How to stay on the same page after submit?

[Laserowy Wódz]

How to submit form and stay on same page?

I have this code in Java 

public String doDeleteCertainFilter(){ String userID = this.getHttpRequest().getParameter("userID"); ApplicationUser user = ComponentAccessor.getUserManager().getUserByKey(userID); getJiraUtils().deleteFilters(user); return this.getRedirect("/secure/PMOPWA.jspa"); }

In my velocity

#foreach ($filter in $filters) <tr role="row"> <td colspan="1" class="confluenceTd"><a href="">$filter.getUsername()</a></td> <td colspan="1" class="confluenceTd">$filter.getListWithFilters()</td> <td colspan="1" class="confluenceTd">$filter.getListWithFilters().size()</td> <td style="max-width:150px; word-wrap:break-word;" class="confluenceTd"> <a href="PMOPWA!DeleteCertainFilter.jspa?userID=${filter.getUserID()}" <span class="aui-icon aui-icon -small aui-iconfont-remove"></span> </td> #end