Recompile Java class on middle tier

Question

<br>
We have a requirement where we have to disable Seeded EmployeeName LOV on the iexpense page but
there is hard coded validation in the AMImpl class file. I cant bypass it.
So I want to comment the lines which does the validation.
But I am unbale to recompile it as it throws errors.
I tried to comment the exception lines in Seeded AM and recompiled it again. But I get 3 errors when i
recompile on the middle tier. I know it is not patch independent. I just want to confirm.
When I comment these 3 lines it compiles successfully.
DetailAMImpl.java:430: cannot find symbol
symbol  : method copyFrom(oracle.apps.ap.oie.server.ExpenseReportLinesVORowImpl,oracle.jbo.domain.Number,oracle.jbo.domain.Number)
location: interface oracle.jbo.Row
                row.copyFrom(expensereportlinesvorowimpl, new Number(-10), expensereportlinesvorowimpl.getDistributionLineNumber());
                   ^
DetailAMImpl.java:432: cannot find symbol
symbol  : method setReportLineId(oracle.jbo.domain.Number)
location: interface oracle.jbo.Row
                row.setReportLineId(expensereportlinesvorowimpl.getReportLineId().multiply(-1));
                   ^
DetailAMImpl.java:447: cannot find symbol
symbol  : method bIsEmpty()
location: interface oracle.jbo.Row
        if(row.bIsEmpty())
              ^
Note: DetailAMImpl.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
3 errors
Can you pls tell me what could be the problem?

Answer 1

I have all the product specific classes in my myclasses folder which are related <b>OIE</b>. I do Not have Non-Product specific classes though in myclasses folder.
Could you pls suggest.
These are the imports in AM
import com.sun.java.util.collections.ArrayList;
import com.sun.java.util.collections.HashMap;
import java.sql.*;
import java.util.*;
<b>// Product related classes
import oracle.apps.ap.oie.entry.AttendeeRuleUI;
import oracle.apps.ap.oie.entry.accounting.server.ExpenseAllocationsAMImpl;
import oracle.apps.ap.oie.entry.accounting.server.ExpenseAllocationsVOImpl;
import oracle.apps.ap.oie.entry.server.*;
import oracle.apps.ap.oie.utility.OIEConstants;
import oracle.apps.ap.oie.utility.OIEUtil;</b>
import oracle.apps.fnd.common.*;
import oracle.apps.fnd.framework.OAException;
import oracle.apps.fnd.framework.OAFwkConstants;
import oracle.apps.fnd.framework.server.*;
import oracle.bali.share.util.BooleanUtils;
import oracle.jbo.*;
import oracle.jbo.domain.Number;
import oracle.jbo.server.*;
import oracle.sql.NUMBER;
Thanks