How do I create horizontal or vertical struts and glue for use with scala BoxPanel?

In Java, the class java.swing.Box contains m开发者_运维百科ethods to create horizontal and vertical struts and glue. Struts and glue is usefull to space elements when using BoxLayout.

Box.createHorizontalStrut(10)
Box.createVerticalStrut(10)

Box.createHorizontalGlue()
Box.createVerticalGlue()

Where can I find the corresponding methods in scala?

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I found the methods in the scala Swing companion object:

import swing.Swing

Swing.HStrut(10)
Swing.VStrut(10)

Swing.HGlue
Swing.VGlue