Layout managers arrange components in containers. The default is FlowLayout. Other layout managers include BorderLayout, GridLayout, CardLayout, and GridBagLayout. Each layout manager positions components differently - for example, BorderLayout uses fixed areas, GridBagLayout arranges components in a grid using constraints.

1. Layout ManagerLayout Manager
Arranges the layout of window containing diffArranges the layout of window containing diff
controls.controls.
Default is the flow LayoutDefault is the flow Layout
setLayout() :setLayout() :
void setLayout(Layout Managervoid setLayout(Layout Manager
lyoutObj)lyoutObj)
Disable layout by passingDisable layout by passing nullnull for objectfor object
Component can be manually placed byComponent can be manually placed by
usingusing setBounds()setBounds()
minimumLayoutSize()minimumLayoutSize()
preferredLayoutSize()preferredLayoutSize()

2. Types of Layout ManagerTypes of Layout Manager
1. FlowLayout1. FlowLayout
2.BorderLayout2.BorderLayout
3. GridLayout3. GridLayout
4. CardLayout4. CardLayout
5. GridbagLayout5. GridbagLayout

3. FlowLayoutFlowLayout
 It is default flowlayoutIt is default flowlayout
 Implements simple layout styleImplements simple layout style
 Constructor are-Constructor are-
- FlowLayout()FlowLayout()
- FlowLayout(int how)FlowLayout(int how)
- FlowLayout(int how, int horz, int vert )FlowLayout(int how, int horz, int vert )
 Valid values for how-Valid values for how-
 FlowLayout.LEFTFlowLayout.LEFT
 FlowLayout.RIGHTFlowLayout.RIGHT
 FlowLayout.CENTERFlowLayout.CENTER

4. BorderLayoutBorderLayout
 The border layout has four narrow, fixed-The border layout has four narrow, fixed-
width components at the edges & 1 largewidth components at the edges & 1 large
area in the centerarea in the center
 Constructor of BorderLayout are-Constructor of BorderLayout are-
-BorderLayout()-BorderLayout()
-BorderLayout(int horz, int vert)-BorderLayout(int horz, int vert)
 Component can be used with add() methodComponent can be used with add() method
Void add(component compobj, ObjectVoid add(component compobj, Object
region)region)

5. BorderLayoutBorderLayout
 BorderLayout Defines certain regionBorderLayout Defines certain region
-BorderLayout.CENTER-BorderLayout.CENTER
-BorderLayout.SOUTH-BorderLayout.SOUTH
-BorderLayout.EAST-BorderLayout.EAST
-BorderLayout.WEST-BorderLayout.WEST
-BorderLayoutNORTH-BorderLayoutNORTH

6. GridLayoutGridLayout
 Used to layout Component in twoUsed to layout Component in two
dimensional griddimensional grid
 Need to define no. of rows & col.Need to define no. of rows & col.
 Constructors are-Constructors are-
--GridLayout ()GridLayout ()
- GridLayout(int noRows, int noCols)GridLayout(int noRows, int noCols)
- GridLayout(int noRows, int noCols, int horz, int vert)GridLayout(int noRows, int noCols, int horz, int vert)

7. CardLayoutCardLayout
 The CardLayout class manages the components inThe CardLayout class manages the components in
such a manner that only one component is visible atsuch a manner that only one component is visible at
a time. It treats each component as a card that isa time. It treats each component as a card that is
why it is known as CardLayout.why it is known as CardLayout.
 Constructor are-Constructor are-
 CardLayout( )CardLayout( )
 CardLayout(intCardLayout(int horz, int vert)horz, int vert)
 use this form of add( ) when adding cards to a paneluse this form of add( ) when adding cards to a panel
 void add(Componentvoid add(Component panelObj, Object name)panelObj, Object name)

8. CardLayoutCardLayout
Methods defined byMethods defined by CardLayoutCardLayout
 void first(Containervoid first(Container deck)deck)
 void last(Containervoid last(Container deck)deck)
 void next(Containervoid next(Container deck)deck)
 void previous(Containervoid previous(Container deck)deck)
 void show(Containervoid show(Container deck, String cardName)deck, String cardName)

9. GridbagLayoutGridbagLayout
 The class GridBagLayout arranges components inThe class GridBagLayout arranges components in
a horizontal and vertical manner Implements simplea horizontal and vertical manner Implements simple
layout stylelayout style
 each GridBagLayout object maintains a dynamic,each GridBagLayout object maintains a dynamic,
rectangular grid of cells, with each componentrectangular grid of cells, with each component
occupying one or more cellsoccupying one or more cells
 Constructor are-Constructor are-
 GridBagLayout()GridBagLayout()
 Method used to set constraintsMethod used to set constraints
-void setContsraints(Component-void setContsraints(Component
comp,Gridbagconstraints cns)comp,Gridbagconstraints cns)

10. GridbagLayoutGridbagLayout
Absolute ValuesAbsolute Values
 GridBagConstraints.NORTHGridBagConstraints.NORTH
GridBagConstraints.SOUTHGridBagConstraints.SOUTH
GridBagConstraints.WESTGridBagConstraints.WEST
GridBagConstraints.EASTGridBagConstraints.EAST
GridBagConstraints.NORTHWESTGridBagConstraints.NORTHWEST
GridBagConstraints.NORTHEASTGridBagConstraints.NORTHEAST
GridBagConstraints.SOUTHWESTGridBagConstraints.SOUTHWEST
GridBagConstraints.SOUTHEASTGridBagConstraints.SOUTHEAST
GridBagConstraints.CENTER (the default)GridBagConstraints.CENTER (the default)

11. GridbagLayoutGridbagLayout
Orientation Relative ValuesOrientation Relative Values
 GridBagConstraints.PAGE_STARTGridBagConstraints.PAGE_START
GridBagConstraints.PAGE_ENDGridBagConstraints.PAGE_END
GridBagConstraints.LINE_STARTGridBagConstraints.LINE_START
GridBagConstraints.LINE_ENDGridBagConstraints.LINE_END
GridBagConstraints.FIRST_LINE_STARTGridBagConstraints.FIRST_LINE_START
GridBagConstraints.FIRST_LINE_ENDGridBagConstraints.FIRST_LINE_END
GridBagConstraints.LAST_LINE_STARTGridBagConstraints.LAST_LINE_START
GridBagConstraints.LAST_LINE_ENDGridBagConstraints.LAST_LINE_END

12. GridbagLayoutGridbagLayout
Baseline Relative ValuesBaseline Relative Values
 GridBagConstraints.BASELINEGridBagConstraints.BASELINE
GridBagConstraints.BASELINE_LEADINGGridBagConstraints.BASELINE_LEADING
GridBagConstraints.BASELINE_TRAILINGGridBagConstraints.BASELINE_TRAILING
GridBagConstraints.ABOVE_BASELINEGridBagConstraints.ABOVE_BASELINE
GridBagConstraints.ABOVE_BASELINE_LEADINGGridBagConstraints.ABOVE_BASELINE_LEADING
GridBagConstraints.ABOVE_BASELINE_TRAILINGGridBagConstraints.ABOVE_BASELINE_TRAILING
GridBagConstraints.BELOW_BASELINEGridBagConstraints.BELOW_BASELINE
GridBagConstraints.BELOW_BASELINE_LEADINGGridBagConstraints.BELOW_BASELINE_LEADING
GridBagConstraints.BELOW_BASELINE_TRAILINGGridBagConstraints.BELOW_BASELINE_TRAILING