New to Java

Hello
I am new to Java Programming
I am facing a problem which i did not know how to solve so i need help from experts of this forum
I have JTable of lets say 5 columns and from that i want to hide some columsn e.g i want to get only column 0(or ist column) and column 5(5th column) visible to me and not the inbetween columns(i.e 2,3,4) so i coded it like this:

for(int count=0;count< ConnectedDrivestable.getColumnCount();count++)
		{
			
			tcm = ConnectedDrivestable.getColumnModel();
			cm=tcm.getColumn(count);
		    
		    if( count==0 || count==4)
		    {
		    	cm.setPreferredWidth(15);
			cm.setMinWidth(0);			     
		    	cm.setMaxWidth(15);		    	
		    }
		    else {
		    	//ConnectedDrivestable.removeColumn(cm);
                       //ConnectedDrivestable.removeColumn(tcm.getColumn(count));
		    	cm.setPreferredWidth(0);
			cm.setMinWidth(0);		
		    	cm.setMaxWidth(0);
		    }
		    
		    
		}

where ConnectedDrivestable is my JTable of lets say 5 rows and 5 columns
tcm is TableColumnModel and cm is TableColumn object

But the problem is that i am getting vertical line in between and that is the intersection line of column 1 and column 5(i.e the intersection line of two columns that are visible) i dont want this in between vertical line to appear
I really dont know how to fix this problem i have searched on internet but unable to find the appropriate solution to it

Also as shown in my code i tried to work with removeColumn method which documentation says should remove the desired columns but i dont know why it is not functioing for my case the way i acpected am i doing something wrong or?

So urgent help from people here is required

Thanks in advance

Imran