The same concepts apply to left-to-right layout. In this section, we'll talk about top-to-bottom (Y axis) layout.
If you run into trouble or you want to take advantage ofĪlignments and minimum, preferred, and maximum sizes into account. They're simply how Swing components draw their edges.ĭon't let the length of the BoxLayout discussion
#Center a label in a flowlayout java code
You can sometimes use empty borders to create space around components.įor example, the preceding code snippet usesīetween all sides of the dialog and its contents,Īnd between the two parts of the contents.īorders are completely independent of layout managers. That grows as necessary to absorb any extra space in its container.Īs an alternative to using invisible components, This glue is an invisible lightweight component The first component added to the container is glue. To place the buttons at the right side of their container, Then the code adds two buttons to the container, In this case, the rigid area has no widthĪnd puts exactly 5 pixels between the label and scroll pane.Īnd sets it up for the buttonPane container. The two arguments to the BoxLayout constructorĪnd the axis along with the components will be laid out.Īdd the label and scroll pane to the container, The first bold line creates a top-to-bottom box layoutĪnd sets it up as the layout manager for listPane. Put everything together, using the content pane's BorderLayout.Ĭontainer contentPane = getContentPane() ĬontentPane.add(listPane, BorderLayout.CENTER) ĬontentPane.add(buttonPane, BorderLayout.SOUTH) Lay out the buttons from left to right.ītLayout(new BoxLayout(buttonPane, BoxLayout.X_AXIS)) ītBorder(BorderFactory.createEmptyBorder(0, 10, 10, 10)) īuttonPane.add(Box.createHorizontalGlue()) buttonPane.add(cancelButton) buttonPane.add(Box.createRigidArea(new Dimension(10, 0))) buttonPane.add(setButton) tBorder(BorderFactory.createEmptyBorder(10,10,10,10)) ListPane.add(label) listPane.add(Box.createRigidArea(new Dimension(0,5))) listPane.add(listScroller) tLayout(new BoxLayout(listPane, BoxLayout.Y_AXIS)) Lay out the label and scroll pane from top to bottom. JScrollPane listScroller = new JScrollPane(list) Which is implemented as a JDialog subclass.
This code is in the constructor for the dialog, The applet will appear in a new browser window.īy creating one or more lightweight containersīoxLayout is also useful in some situationsĮach component's maximum size and X/Y alignment. To display a centered column of components: Here is an applet that demonstrates using BoxLayout You might think of it as a full-featured version of Or places them in a tight row from left to right. The Swing packages include a general purpose layout manager named Lesson: Laying Out Components Within a Container
#Center a label in a flowlayout java how to
How to Use BoxLayout The Java TM Tutorial
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