Four common layouts for Java Swing

The third card layout can be used to complete a simple lottery program, which is quite interesting.

One: Flow layout flowlayout

Implementation code:

Import java.awt.FlowLayout; import javax.swing.JFrame; import Javax.swing.JButton; class tester{public    static void Main (String args[])    {        JFrame frame = new JFrame ("streaming layout");        Frame.setlayout (New FlowLayout (flowlayout.center,3,3));        JButton button = null;        for (int i=0;i<20;i++)        {button            = new JButton ("button" +i);            Frame.add (button);        }        Frame.setsize (600,600);        Frame.setvisible (True);}    }

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II: Boundary layout Manager

Code:

Import java.awt.BorderLayout; import Javax.swing.JButton; import javax.swing.JFrame; class tester{public   static void Main (String args[])   {       JFrame frame = new JFrame ("Boundary Layout");       Frame.setlayout (New BorderLayout (3,3));       Frame.add (New JButton ("East"), Borderlayout.east);       Frame.add (New JButton ("West"), borderlayout.west);       Frame.add (New JButton ("South"), Borderlayout.south);       Frame.add (New JButton ("North"), Borderlayout.north);       Frame.add (New JButton ("Medium"), borderlayout.center);       Frame.setsize (600,600);       Frame.setvisible (True);}   }

Three: Table layout (GridLayout)

Code:

Import java.awt.GridLayout; import javax.swing.JFrame; import Javax.swing.JButton; class tester{public    static void Main (String args[])    {        JFrame frame = new JFrame ("Table layout");        Frame.setlayout (New GridLayout (3,5,13,13));  The four digits correspond to the horizontal spacing of the ranks, the vertical spacing        JButton button = null;        for (int i=0;i<20;i++)        {button            = new JButton ("button" +i);            Frame.add (button);        }        Frame.pack ();   Automatically adjusts        frame.setvisible (true) according to the panel size required by the component;}    }

Four: Card layout

Code:

Import java.awt.Container; import javax.swing.JFrame; import Javax.swing.JLabel; import java.awt.CardLayout; class        tester{public static void Main (String args[]) {JFrame frame = new JFrame ("card management");        CardLayout card = new CardLayout ();        Frame.setlayout (card);        Container con = Frame.getcontentpane ();        Con.add (New JLabel ("Candidate number One", Jlabel.center), "first");        Con.add (New JLabel ("Candidate No. Second", Jlabel.center), "second");        Con.add (New JLabel ("Candidate No. Third", Jlabel.center), "third");        Con.add (New JLabel ("Candidate No. Fourth", Jlabel.center), "fourth");        Con.add (New JLabel ("Candidate No. Fifth", Jlabel.center), "fifth");        Frame.pack ();        Frame.setvisible (TRUE); Card.show (Con, "third");//show a third for (int i=0;i<5;i++) {try {Thread.slee           P (1500);           }catch (Interruptedexception IE) {ie.printstacktrace ();  } card.next (Con); Traversal}}}

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Four common layouts for Java Swing