are prepareCall and prepareStatement interchangeable when calling derby system procedures?

[Mike Matrigali]

I see both use of prepareCall and prepareStatement in the tests.
Are both right?  If not is it surprising that the tests pass?


I see code in ImportExportBaseTest like the following:
protected void doExportTable(String schemaName,
                             String tableName,
                             String fileName,
                             String colDel ,
                             String charDel,
                             String codeset) throws SQLException
{
    String expsql =
        "call SYSCS_UTIL.SYSCS_EXPORT_TABLE (? , ? , ? , ?, ? , ?)";
    PreparedStatement ps = prepareStatement(expsql);
    ps.setString(1, schemaName);
    ps.setString(2, tableName);
    ps.setString(3, fileName);
    ps.setString(4, colDel);
    ps.setString(5, charDel);
    ps.setString(6, codeset);
    ps.execute();
    ps.close();
}


And I see code in ImportExportProcedureTest like the following:
cSt = prepareCall(
    "call SYSCS_UTIL.SYSCS_EXPORT_TABLE (null, 'EX_EMP' "
    + ", 'extinout/emp.dat' , null, null, null) ");