explain Java to me please

[nascif@xxxxxxxxxxxxxxxxxx (Nascif Abousalh-Neto)]

Hi Salome,

Please note that this forum is not the most adequate to basic questions.
A good place to start would be the Sun tutorials, at
http://java.sun.com/docs/books/tutorial/.

That said, let's go to your questions.

Salome Harrison wrote:

> Hi all,
>
> I have a few questions about how Java works.
>
> 1)  When I am surfing the net and come across a page
> that requires Java, how am I able to view the page if
> I don't have Java on my machine?  Is it using the
> plugin?

Either the plug-in or the built-in JVM of your browser. It actually
depends on how the HTML page that contains the applet is coded. Take a
look at the plug-in Web page at
http://www.javasoft.com/products/plugin/index.html

> 2)  When I make an applet for Netscape and have java
> installed on the machine but not the plugin, how does
> Netscape actually run java for the applet?  Is it
> using the jre with java or what?

No, Netscape already comes with a JVM, so it can execute Java code (not
the most recent versions, though) without the plug-in.

> 3)  If I have JDK1.2.2 installed do I also need to
> install JRE 1.2.2?  If so, why since there is a jre
> with Java 1.2.2 already?

You don't need to install the JRE if you have the JDK installed.

Regards and good luck,
    Nascif


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