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openjdk / 21 / java.desktop / java / awt / layoutmanager.html

Interface LayoutManager

All Known Subinterfaces:
LayoutManager2
All Known Implementing Classes:
BasicComboBoxUI.ComboBoxLayoutManager, BasicInternalFrameTitlePane.TitlePaneLayout, BasicInternalFrameUI.InternalFrameLayout, BasicOptionPaneUI.ButtonAreaLayout, BasicScrollBarUI, BasicSplitPaneDivider.DividerLayout, BasicSplitPaneUI.BasicHorizontalLayoutManager, BasicSplitPaneUI.BasicVerticalLayoutManager, BasicTabbedPaneUI.TabbedPaneLayout, BorderLayout, BoxLayout, CardLayout, DefaultMenuLayout, FlowLayout, GridBagLayout, GridLayout, GroupLayout, JRootPane.RootLayout, JSpinner.DateEditor, JSpinner.DefaultEditor, JSpinner.ListEditor, JSpinner.NumberEditor, MetalComboBoxUI.MetalComboBoxLayoutManager, MetalScrollBarUI, MetalTabbedPaneUI.TabbedPaneLayout, OverlayLayout, ScrollPaneLayout, ScrollPaneLayout.UIResource, SpringLayout, SynthScrollBarUI, ViewportLayout 
public interface LayoutManager
Defines the interface for classes that know how to lay out Containers.

Swing's painting architecture assumes the children of a JComponent do not overlap. If a JComponent's LayoutManager allows children to overlap, the JComponent must override isOptimizedDrawingEnabled to return false.

See Also:

Method Summary

Modifier and Type Method Description
void addLayoutComponent(String name, Component comp)
If the layout manager uses a per-component string, adds the component comp to the layout, associating it with the string specified by name.
void layoutContainer(Container parent)
Lays out the specified container.
Dimension minimumLayoutSize(Container parent)
Calculates the minimum size dimensions for the specified container, given the components it contains.
Dimension preferredLayoutSize(Container parent)
Calculates the preferred size dimensions for the specified container, given the components it contains.
void removeLayoutComponent(Component comp)
Removes the specified component from the layout.

Method Details

addLayoutComponent

void addLayoutComponent(String name, Component comp)
If the layout manager uses a per-component string, adds the component comp to the layout, associating it with the string specified by name.
Parameters:
name - the string to be associated with the component
comp - the component to be added

removeLayoutComponent

void removeLayoutComponent(Component comp)
Removes the specified component from the layout.
Parameters:
comp - the component to be removed

preferredLayoutSize

Dimension preferredLayoutSize(Container parent)
Calculates the preferred size dimensions for the specified container, given the components it contains.
Parameters:
parent - the container to be laid out
Returns:
the preferred dimension for the container
See Also:

minimumLayoutSize

Dimension minimumLayoutSize(Container parent)
Calculates the minimum size dimensions for the specified container, given the components it contains.
Parameters:
parent - the component to be laid out
Returns:
the minimum dimension for the container
See Also:

layoutContainer

void layoutContainer(Container parent)
Lays out the specified container.
Parameters:
parent - the container to be laid out

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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/java/awt/LayoutManager.html