Call japplet from jframe

Question

I Designed JApplet class manually and I designed main class by using Netbean Builder which generate the code automatically by default the class will be extends JFrame  so how can I run the JApplet class from JFrame   this JApplet code the problem now is buttons does not appear Updated  import java awt BorderLayout  import java awt Dimension  import java awt Toolkit  import java awt event ActionEvent  import javax swing ImageIcon  import javax swing JApplet  import javax swing JButton  import javax swing JFrame  import javax swing JScrollPane  import javax swing JTable   public class GalaxyTable2 extends JFrame    JApplet      private static final int PREF W   700      private static final int PREF H   600      String   columnNames                         Phone Name    Brief Description    Picture    price                            Buy        Create image icons     ImageIcon Image1   new ImageIcon                      getClass   getResource  s1 png         ImageIcon Image2   new ImageIcon                      getClass   getResource  s2 png         ImageIcon Image3   new ImageIcon                      getClass   getResource  s3 png         ImageIcon Image4   new ImageIcon                      getClass   getResource  s4 png         ImageIcon Image5   new ImageIcon                      getClass   getResource  note png         ImageIcon Image6   new ImageIcon                      getClass   getResource  note2 png         ImageIcon Image7   new ImageIcon                      getClass   getResource  note3 png          Object     rowData               Galaxy S    3G Support CPU 1GHz               Image1  120  false             Galaxy S II    3G Support CPU 1 2GHz               Image2  170  false             Galaxy S III    3G Support CPU 1 4GHz               Image3  205  false             Galaxy S4    4G Support CPU 1 6GHz               Image4  230  false             Galaxy Note    4G Support CPU 1 4GHz               Image5  190  false             Galaxy Note2 II    4G Support CPU 1 6GHz               Image6  190  false             Galaxy Note 3    4G Support CPU 2 3GHz               Image7  260  false          MyTable ss   new MyTable                      rowData  columnNames           Create a table     JTable jTable1   new JTable ss        public GalaxyTable2         jTable1 setRowHeight 70        add new JScrollPane jTable1      BorderLayout CENTER      JFrame f   new JFrame        this setTitle  Galaxy Phones       JButton button   new JButton  Home      button setSize new Dimension 200  500      button setLocation 400  500     f getContentPane   add button     JButton button2   new JButton  Confirm      button2 setSize new Dimension 100  500      button2 setLocation 100  300        button2 addActionListener null     f getContentPane   add button2     f setDefaultCloseOperation JFrame EXIT ON CLOSE       this setSize 800  700     this setLocation 300  0            Override      public Dimension getPreferredSize             return new Dimension PREF W  PREF H              public void actionPerformed ActionEvent e            new AMainFrame7   setVisible true              public static void main String   args              GalaxyTable2 b new GalaxyTable2                       JFrame f   new JFrame             JButton button   new JButton  Home            button setSize new Dimension 100  50            button setLocation 400  500           f getContentPane   add button           JButton button2   new JButton  Confirm            button2 setSize new Dimension 100  50            button2 setLocation 200  500           button2 addActionListener null           f getContentPane   add button2           f setDefaultCloseOperation JFrame EXIT ON CLOSE           f setTitle  Galaxy Phones            f setSize 500  500           f getContentPane   add f  button2           applet init            applet start              b pack             Dimension d   Toolkit getDefaultToolkit   getScreenSize            b setLocation  d width - b getSize   width    2                           d height - b getSize   height    2           b setVisible true              and this action code in main class  private void jButton4ActionPerformed java awt event ActionEvent evt                                             new GalaxyTable   setVisible true    dispose

User · Accepted Answer

First of all  Applets are designed to be run from within the context of a browser  or applet viewer   they re not really designed to be added into other containers   Technically  you can add a applet to a frame like any other component  but personally  I wouldn t   The applet is expecting a lot more information to be available to it in order to allow it to work fully   Instead  I would move all of the  application  content to a separate component  like a JPanel for example and simply move this between the applet or frame as required     ps- You can use f setLocationRelativeTo null  to center the window on the screen     Updated  You need to go back to basics   Unless you absolutely must have one  avoid applets until you understand the basics of Swing  case in point     Within the constructor of GalzyTable2 you are doing     JApplet app   new JApplet    add app   app init    app start         Why are you adding another applet to an applet    Case in point     Within the main method  you are trying to add the instance of JFrame to itself     f getContentPane   add f  button2     Instead  create yourself a class that extends from something like JPanel  add your UI logical to this  using compound components if required   Then  add this panel to whatever top level container you need   Take the time to read through Creating a GUI with Swing  Updated with example  import java awt BorderLayout  import java awt Dimension  import java awt EventQueue  import java awt event ActionEvent  import javax swing ImageIcon  import javax swing JButton  import javax swing JFrame  import javax swing JPanel  import javax swing JScrollPane  import javax swing JTable  import javax swing UIManager  import javax swing UnsupportedLookAndFeelException   public class GalaxyTable2 extends JPanel        private static final int PREF W   700      private static final int PREF H   600       String   columnNames                         Phone Name    Brief Description    Picture    price                            Buy        Create image icons     ImageIcon Image1   new ImageIcon                      getClass   getResource  s1 png         ImageIcon Image2   new ImageIcon                      getClass   getResource  s2 png         ImageIcon Image3   new ImageIcon                      getClass   getResource  s3 png         ImageIcon Image4   new ImageIcon                      getClass   getResource  s4 png         ImageIcon Image5   new ImageIcon                      getClass   getResource  note png         ImageIcon Image6   new ImageIcon                      getClass   getResource  note2 png         ImageIcon Image7   new ImageIcon                      getClass   getResource  note3 png          Object     rowData               Galaxy S    3G Support CPU 1GHz               Image1  120  false             Galaxy S II    3G Support CPU 1 2GHz               Image2  170  false             Galaxy S III    3G Support CPU 1 4GHz               Image3  205  false             Galaxy S4    4G Support CPU 1 6GHz               Image4  230  false             Galaxy Note    4G Support CPU 1 4GHz               Image5  190  false             Galaxy Note2 II    4G Support CPU 1 6GHz               Image6  190  false             Galaxy Note 3    4G Support CPU 2 3GHz               Image7  260  false          MyTable ss   new MyTable                      rowData  columnNames           Create a table     JTable jTable1   new JTable ss        public GalaxyTable2             jTable1 setRowHeight 70            add new JScrollPane jTable1                           BorderLayout CENTER            JPanel buttons   new JPanel             JButton button   new JButton  Home            buttons add button           JButton button2   new JButton  Confirm            buttons add button2            add buttons  BorderLayout SOUTH               Override      public Dimension getPreferredSize             return new Dimension PREF W  PREF H              public void actionPerformed ActionEvent e            new AMainFrame7   setVisible true              public static void main String   args             EventQueue invokeLater new Runnable                  Override             public void run                     try                       UIManager setLookAndFeel UIManager getSystemLookAndFeelClassName                       catch  ClassNotFoundException   InstantiationException   IllegalAccessException   UnsupportedLookAndFeelException ex                        ex printStackTrace                                       JFrame frame   new JFrame  Testing                    frame setDefaultCloseOperation JFrame EXIT ON CLOSE                   frame add new GalaxyTable2                     frame pack                    frame setLocationRelativeTo null                   frame setVisible true                                       You also seem to have a lack of understanding about how to use layout managers   Take the time to read through Creating a GUI with Swing and Laying components out in a 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[java] Call japplet from jframe

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