Hello, Everytime I press the continue and back button the previous frame never c

Question

Hello,

Everytime I press the continue and back button the previous frame never closes. If I select the continue button, Im taken to the next frame but the previous frame is still there How can I just have the active frame displayed at all times.

Below is the code.

package jframe;

import java.awt.Color;

import java.awt.EventQueue;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.WindowConstants;

import javax.swing.border.EmptyBorder;

import javax.swing.JComboBox;

import javax.swing.DefaultComboBoxModel;

//create class and extend with JFrame

public class jrrame1 extends JFrame

{

   //declare variable

   private JPanel contentPane;

   /**

   * Launch the application.

   */

   //main method

   public static void main(String[] args)

   {

       /* It posts an event (Runnable)at the end of Swings event list and is

       processed after all other GUI events are processed.*/

       EventQueue.invokeLater(new Runnable()

       {

           public void run()

           {

               //try - catch block

               try

               {

                   //Create object of OldWindow

                   jrrame1 frame = new jrrame1();

                   //set frame visible true

                   frame.setVisible(true);                  

               }

               catch (Exception e)

               {

                   e.printStackTrace();

               }

           }

       });

   }

   /**

   * Create the frame.

   */

   public jrrame1()//constructor

   {

      

       //set default close operation

       setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

       setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

       //set bounds of the frame

       setBounds(100, 100, 450, 300);

       //create object of JPanel

       contentPane = new JPanel();

       //set border

       contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

       //set ContentPane

       setContentPane(contentPane);

       //set null

       contentPane.setLayout(null);

      

       //create object of JButton and set label on it

       JButton btnNewFrame = new JButton("Continue");

       //add actionListener

       btnNewFrame.addActionListener(new ActionListener()

       {

           public void actionPerformed(ActionEvent arg0)

           {

              

               //call the object of NewWindow and set visible true

               jframe2 frame = new jframe2();

               setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

               frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

               frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

               frame.setVisible(true);

               //jrrame.setVisible(true);

          

               //set default close operation

              

           }

       });

       //set font of the Button

               btnNewFrame.setFont(new Font("Microsoft YaHei UI", Font.BOLD, 12));

               //set bounds of the Button

               btnNewFrame.setBounds(143, 195, 116, 25);

               //add Button into contentPane

               contentPane.add(btnNewFrame);

      

      

       JComboBox comboBox = new JComboBox();

       comboBox.setModel(new DefaultComboBoxModel(new String[] {"Test1", "Test2"}));

       comboBox.setBounds(93, 106, 248, 27);

       contentPane.add(comboBox);

      

          comboBox.addActionListener(new ActionListener() {

      public void actionPerformed(ActionEvent event) {

      JComboBox DeviceCB = (JComboBox) event.getSource();

      Object selectDevice = DeviceCB.getSelectedItem();

  

      if(selectDevice.toString().equals("Test 1"))

      {

         

      }

      }

      });      

   }

}

--------------

Other class

package jframe;

import java.awt.Color;

import java.awt.EventQueue;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import jframe.jrrame1;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.WindowConstants;

import javax.swing.border.EmptyBorder;

import javax.swing.JComboBox;

import javax.swing.DefaultComboBoxModel;

//create class and extend with JFrame

public class jframe2 extends jrrame1

{

   //declare variable

   private JPanel contentPane;

   /**

   * Launch the application.

   */

   //main method

   /**

   * Create the frame.

   */

   public jframe2() //constructor

   {

       //set default close operation

       setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

       //set bounds of the frame

       setBounds(100, 100, 450, 300);

      

       //create object of JPanel

       contentPane = new JPanel();

       //set border

       contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

       //set ContentPane

       setContentPane(contentPane);

       //set null

       contentPane.setLayout(null);

      

      

       //create object of JButton and set label on it

       JButton btnNewFrame = new JButton("Back");

       //add actionListener

       btnNewFrame.addActionListener(new ActionListener()

       {

           public void actionPerformed(ActionEvent arg0)

           {

              

               //call the object of NewWindow and set visible true

               jrrame1 frame = new jrrame1();

               setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

               frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

               frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

               frame.setVisible(true);

               //jrrame.setVisible(true);

          

               //set default close operation

              

           }

       });

       //set font of the Button

               btnNewFrame.setFont(new Font("Microsoft YaHei UI", Font.BOLD, 12));

               //set bounds of the Button

               btnNewFrame.setBounds(143, 195, 116, 25);

               //add Button into contentPane

               contentPane.add(btnNewFrame);

      

       JComboBox comboBox1 = new JComboBox();

       comboBox1.setModel(new DefaultComboBoxModel(new String[] {"Test3", "Test4"}));

       comboBox1.setBounds(77, 61, 230, 27);

       contentPane.add(comboBox1);

      

  

      

      

   }

}

Thanks

Explanation / Answer

jrrame1.java

package jframe;

import java.awt.Color;

import java.awt.EventQueue;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.WindowConstants;

import javax.swing.border.EmptyBorder;

import javax.swing.JComboBox;

import javax.swing.DefaultComboBoxModel;

//create class and extend with JFrame

public class jrrame1 extends JFrame

{

//declare variable

private JPanel contentPane;

/**

* Launch the application.

*/

//main method

public static void main(String[] args)

{

/* It posts an event (Runnable)at the end of Swings event list and is

processed after all other GUI events are processed.*/

EventQueue.invokeLater(new Runnable()

{

public void run()

{

//try - catch block

try

{

//Create object of OldWindow

jrrame1 frame = new jrrame1();

//set frame visible true

frame.setVisible(true);   

}
catch (Exception e)

{

e.printStackTrace();

}

}

});

}

/**

* Create the frame.

*/

public jrrame1()//constructor

{

  

//set default close operation

setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);

setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

//set bounds of the frame

setBounds(100, 100, 450, 300);

//create object of JPanel

contentPane = new JPanel();

//set border

contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

//set ContentPane

setContentPane(contentPane);

//set null

contentPane.setLayout(null);

  

//create object of JButton and set label on it

JButton btnNewFrame = new JButton("Continue");

//add actionListener

btnNewFrame.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent arg0)

{

//call the object of NewWindow and set visible true

jframe2 frame = new jframe2();

// setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
/*
*
* This is what you are looking for
*/
dispose();
/*
*
*
*/
frame.setVisible(true);

// frame.dispatchEvent(new WindowEvent(frame, WindowEvent.WINDOW_CLOSING));
//jrrame.setVisible(true);

  

//set default close operation

  

}

});

//set font of the Button

btnNewFrame.setFont(new Font("Microsoft YaHei UI", Font.BOLD, 12));

//set bounds of the Button

btnNewFrame.setBounds(143, 195, 116, 25);

//add Button into contentPane

contentPane.add(btnNewFrame);

  

  

JComboBox comboBox = new JComboBox();

comboBox.setModel(new DefaultComboBoxModel(new String[] {"Test1", "Test2"}));

comboBox.setBounds(93, 106, 248, 27);

contentPane.add(comboBox);

  

comboBox.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent event) {

JComboBox DeviceCB = (JComboBox) event.getSource();

Object selectDevice = DeviceCB.getSelectedItem();

  

if(selectDevice.toString().equals("Test 1"))

{

}

}

});   

}

}

jframe2.java

package jframe;

import java.awt.Color;

import java.awt.EventQueue;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import jframe.jrrame1;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.WindowConstants;

import javax.swing.border.EmptyBorder;

import javax.swing.JComboBox;

import javax.swing.DefaultComboBoxModel;

//create class and extend with JFrame

public class jframe2 extends jrrame1

{

//declare variable

private JPanel contentPane;

/**

* Launch the application.

*/

//main method

/**

* Create the frame.

*/

public jframe2() //constructor

{

//set default close operation

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

//set bounds of the frame

setBounds(100, 100, 450, 300);

  

//create object of JPanel

contentPane = new JPanel();

//set border

contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

//set ContentPane

setContentPane(contentPane);

//set null

contentPane.setLayout(null);

  

  

//create object of JButton and set label on it

JButton btnNewFrame = new JButton("Back");

//add actionListener

btnNewFrame.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent arg0)

{

  

//call the object of NewWindow and set visible true

//.dispose();
jrrame1 frame = new jrrame1();

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
/*
*
* This is what you are looking for
*/
dispose();
/*
*
*
*/
frame.setVisible(true);

//jrrame.setVisible(true);

  

//set default close operation

  

}

});

//set font of the Button

btnNewFrame.setFont(new Font("Microsoft YaHei UI", Font.BOLD, 12));

//set bounds of the Button

btnNewFrame.setBounds(143, 195, 116, 25);

//add Button into contentPane

contentPane.add(btnNewFrame);

  

JComboBox comboBox1 = new JComboBox();

comboBox1.setModel(new DefaultComboBoxModel(new String[] {"Test3", "Test4"}));

comboBox1.setBounds(77, 61, 230, 27);

contentPane.add(comboBox1);

  

comboBox1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent event) {

JComboBox DeviceCB = (JComboBox) event.getSource();

Object selectDevice = DeviceCB.getSelectedItem();

  

if(selectDevice.toString().equals("Test 1"))

{

comboBox1.setEnabled(false);

}

}

});  

  

  

}

}

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.