java布局管理器（Java layout manager）.docVIP

java布局管理器（Java layout manager） The java.awt package defines common layout management: FlowLayout, BorderLayout, CardLayout, GridLayout, BoxLayout and GridBagLayout Class FlowLayout Panel/JPanel and Applet: the default FlowLayout behavior in order to join the unit from left to right order, after a row full arranged from left to right to continue to the next line, components in each row are positioned centrally. FlowLayout CENTER, LEFT and RIGHT attributes control assembly for alignment of each row. (1) create FlowLayout layout 1 (FlowLayout) to create a FlowLayout layout, alignment, vertical and horizontal spacing is 5 pixels by default The FlowLayout (int align align) alignment, vertical and horizontal spacing is 5. The FlowLayout (int align, int hgap, int vgap) alignment for align, vertical and horizontal spacing are respectively hgap and vgap. (2) common method 1 (set/getAlignment) 2 (set/getHgap) 3 (set/getVgap) (3) the use of FlowLayout layout manager For using the FlowLayout container, adding method of component calls the following: add (component name);. Set up a container for FlowLayout layout strategy, the method call as follows: setLayout (New) (FlowLayout);. Disadvantages: when the user to zoom, layout changes Advantages: suitable for small components Class BorderLayout Frame/JFrame, JDialog, JWindow, JApplet use BorderLayout by default. The container is divided into 5 regions: East, South, West and North. The middle zone is the remaining north and South and East and west regions are filled. When the vertical window, South and North, area extends; and when the window extends horizontally, East and West, in the area also extends. If an area is not assigned components, other components can occupy its space. For example, if not the northern component, the components of Western and Eastern will expand upward to the volume The above is, if not the eastern and western distribution module, the central component will be extended to the left and right borders of th