Java Reference
In-Depth Information
Go down into
HelloWorld
:
Desktop/
$
cd HelloWorld
And now you're here:
code/
HelloWorld/
build.sh
bin/
Canary.inf
dist/
src/
HelloWorld.jar
helloworld/
helloworld/
HelloWorld.class
HelloWorld.java
Now list the files there. You'll see this:
$
ls
Canary.inf bin/ build.sh dist/ src/
My system (Mac OS X) is configured to show directories with a slash at the
end. (If yours isn't, try typing
ls-F
.) So here I have two files and three directories
in my current directory. File types are often represented by the last part of
the file name—its suffix. Here I have a shell script with an
.sh
suffix, and a
config file with an
.inf
suffix. Down in the
src/
directory there's a
helloworld
sub-
directory; there I have a Java source file with a
.java
suffix (more about these
kinds of files as we go along).
To go down into the
src
directory, type
cdsrc
, and you're there.
$
cd src
$
ls
helloworld
Then down one more into
helloworld
:
$
cd helloworld
$
ls
HelloWorld.java
In the
src/helloworld
directory, there's the
HelloWorld.java
file—the “guts” of our
first plugin.