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   ► KBTo/From GuidesJavaTool Basics  Print This     

Cross Ref > Tool Basics

By Mike Prestwood

Java versus Corel Paradox: A side by side comparison between Java and Corel Paradox.

 
Tool Basics
 

Developer environment basics such as common file extensions, common keyboard shortcuts, etc.

Deployment Overview

[Other Languages] 
Java: 

Java applets and applications both require the Java Runtime Environment (JRE) and any additional dependencies you've added.

More Info / Comment
Corel Paradox: 

To deploy a Paradox application, you need to deploy either the full version of Paradox or the Paradox Runtime both of which will include the BDE as well as any dependecies you've added such as psSendMail DLL, ezDialogs, etc.

More Info / Comment




Development Tools

[Other Languages] 

Languages Focus

Primary development tool(s) used to develop and debug code.

Java: 

Many compilers and development tools are available. Common development tools include Sun's J2EE, CodeGear JBuilder, and Eclipse.

More Info / Comment
Corel Paradox: 

Corel Paradox for Windows (was Borland Paradox). Also, Borland used to offer a Paradox for DOS tool which support it's Paradox Application Language (PAL) which is not compatible with ObjectPAL. The biggest drawback to Paradox is that Corel does not have anyone at Corel actively developing Paradox for Windows (as opposed to Microsoft Access which does).





File Extensions

[Other Languages] 

Languages Focus

Common or primary file extensions used (not a complete list, just the basics).

Java:   .java

The customary primary source file extension for Java code is ".java" which could contain anywhere from a single class to the entire source code.

Other important files:

  • .JAR - Java archive file (compressed code file). Archive that contains multiple Java files and is compressed using .ZIP compression; stores Java classes and metadata and may be digitally signed; runs as a program if the Java Runtime Environment (JRE) is installed on the computer.
  • .CLASS - compiled source code which are platform-independent. If a source file has more than one class, each class is compiled into a separate .class file. These .class files can be loaded by any Java Virtual Machine (JVM).
Corel Paradox: 

Paradox for Windows has two primary file types: source files and delivered files:

Source Files
Source files in Paradox are binary but can can be opened in later versions of Paradox and even in earlier versions if you don't use any new features.

  • .FSL = Form
  • .RSL = Report
  • .SSL = Script
  • .LSL = Library

Since Paradox source files do not compile to an EXE, Paradox developers tend to use a startup form or script to start the application.





Overview and History

[Other Languages] 
Java: 

Promoted as a single source cross-platform runtime system (Write Once, Run Anywhere). Java builds on and in some ways simplifies the object oriented features of C++. Java applications are typically compiled to byte-code and can run on any platform running the Java Virtual Machine (JVM).

Target Platforms: Java is suitable for creating many types of cross-platform applications that target the JVM including desktop business applications as well as Java applets which target all the major web browsers.

More Info / Comment
Corel Paradox: 

Language Overview: Object based language. Although ObjectPAL uses object oriented techniques "under the hood", it is not object oriented. Although you cannot create classes, ObjectPAL has built-in objects you can use in your code. You code in a traditional approach attaching code to objects or within a script. Most Paradox applications are form based. You may have a short startup script but you design forms and reports and tie them together with a common form. You can store reusable code such as custom methods and procedures in a library.

Target Platforms: Corel Paradox is most suitable for creating business desktop applications that run within Corel Paradox for Windows.

More Info / Comment  




Report Tools Overview

[Other Languages] 

Languages Focus

Built-In: Some development tools have a reporting tool built-in and some do not. For example, typically desktop databases such as Paradox and Access have a built-in reporting tool and typically that reporting tool is used with nearly every application built with it. A built-in reporting tool makes development of reports across many clients and applications consistent and therefore easy.

Add-On: Development tools that do not have a built-in reporting tool need to use either a currently bundled report writer, or one of the popular reporting tools that integrates well with the development tool. For example, popular reporting tools include Crystal Reports, ReportBuilder, and MS SQL Reporting Services (tied to MS SQL).

Java: 

Both Eclipse 3.3 and JBuilder 2008 come bundled with Business Intelligence and Reporting Tools (BIRT). BIRT is an Eclipse-based open source reporting system with both a report designer based on Eclipse, and a runtime component that you can add to your app server plus a charting engine that lets you add charts.

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Corel Paradox:   Built-In

Paradox offers a built-in reporting tool that will suffice for most desktop database applications.

More Info / Comment




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