Five common la s of Swing and wing in java

Five common la s of Swing and wing in java

1. Border layout (BorderLayout)

2. FlowLayout)

3. GridLayout)

4. BoxLaYout)

5. Empty layout (null)

There are two other layout S: GridBagLayout (grid package layout) and CardLayout (card layout)

Note: The default layout of JFrame and JDialog is BorderLayout, while that of JPanel and Applet is FlowLayout.

Sample Code for border layout:

Import java. awt. borderLayout; import javax. swing. JButton; import javax. swing. JFrame; public class BorderLayoutExample extends JFrame {JButton btn1 = new JButton ("East"); JButton btn2 = new JButton ("South "); JButton btn3 = new JButton ("West"); JButton btn4 = new JButton ("North"); JButton btn5 = new JButton ("medium"); BorderLayoutExample () {init (); this. setTitle ("border layout"); this. setResizable (true); this. setSize (200,200); this. setLocationRelativeTo (null); this. setdefaclocloseoperation (EXIT_ON_CLOSE); this. setVisible (true);} void init () {this. setLayout (new BorderLayout (); // default value:; Horizontal spacing: 10; Vertical spacing: 5 this. add (btn1, BorderLayout. EAST); this. add (btn2, BorderLayout. SOUTH); this. add (btn3, BorderLayout. WEST); this. add (btn4, BorderLayout. NORTH); this. add (btn5, BorderLayout. CENTER) ;}public static void main (String args []) {new BorderLayoutExample ();}}

Running result:

Sample Code for stream layout:

Import java. awt. flowLayout; import javax. swing. JButton; import javax. swing. JFrame; public class FlowLayoutExample extends JFrame {JButton btn1 = new JButton ("one"); JButton btn2 = new JButton ("two "); JButton btn3 = new JButton ("three"); JButton btn4 = new JButton ("four"); JButton btn5 = new JButton ("five"); FlowLayoutExample () {init (); this. setTitle ("stream layout"); this. setResizable (true); this. setSize (200,200); this. setLocationRelativeTo (null); this. setdefaclocloseoperation (EXIT_ON_CLOSE); this. setVisible (true);} void init () {this. setLayout (new FlowLayout (FlowLayout. LEFT,); // The default value is center; Horizontal spacing is 10, Vertical spacing is 5 this. add (btn1); this. add (btn2); this. add (btn3); this. add (btn4); this. add (btn5);} public static void main (String args []) {new FlowLayoutExample ();}}

Running result:

Grid layout sample code:

Import java. awt. gridLayout; import javax. swing. JButton; import javax. swing. JFrame; public class GridLayoutExample extends JFrame {JButton btn1 = new JButton ("one"); JButton btn2 = new JButton ("two "); JButton btn3 = new JButton ("three"); JButton btn4 = new JButton ("four"); JButton btn5 = new JButton ("five"); GridLayoutExample () {init (); this. setTitle ("table layout"); this. setResizable (true); this. setSize (300,200); this. setLocationRelativeTo (null); this. setdefaclocloseoperation (EXIT_ON_CLOSE); this. setVisible (true);} void init () {this. setLayout (new GridLayout (,); // The default value is 1 row and n column; 2 rows and 3 columns, with a horizontal spacing of 10 and a Vertical spacing of 5this. add (btn1); this. add (btn2); this. add (btn3); this. add (btn4); this. add (btn5);} public static void main (String args []) {new GridLayoutExample ();}}

Running result:

Sample Code for Box layout:

Import javax. swing. box; import javax. swing. boxLayout; import javax. swing. JButton; import javax. swing. JFrame; public class BoxLaYoutExample extends JFrame {JButton btn1 = new JButton ("one"); JButton btn2 = new JButton ("two "); JButton btn3 = new JButton ("three"); JButton btn4 = new JButton ("four"); JButton btn5 = new JButton ("five"); BoxLaYoutExample () {init (); this. setTitle ("table layout"); this. setResizable (true); this. setSize (300,200); this. setLocationRelativeTo (null); this. setdefaclocloseoperation (EXIT_ON_CLOSE); this. setVisible (true);} void init () {this. setLayout (new BoxLayout (this. getContentPane (), BoxLayout. x_AXIS); // you can use the Box container instead of/Box box Box = new Box (BoxLayout. y_AXIS); box. add (btn ...); box. add (creat ..); this. add (btn1); this. add (btn2); this. getContentPane (). add (Box. createHorizontalStrut (10); // when the x layout is used, add a fixed-width component to separate it. // this. getContentPane (). add (Box. createVerticalStrut (5); // when y is used, add a fixed height component to separate this. add (btn3); this. add (btn4); this. add (btn5);} public static void main (String args []) {new BoxLaYoutExample ();}}

Running result:

Sample Code for empty layout:

Import javax. swing. JButton; import javax. swing. JFrame; public class NullLayoutExample extends JFrame {JButton btn1 = new JButton ("one"); JButton btn2 = new JButton ("two "); JButton btn3 = new JButton ("three"); JButton btn4 = new JButton ("four"); JButton btn5 = new JButton ("five"); NullLayoutExample () {init (); this. setTitle ("Empty layout"); this. setResizable (true); this. setSize (300,300); this. setLocationRelativeTo (null); this. setdefaclocloseoperation (EXIT_ON_CLOSE); this. setVisible (true);} void init () {this. setLayout (null); btn1.setBounds (10, 0,100, 50); // x coordinate 10, y coordinate 0, component width 100, height 50btn2. setBounds (20, 50,100, 50); btn3.setBounds (30,100,100, 50); btn4.setBounds (40,150,100, 50); btn5.setBounds (50,200,100, 50); this. add (btn1); this. add (btn2); this. add (btn3); this. add (btn4); this. add (btn5);} public static void main (String args []) {new NullLayoutExample ();}}

Running result: