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 ::   Tutorials
 ::   Presentations
Perl & CGI tutorials
 ::   Intro to Perl/CGI and HTML Forms
 ::   Intro to Windows Perl
 ::   Intro to Perl 5
 ::   Intro to Perl
 ::   Intro to Perl Taint mode
 ::   Sherlock Holmes and the Case of the Broken CGI Script
 ::   Writing COM Components in Perl

Java tutorials
 ::   Intro to Java
 ::   Cross Browser Java

Misc technical tutorials
 ::   Intro to The Web Application Development Environment
 ::   Introduction to XML
 ::   Intro to Web Design
 ::   Intro to Web Security
 ::   Databases for Web Developers
 ::   UNIX for Web Developers
 ::   Intro to Adobe Photoshop
 ::   Web Programming 101
 ::   Introduction to Microsoft DNA

Misc non-technical tutorials
 ::   Misc Technopreneurship Docs
 ::   What is a Webmaster?
 ::   What is the open source business model?
 ::   Technical writing
 ::   Small and mid-sized businesses on the Web

Offsite tutorials
 ::   ISAPI Perl Primer
 ::   Serving up web server basics
 ::   Introduction to Java (Parts 1 and 2) in Slovak


Introduction to Web Programming
Operator Overloading  
  • Another cool feature of Java is that methods in Java can easily be overloaded such that the same method name can be used for several different implementations of the same action. Remember our previous example of printNumber(), printLetter(), printImage()?

  • The only requirement for overloading is that each version of the method takes a different set of parameters as arguments (sometimes, we say that it has a "different signature") such as in the following example:

    int add(int a, int b)
      return (a+b);
    double add(double a, double b)
      return (a+b);
    float add(float a, float b)
      return (a+b);

  • Finally, it is worth noting that since methods belong to specific classes, it is fine for you to have the same method name with the same arguments in different classes. Thus, the Button class might have a setLabel(String s) method and a Label might have a setLabel(String s) method and neither will conflict since each method is specific to a specific class.

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