Home | JSP | EJB | JDBC | Java Servlets | WAP  | Free JSP Hosting  | Spring Framework | Web Services | BioInformatics | Java Server Faces | Jboss 3.0 tutorial | Hibernate 3.0 | XML

Tutorial Categories: Ajax | Articles | JSP | Bioinformatics | Database | Free Books | Hibernate | J2EE | J2ME | Java | JavaScript | JDBC | JMS | Linux | MS Technology | PHP | RMI | Web-Services | Servlets | Struts | UML


Java Tutorials



Struts Tutorials

Struts Resources

Visit Forum! Post Questions!
Jobs At RoseIndia.net!

Java Notes

Methods - Calling

What happens when a method is called

  1. Space on the call stack is reserved for the return address, the local variables and formal parameters, and perhaps other things in the current method that must be saved.
  2. The actual parameters are copied into the formal parameters.
  3. Execution is transferred to the beginning of the called method.
  4. When the method returns, the return address specifies where to continue execution in the caller and the caller's state is restored. If the method returned a value, that value is passed back to the caller.

Calling a method

When you call a method outside your class, you must put an object or class name in front of it, then a dot, then the method call. For example,
    g.drawRect(10, 20, 30, 40);
This calls the drawRect method in the class of g (Graphics) with 4 int parameters. Internally there are five parameters: the Graphics object, and the four int parameters. The method can then reference all of the fields in the Graphics object without any special notation.

When you call methods which are defined in your own class, you don't need to write an object in front of them if they are working on the same fields (the same object). However, it is sometimes clearer to write this. in front of them to make it clear that you are calling the method with the current object. [needs examples]
Ask programming questions?



Add This Tutorial To:
  Del.icio.us   Digg   Google   Spurl   Blink   Furl   Simpy   Y! MyWeb 

Current Comments

0 comments so far (post your own) View All Comments Latest 10 Comments:
  JDO Tutorials
  EAI Articles
  Struts Tutorials
  Java Tutorials
  Java Certification

Tell A Friend
Your Friend Name


Browse all Java Tutorials
Java JSP Struts Servlets Hibernate XML
Ajax JDBC EJB MySQL JavaScript JSF
Maven2 Tutorial JEE5 Tutorial Java Threading Tutorial Photoshop Tutorials Linux Technology
Technology Revolutions Eclipse Spring Tutorial Bioinformatics Tutorials Tools SQL

Home | JSP | EJB | JDBC | Java Servlets | WAP  | Free JSP Hosting  | Search Engine | News Archive | Jboss 3.0 tutorial | Free Linux CD's | Forum | Blogs

About Us | Advertising On RoseIndia.net  | Site Map

India News

Send your comments, Suggestions or Queries regarding this site at roseindia_net@yahoo.com.

Copyright 2007. All rights reserved.

[an error occurred while processing this directive]