explain Java to me please

[salomeharrison@xxxxxxxxx (Salome Harrison)]

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?

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?

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?

Thanks,
Salome
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