IPC JAVA ROUTINES Help needed

Hi IPC Gurus,

I am new to IPC and developing an CRM IPC java routine for a Condition value formula in ECC.

Q 1 .. How do we convert the SELECT SINGLE statements in JAVA as the JCO cannot be used in IPC 7.0. The piece of code looks like :

select single *
into ls_ct_lim
from yam_ct_lim
where vkorg eq tkomk-vkorg
and vtweg eq tkomk-vtweg
and spart eq tkomk-spart
and konda eq tkomk-konda
and kschl eq xkomv-kschl.

Here again how do we access a 'Y' table in ECC.

Q 2.. How do we make calls to 'Z' FMs that are called in the ABAP code.. Is there any way to minimize the overall JAVA coding as I have a very very limited knowledge of JAVA.

Any kind of helps or suggestions are welcomed..!

Regards,

Mayank