Tracing

**feniger** · 12-29-2007, 01:35 AM

I have a logical bug, I mean my code compiles and runs without errors,
only it doesnt do what I wanted it to.
I remember when I programmed in prolog I could trace the code - one command at a time, and figure out where my bug is,
can I do the same in java? using eclipse.

**wsaryada** · 12-29-2007, 01:38 AM

Sure you can do it in Eclipse. You can run you application a debug mode. You debug a simple java application or even a web application if you want.

**feniger** · 12-29-2007, 01:45 AM

excuse my ignorancy, how do I do that?

**wsaryada** · 12-29-2007, 02:37 AM

If you work java appplication, from the Run menu you can select the Debug menu. Or right click in the text editor and select Debug As... Java Application.

**tim** · 12-29-2007, 09:32 AM

Hello feniger

Try looking in the program's menus for a "step in" or "step over" command and remember its shortcut key. If you use "step in" the debugger will run into each method it encounters, while "step over" will run the method and continue to the next line of code. Most IDEs have this functionality. You must be in debug mode though.

It is also useful to use break points in your program. The program will execute normally while you are in debug mode and when it encounters a break point, it will stop and then you can take a look at your variables by using adding watch.

I have never used eclipse, but I think it should, at least, have these debugging features available. ;) If it does not, consider using Netbeans.

**feniger** · 12-29-2007, 01:08 PM

I should probably use netbeans... its got more tutorials anyway...

**dubdubdub** · 12-29-2007, 04:19 PM

is eclipse or some other program free?
Sorry to sound so cheap,
Maybe I should go and buy Borland if I want too take java seriously.

**feniger** · 12-29-2007, 07:43 PM

both java and eclipse are great AND free...
you should probably search around for information about Java to take it more seriously...

**dubdubdub** · 12-29-2007, 09:17 PM

Thank you for your speedy reply feniger
Is this any better than Netbeans I see they are about the same size to download (well sort of) and I am downloading Netbeans6 at the moment just 6 more hours to go (50% so far).

From Eric

**feniger** · 12-29-2007, 09:42 PM

I'd recommand you finish downloading netbeans, and learn through that cause its a more popular IDE.
I use eclipse because I got used to it before I knew about netbeans,
now I dont have time and will to switch.

**dubdubdub** · 12-30-2007, 02:25 AM

OK I have just taken my "Moderator friendly" pill and now I am very happy & over the moon.

I just spent all morning downloading Netbeans6 all (98 Meg of it) and I go to install and it says I need JDK 1.5.0_06 I must of had a older version (and that means another big down load) almost as big as the other file what a ............... [opps I feel the pill wearing off I must go]

---- more ----
I just found out there is a smaller download called jGRASP program
jGRASP Home Page

**CaptainMorgan** · 12-30-2007, 10:36 AM

Originally Posted by dubdubdub

is eclipse or some other program free?
Sorry to sound so cheap,
Maybe I should go and buy Borland if I want too take java seriously.

FREE! :) Oh, and if you want to do serious coding in java, use Netbeans. ;)

EDIT: Oh, good, I see you got Netbeans... you can find the Netbeans 6.0/JDK bundle on Suns site for more convenience.

**feniger** · 01-04-2008, 07:42 PM

Originally Posted by CaptainMorgan

FREE! :) Oh, and if you want to do serious coding in java, use Netbeans. ;)

CaptainMorgan,
is there a concrete reason why NetBeans is more professional than eclipse?
at first glimpse they look very similar,
whats your opinion about it and what is unique in NetBeans?