Grid layout.

[Mani]

Applied Reasoning #36
A panel has a GridLayout with 2 rows and 2columns.There is a button in each of the cells and another button is added as follows.
aPanel.add(new Button("bob"));
Where will the Button be placed.
a)row 1 column 3
b)row 1 column 1
c)row 3 column 1
d)row 2 column 3
e)row 2 column 2
Ans given e
My ans d.
In explanation to ans they have specified that
When a component is added to the full GridLayout, anew column is added.
If this is true, new button has to come at row 2 column 3 , am i right??

[Anonymous]

Mani:
the answer e is correct....
Check this code :

import java.awt.*;
public class Grid2 extends Frame {
  public Grid2() {
    setLayout(new GridLayout(2,2));
    setSize(400,400);
    for (int i = 0; i < 4; i++ )
        add(new Button("Button # " + i ));
    add (new Button ("Button # 5"));
  }
  public static void main(String[] args) {
    Grid2 g2 = new Grid2();
    g2.setVisible(true);
  }
}

Also, RHE mentions in the book that when a grid layout
has to manage either fewer number or components or much
more components than the allocated number of spaces, strange
behaviour may be seen in some cases.
Btw, the output will be:

Button # 0 Button # 1 Button # 2
Button # 3 Button # 5

Regds.
- satya

[This message has been edited by satya5 (edited May 01, 2000).]

[Mani]

So can I take like this,
If we add more components to a GridLayout than its no: of rows or columns, extra components will be placed above the last column of the last row.

[Anonymous]

Mani:
I would not want to make any generalised statements here.
However, for your intrest, I would suggest the following:
take the code above and play around doing these:
1. change the value used in the for loop (i < 4)
say make it 10 and see what happens.
2. change the grid layout size (2,2) to someother size
say (5,6).
3. or what ever you think is appropriate.
such things would make you have your own opinion, rather than
assuming people like me (excluding the bartenders and sherrifs) are correct with their statements.
Actually, this weekend I was doing this.
Please don't take me in a wrong sense.
Regds.
- satya

[priyavardheesh]

hi mani,
when we try to add extra components then, new columns are added to accomadate those components. after the columns are added, the components are rearranged like how normally the grids are filled(row wise)
regards,
priya