to bind your class to the native library.
3.Create prototypes in Java code.
Write prototype of a native function as a method with signature that corresponds to the native function using data type map agreement. To identify the native function use the annotation Function. Mark the method with the native modifier.
4.Call a shared library function.
Call the method on your Java class as you would any other Java method. As parameters can be passed structures and implemented in Java callback functions.
Enhancements:
Version 2.01.04
System Requirements:JSE 1.5.x<<less
C# Java Virtual Machine 1.0.1
C# Java Virtual Machine is a tiny implementation of the Java VM, including simple native classes. more>>
Enhancements:
- The DbConnection class, which provides a connection to MS SQL or PostgreSQL using ADO.NET, was added.
- The Syst.MachineName method, which returns the machine name, was added.
- String.startsWith and String.endsWith functions were added.
- Some comments for VM.cs were written.
Java::JCR::Workspace 0.08
Java::JCR::Workspace is a Perl wrapper for javax.jcr.Workspace. more>>
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.
Jlint for Unix 1.23
Jlint will check your Java code and find bugs, inconsistencies and synchronization problems by doing data flow analysis and building lock graph more>> Jlint will check your Java code and find bugs, inconsistencies and synchronization problems by doing data flow analysis and building lock graph.
Jlint consists of two separate programs performing syntax and semantic verification. As far as Java mostly inherits C/C++ syntax and so inherits most of the problems caused by C syntax, the idea was to create common syntax verifier for all C-family languages: C, C++, Objective C and Java. This program was named AntiC, because it fixes problems with C grammar, which can cause dangerous programmers bugs, undetected by compiler. By using hand-written scanner and simple top-down parser, AntiC is able to detect such bugs as suspicious use of operators priorities, absence of break in switch code, wrong assumption about constructions bodies...
Semantic verifier Jlint extracts information from Java class files. As far as Java class file has very well specified and simple format, it greatly simplifies Jlint in comparison with source level verifiers, because development of Java grammar parser is not a simple task (even through Java grammar is simpler and less ambiguous than C++ grammar). Also dealing only with class files, protect Jlint from further Java extensions (format of virtual byte instructions is more conservative). By using debugging information Jlint can associate reported messages with Java sources.
Jlint performs local and global data flow analyses, calculating possible values of local variables and catching redundant and suspicious calculations. By performing global method invocation analysis, Jlint is able to detect invocation of method with possible "null" value of formal parameter and using of this parameter in method without check for "null". Jlint also builds lock dependency graph for classes dependencies and uses this graph to detect situations, which can cause deadlock during multithreaded program execution.<<less
Class::Declare::Attributes 0.04
Class::Declare::Attributes is a Perl module with Class::Declare method types using Perl attributes. more>>
SYNOPSIS
package My::Class;
use 5.006;
use strict;
use warnings;
use base qw( Class::Declare::Attributes );
# declare the class/instance attributes
__PACKAGE__->declare( ... );
#
# declare class/static/restricted/etc methods of this package
#
sub my_abstract : abstract { ... }
sub my_class : class { ... }
sub my_static : static { ... }
sub my_restricted : restricted { ... }
sub my_public : public { ... }
sub my_private : private { ... }
sub my_protected : protected { ... }
Class::Declare::Attributes extends Class::Declare by adding support for Perl attributes for specifying class method types. This extension was inspired by Damian Conways Attribute::Handlers module, and Tatsuhiko Miyagawas Attribute::Protected module. The original implementation used Attribute::Handlers, but now simply refers to attributes.
The addition of Perl attribute support (not to be confused with object attributes, which are entirely different, and also supported by Class::Declare) greatly simplifies the specification of Class::Declare-derived class and instance methods. This should aid in the porting of existing code (Perl, Java and C++) to a Class::Declare framework, as well as simplify the development of new modules.
With the addition of Perl attributes, Class::Declare methods can now be written as
sub method : public
{
my $self = shift;
...
}
instead of
sub method
{
my $self = __PACKAGE__->public( shift );
...
}
Access Modifier Eclipse Plug-in 1.2.6
Access Modifier Eclipse Plug-in allows the user to change the visibility and other modifiers of Java classes. more>>
The plug-in lets you modify the access modifiers of classes, interfaces, methods and fields through a popup menu. The following choices are available, each one changing the selected items visibility:
public public
protected protected
default default
private private
In addition to changing the visibility of the marked element, you can also set or unset the final, static and synchronized modifiers:
final/not final
static/not static
synchronized/not synchronized
java-diff 1.0.5
java-diff is a set of Java classes which implement the longest common subsequences algorithm. more>>
java-diff compares the elements in two arrays, returning a list of Difference objects, each of which describes an addition, deletion, or change between the two arrays.