How to start printing of subreport on new Page when just a little place still emptay on the current page of a Jasperreport ?

[kemodh1998fb]

i want to avoid printing when the current page have just little place still emptay like just for Title or just for Title and Column header of a subreport.
When this is the fall, then i want to start printing on the new page, so it should be on the current page emptay place for Title and columnheader and at least one data row to allow printing on otherwise it should move print data to new page.