Is it possible to have a java swing border only on the top side?

Question

I know how to create borders using BorderFactory but I don't see anything that lets me specify what sides I want the border on :S

score 90 · Answer 1 · edited May 13 '18 at 22:21

90

You can use the MatteBorder to specify the dimensions of the border in each side. The constructor of MatteBorder is:

public MatteBorder(int top,
                   int left,
                   int bottom,
                   int right,
                   Color matteColor)

So if you want to have a border only on the bottom and right sides of your JPanel, you could write something like this:

JPanel panel = new JPanel();
panel.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 1, Color.BLACK));

edited May 13 '18 at 22:21

IvanRF

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answered Feb 01 '10 at 02:40

Alex Ntousias

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Is there an easy way to get the MatteBorder to use bevel style rounding for the corners? I need to use the matte border to control the sides of the element that are rendered, but i'm stuck with square corners. ;-( – emeraldjava Mar 23 '10 at 15:57
3

Plus 1 for actually providing code. This should be the accepted answer! – Hunter S Nov 10 '15 at 03:39

score 47 · Accepted Answer · edited Jun 20 '20 at 09:12

47

From Sun tutorial:

The next picture shows some matte borders. When creating a matte border, you specify how many pixels it occupies at the top, left, bottom, and right of a component.

(Java docs)

edited Jun 20 '20 at 09:12

Community

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answered Feb 01 '10 at 02:45

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score 6 · Answer 3 · answered Feb 01 '10 at 02:39

Matte and empty border allow you to specify the sizes on each side, which may be zero.

The Border interface itself is quite easy to implement yourself if you want a custom look. I guess there may be third party libraries available containing styles not included within the Java library.

score 2 · Answer 4 · edited Nov 02 '18 at 21:17

2

text_field.setBorder( new MatteBorder(2, 0, 0, 0, Color.black));

The values can be varied accordingly.

edited Nov 02 '18 at 21:17

Maksym

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answered Nov 02 '18 at 19:09

salman pk

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Is it possible to have a java swing border only on the top side?

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