The BoxLayout, SpringLayout, and Box classes are defined in the javax.swing package. The BoxLayout manager is the default for the Box container class.Īllows components to have their position defined by 'springs' or 'struts' fixed to an edge of the container or another component in the container. In either case the components are clipped to fit if necessary, rather than wrapping to the next row or column. This arranges components either in a row or in a column. This is a complicated layout manager with a lot of flexibility in how you control where components are placed in a container. This also places the components into an arrangement of rows and columns but the rows and columns can vary in length. Places components in the container in a rectangular grid with the number of rows and columns that you specify. Only the 'top' component is visible at any one time. Places components in a container one on top of the other – like a deck of cards. This layout manager is the default for the contentPane in a JFrame, JDialog, or JApplet object. The component in the center fills the available space. Places components against any of the four borders of the container and in the center. It is the default layout manager for JPanel objects. Its primary use is for arranging buttons although you can use it with other components. This works in much the same way as your text processor placing words on a line. Places components in successive rows in a container, fitting as many on each row as possible, and starting on the next row as soon as a row is full. The names of these classes and the basic arrangements that they provide are as follows: We will look at six layout manager classes in a little more detail. Since the classes that define layout managers all implement the LayoutManager interface, you can use a variable of type LayoutManager to store any of them if necessary. Just let the layout manager take care of it. The layout manager for a container determines the position and size of all the components in the container: you should not change the size and position of such components yourself. It is possible to create your own layout manager classes, but creating layout managers is beyond the scope of this book. There are many layout manager classes provided in the java.awt and javax.swing packages, so we will introduce those that you are most likely to need. All containers will have a default layout manager but you can choose a different layout manager when necessary. MainFrame.An object called a layout manager determines the way that components are arranged in a container. StatusLabel = new JLabel("",JLabel.CENTER) HeaderLabel = new JLabel("",JLabel.CENTER ) MainFrame = new JFrame("Java SWING Examples") ![]() ![]() SwingLayoutDemo swingLayoutDemo = new SwingLayoutDemo() This class inherits methods from the following classes −Ĭreate the following Java program using any editor of your choice in say D:/ > SWING > com > tutorialspoint > gui > Returns a string representation of this FlowLayout object and its values. Sets the vertical gap between the components. Sets the horizontal gap between the components. Removes the specified component from the layout. Void removeLayoutComponent(Component comp) Returns the preferred dimensions for this layout given the visible components in the specified target container. Returns the minimum dimensions needed to layout the visible components contained in the specified target container.ĭimension preferredLayoutSize(Container target) Gets the vertical gap between the components.ĭimension minimumLayoutSize(Container target) Gets the horizontal gap between the components. Void addLayoutComponent(String name, Component comp)Īdds the specified component to the layout. For example, to the right in left-to-right orientations.Ĭonstructs a new FlowLayout with a centered alignment and a default 5-unit horizontal and vertical gap.Ĭonstructs a new FlowLayout with the specified alignment and a default 5-unit horizontal and vertical gap.įlowLayout(int align, int hgap, int vgap)Ĭreates a new flow layout manager with the indicated alignment and the indicated horizontal and vertical gaps. Static int TRAILING − This value indicates that each row of components should be justified to the trailing edge of the container's orientation. Static int RIGHT − This value indicates that each row of components should be right-justified. ![]() Static int LEFT − This value indicates that each row of components should be left-justified. For example, to the left in left-to-right orientations. Static int LEADING − This value indicates that each row of components should be justified to the leading edge of the container's orientation. ![]() Static int CENTER − This value indicates that each row of components should be centered. Class Declarationįollowing is the declaration for class −įollowing are the fields for class − The class FlowLayout components in a left-to-right flow.
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