aspose file tools*
The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes tips from me Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Spring in Action this week in the Spring forum!
JavaRanch » Java Forums » Certification » Programmer Certification (SCJP/OCPJP)
Bookmark "tips from me" Watch "tips from me" New topic
Author

tips from me

sona gold
Ranch Hand

Joined: Feb 14, 2001
Posts: 234
hi guys
here r the tips i used and that helped me
1. take a print out of the tree like sturcture of the following and stick it some place where u can stand and see them for about 20 mts everyday
visuals are better remembered than text
I/O
components
menu components
events
if u have a confusion between component or container coming first
remember "m" comes before "n"
for the events that do not have coressponding classes
remember IATA
these have only one method and hence no class
in the hierarchy structure, IATA and components come on the first line and the rest are below component
for the components that generate item events ... remember all the components beginning with "c" and "List"
the rest generate action events + "list" also
the more obvious ones "adjustement even" text event" there is no confusion or need to memorise

now to come to I/O
the File class does not create a file
Reader, Writer , InputStream, OutputStream are all abstract and cannot be instantiated
so if u see anywhere (new Reader) or any of the others mentioned above..... it is an error.
For object representation and primitive representation you would use the ObjectInputStream or DataInputStream (and ofcourse the coressponding writer)
for character encoding
we use InputStreamReader and OutputStreamWrtier
Only FileInputStream, ByteArrayInputStream .. the first line of heirarchy can take the File constraint, the rest cannot take the File constraint directly
For the RandomAcessFile
only two forms are possible "r", and "rw"
"rw" will create the file if the file does not exist
It takes the File constraint only
thats it guys
if anything else comes up i will post it for sure


sona<br />SCJP
jeena jose
Ranch Hand

Joined: May 06, 2001
Posts: 69
thanks sona.explanation for I/O was helpful
rajashree ghatak
Ranch Hand

Joined: Mar 10, 2001
Posts: 151
Thanx sona.
ur tips are of great help.
rajashree.
Cindy Glass
"The Hood"
Sheriff

Joined: Sep 29, 2000
Posts: 8521


"JavaRanch, where the deer and the Certified play" - David O'Meara
Mikael Jonasson
Ranch Hand

Joined: May 16, 2001
Posts: 158
IATA?
/Mike
Ricardo Polero
Ranch Hand

Joined: May 18, 2001
Posts: 128
Thanks for the tips !
angelo celeste
Ranch Hand

Joined: Mar 21, 2001
Posts: 73
Hi Sona.
What is IATA?
-Angelo
Amit Barot
Greenhorn

Joined: May 29, 2001
Posts: 13
IATA ?
International Air Travel Agent?
rajashree ghatak
Ranch Hand

Joined: Mar 10, 2001
Posts: 151
IATA stands for Item,Action,Text,Adjustment events which have only one method and hence no corresponding adapter classes for them in AWT.
rajashree.
sona gold
Ranch Hand

Joined: Feb 14, 2001
Posts: 234
thanks rajshree for making my work easier
 
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
 
subject: tips from me