Layout Manager

• A layout manager is an object that implements the LayoutManager interface and determines the size and position of the components within a container.
• Content pane defaults to BorderLayout
• JPanel layout defaults to FlowLayout

• A panel's layout manager can be set using the constructor

JPanel panel = new JPanel(new BorderLayout());

• Alternately it can be set using

panel.setLayout(new FlowLayout());

• Instead of using a layout absolute positioning can be used by setting the layout to null
• Arguments to add method depend on the layout manager. For example, BorderLayout requires to specify the area to which the component is to be added