Answer / kalyan

Bascially DAO is used in three tier architecture.
Three tire architecture is comprised of the following layers

1.Presentaion layer
2.Business layer
3.Data Access layer

Data Access layer will have all the code to intercat with
the data base server.so that when next time the data base
server is changed there is no need to chane in the present
and business layers.

when exactly should we use throws ,and wen exactly should we use the try and catch for exceptional handling

0 Answers  

---

What is an Ioc pattern? There are assemblies in .net for establishing this task, Whats the special in Java /j2ee technologies about IOC

2 Answers  

---

What are the types of interface used in the java collections? : java collections

0 Answers  

---

Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance

0 Answers   NSN,

---

Should we create system software ( e.g operating system ) in java ?

0 Answers  

---

how to deploy the web application ?

2 Answers   Accent,

---

what is diff string and stringbuffer

7 Answers   CTS, HCL,

---

Hi Friends, i have searched in google but not clear. can you give bank example with synchronized keyword

0 Answers   TCS,

---

What are the classes in the java collection framework? : java collections

0 Answers  

---

can u draw class/object diagram for ATM

0 Answers   HCL, Zycus Infotech,

---

which book is the best for preparing for SCWCD 1.5

4 Answers   Google,

---

How do you create UserTransaction Object? How do you rollback a transaction in a method?

1 Answers   HCL,

---