while(rs.next()){

out.print(rs.getString(1));
out.print(rs.getString(2));
out.print(rs.getString(3));
out.print(rs.getString(4));
out.print(rs.getString(5));
out.print(rs.getString(6));
out.print("<input type='checkbox' id='checkbox1' value="+rs.getString(1)+"  name='checkbox1'>");

} 我输出的内容:
aa  aa   aa   aa   aa    aa     checkbox现在我想弄一个自增的ID 让CHECKBOX的ID 自动改变为checkbox2  checkbox3
请问该怎么改