check if you have or don't have java.
if your system has Java, you want to check you have the the right
the DOS/command window (the black window thing).
to start the DOS/command window?
Vista and 7:
click on the start button on your tool bar. It's the multicolor
four flying windows thing.
will open a dialog box and one of the things is a field where you
can search for files.
that search box, type "cmd" short for command, without
the quotation marks and hit return key.
will open the cmd window (aka dos window) (aka the black window
is called the command window for a reason. You can type in
for the heck of it type "date" (without quotation marks
and hit return key).
should respond with current date-time.
above can also be explained as follows.
The > is a called a prompt. It signifies that computer is
listening to your commands. Computer prints it in the command
window to tell you it is ready for you (as opposed to being busy
working on something else).
may look like > or may look differently (%, $) but it is always
signifying that computer is listening.
all commands, you always have to hit the enter key. Since it is
always so, I may not even say it.
//means, at the prompt, type date and hit enter
-version //means, at the prompt, type " javac -version"
and hit enter
of three things will happen.
It prints "Command not recognized"
It prints some number different from current version, which means
you have old version.
It prints the current version.