Object oriented programming (OOP)

Step-by-step

approach with screen-shots

We get an exception.

Given below is an example code for using the global class we defined.

REPORT ZGB_OOPS_BANK .

DATA: acct1 type ref to zaccountaa.

DATA: bal type i.

create object: acct1.

selection-screen begin of block a.
parameters: p_amnt type dmbtr,
p_dpst type dmbtr,
p_wdrw type dmbtr.

selection-screen end of block a.

start-of-selection.

call method acct1->set_balance( p_amnt ).
write:/ 'Set balance to ', p_amnt.

bal = acct1->deposit( p_dpst ).
write:/ 'Deposited ', p_dpst ,' bucks making balance to ', bal.

bal = acct1->withdraw( p_wdrw ).
write:/ 'Withdrew ', p_wdrw ,' bucks making balance to ', bal.

This is the output.