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Thread: Create Phonebook using inheritance

  1. #1
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    Question Create Phonebook using inheritance

    Aloha,

    I'm new to Java and am having trouble understanding inheritance (super/subclass) and coding it. The assignment I have is to upgrade the CellPhoneGuiP that I created and add an address book to it. Here's my assignment:

    "Upgrade your phone application to include a “phone book”. That is, create a list of contacts and phone numbers that can be called from your cell phone. You must create a separate class to represent a contact, instantiate at least five contacts storing them in an array or a dynamic data structure. Your phone book must display on your cell phone display or “pop up” as a separate JFrame."

    Below is the my CellPhoneGui & the address Book code. I need some direction and understanding on how to do this. Any help will do.

    My code is below:

    import javax.swing.*;
    import java.awt.*;
    import java.awt.event.*;
    import java.text.*;
     
    public class CellPhoneGuiP extends JFrame
    {
         private JPanel displayPanel = new JPanel();            //display panel
         private JPanel funcPanel = new JPanel();            //function buttons SEND, CLEAR, REDIAL & END
         private JPanel addBookPanel = new JPanel();
         private JPanel buttonPanel = new JPanel();            //numerical buttons
         private JTextField display = new JTextField(25);        //to reference a text field
         private JTextField addBookDisplay = new JTextField(20);    
         private JLabel dlabel = new JLabel ("              Cell Phone Simulator            ");     
         private final String WINDOW_TITLE = "Cell Phone Gui";
     
         private JButton clearButton;            //Clear display
         private JButton sendButton;            //SEND button
         private JButton redialButton;            //Redial number button
         private JButton endButton;            //End the call
         private JButton exitButton;            //Exit Button
         private JButton addBookButton;            //Address Book button
     
         private JButton Button1;                //Button #1
         private JButton Button2;                //Button #2
         private JButton Button3;                //Button #3
         private JButton Button4;                //Button #4
         private JButton Button5;                //Button #5
         private JButton Button6;                //Button #6
         private JButton Button7;                //Button #7
         private JButton Button8;                //Button #8
         private JButton Button9;                //Button #9
         private JButton asterisk;                //asterisk button
         private JButton Button0;                //Button #0
         private JButton lbButton;                //pound sign button
     
         String numInput;                //variable that holds number dialed
     
         private final int WINDOW_WIDTH = 350;        //Window width
         private final int WINDOW_HEIGHT = 425;        //Window height
     
         // AddressBook is the JFrame or child JFrame that will be opened later. 
     
        AddressBook addBook =  new AddressBook(this);
     
         //instantiate the parent CellPhoneGuiP (parent)    
     
         public static void main(String[] args) {
        CellPhoneGuiP cp1 = new CellPhoneGuiP();
        cp1.init();
        cp1.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
         }
     
         // this builds the GUI from the child 
     
         void init() {
               addBook.addActionListener(new AddressBookListener());
               addBookPanel.setLayout(new BorderLayout());
               addBookPanel.add(addBookButton, BorderLayout.NORTH);
               addBookPanel.add(exitButton,BorderLayout.SOUTH);
               addBookPanel.add(display,BorderLayout.CENTER);
               add(addBookPanel);
               setSize(400,400);
     
               setVisible(true);
         }
     
         public CellPhoneGuiP() {
             super("Address Book");
             setTitle(WINDOW_TITLE);                //set the window title
             setSize(WINDOW_WIDTH, WINDOW_HEIGHT);        //set the size of the window
             setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    //specify an action for the close button
     
             buildDisplayPanel();
             buildFunctionPanel();                    //build the panel & add it to the frame
             buildButtonPanel();
             setLayout(new BorderLayout());                //create a BorderLayout manager
     
             add(displayPanel,BorderLayout.NORTH);            //add the panel to the frame's content pane
             add(buttonPanel,BorderLayout.CENTER);
             add(funcPanel,BorderLayout.SOUTH);
             clearScreen();
             setVisible(true);                        //display the window
          }
     
          private void buildDisplayPanel()
          {
        displayPanel.setLayout(new BorderLayout());    
        displayPanel.add(dlabel,BorderLayout.NORTH);         
        displayPanel.add(display,BorderLayout.CENTER);
        displayPanel.setBackground(Color.LIGHT_GRAY);
          }
     
          private void buildFunctionPanel()
          {
        funcPanel.setLayout(new GridLayout(3, 1));
        sendButton = new JButton("SEND");
                clearButton = new JButton("CLEAR");
                redialButton = new JButton("REDIAL");
                endButton = new JButton(" END ");
        addBookButton = new JButton("Address Book");
     
        funcPanel.add(sendButton);
        funcPanel.add(clearButton);
        funcPanel.add(endButton);
        funcPanel.add(redialButton);
        funcPanel.add(addBookButton);
     
         //add action listeners to function buttons
     
        sendButton.addActionListener(new SendButtonListener());
        clearButton.addActionListener(new ClearButtonListener());
        endButton.addActionListener(new EndButtonListener());
        redialButton.addActionListener(new RedialButtonListener());
        addBookButton.addActionListener(new AddressBookListener());
     
        //set color to background of function panel
     
        buttonPanel.setBackground(Color.LIGHT_GRAY);
          }
     
          private void buildButtonPanel()
          {
        buttonPanel.setLayout(new GridLayout(5, 5));
        buttonPanel.setBackground(Color.BLUE);
     
                  //create buttons with the appropriate captions
     
                Button1 = new JButton(" 1 ");
                Button2 = new JButton(" 2 ");
                Button3 = new JButton(" 3 ");
                Button4 = new JButton(" 4 ");
                Button5 = new JButton(" 5 ");
                Button6 = new JButton(" 6 ");
                Button7 = new JButton(" 7 ");
                Button8 = new JButton(" 8 ");
                Button9 = new JButton(" 9 ");
                asterisk = new JButton(" * ");
                Button0 = new JButton(" 0 "); 
                lbButton= new JButton(" # ");
     
                  //add the numeric buttons to the panel
     
        buttonPanel.add(Button1);
        buttonPanel.add(Button2);
        buttonPanel.add(Button3);
        buttonPanel.add(Button4);
        buttonPanel.add(Button5);
        buttonPanel.add(Button6);
        buttonPanel.add(Button7);
        buttonPanel.add(Button8);
        buttonPanel.add(Button9);
        buttonPanel.add(asterisk);
        buttonPanel.add(Button0);
        buttonPanel.add(lbButton);
     
        //add action listener to numeric buttons
     
        Button1.addActionListener(new ButtonListener());
        Button2.addActionListener(new ButtonListener());
        Button3.addActionListener(new ButtonListener());
        Button4.addActionListener(new ButtonListener());
        Button5.addActionListener(new ButtonListener());
        Button6.addActionListener(new ButtonListener());
        Button7.addActionListener(new ButtonListener());
        Button8.addActionListener(new ButtonListener());
        Button9.addActionListener(new ButtonListener());
        asterisk.addActionListener(new ButtonListener());
        Button0.addActionListener(new ButtonListener());
        lbButton.addActionListener(new ButtonListener());
            }    
     
            private class SendButtonListener implements ActionListener {
                 public void actionPerformed(ActionEvent e)
                    {
            numInput = display.getText();
                      send();
                    }
           }
           private class ClearButtonListener implements ActionListener {
                  public void actionPerformed(ActionEvent e)
                  {
                      clearScreen();
                  }
           }
           private class RedialButtonListener implements ActionListener {
                  public void actionPerformed(ActionEvent e)
                  {
                numInput = display.getText();
                      redial();
                  }
           }
           private class EndButtonListener implements ActionListener {
                  public void actionPerformed(ActionEvent e)
                  {
                      end();
                  }
           }
           private class AddressBookListener implements ActionListener {
                  public void actionPerformed(ActionEvent e)
        {
            addBook.setVisible(true);
            addBook.toFront();    
        }
           }
           private class ButtonListener implements ActionListener {
                  public void actionPerformed(ActionEvent e)
                  {
              if (e.getSource() == Button1) {
                         display.setText(display.getText() + "1"); }
            else if (e.getSource()  == Button2) {
                        display.setText(display.getText() + "2"); }
            else if (e.getSource()  == Button3) {
                        display.setText(display.getText() + "3"); }
              else if (e.getSource()  == Button4) {
                     display.setText(display.getText() + "4"); }
              else if (e.getSource()  == Button5) {
                        display.setText(display.getText() + "5"); }
              else if (e.getSource()  == Button6) {
                             display.setText(display.getText() + "6"); }
              else if (e.getSource()  == Button7) {
                             display.setText(display.getText() + "7"); }
              else if (e.getSource()  == Button8) {
                             display.setText(display.getText() + "8"); }
              else if (e.getSource()  == Button9) {
                             display.setText(display.getText() + "9"); }
              else if (e.getSource()  == asterisk) {
                             display.setText(display.getText() + "*"); }
                      else if (e.getSource()  == Button0) {
                             display.setText(display.getText() + "0"); }
            else if (e.getSource()  == lbButton) {
                             display.setText(display.getText() + "#"); }
                  }
          } //end of ButtonListener class
     
          //         Method to set the text field on CellPhoneGuiP (parent).  Called from addressBook (child) upon hiding.
     
          public void setAddressBookDisplay(String x) {
            addBookDisplay.setText(x);
            }
          public void clearScreen() {
                 display.setText(" ");
          }
          public void send() {
                      display.setText("Calling " + numInput);
          }
          public void end() {
               display.setText("Call Ended");
          }
          public void redial() {
             display.setText("Redialing " + numInput);
          }
    }
     
    =================address book====================================
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
     
    public class AddressBook extends CellPhoneGuiP
    {
         JLabel firstNameLabel;            //label for first name
         JLabel lastNameLabel;            //label for last name
         JLabel cellNumberLabel;            //label for cell number
         JTextField fNameTxtField;            //text field for first name
         JTextField lNameTxtField;            //text field for last name
         JTextField cNumTxtField;            //text field for cell number
     
         JPanel addBook = new JPanel;        //panel for address book
         JTextArea display;            //display Area
     
         JButton addButton;            //button to add information
         JButton callButton;            //button to send a call
         JButton exitButton;            //exit button
     
         //array for contact and cell numbers
     
         String cellContacts[] = new strName[5];    
         String cellNumbers[] = new cellNum[5];
     
         //initialize i variable
         i = 0;
     
         /**
        Constructor: 
        @param AddressBook -- Reference to CellPhoneGuiP, which is the parent JFrame
        */
     
        public AddressBook(AddressBook addBook)  
        {
        super("Address Book");
        this.addBook = addBook;
     
        init();
         }
     
         public void init()
         {
        JFrame addBook = getContentPane();
        addBook.setLayout(new FlowLayout());
     
        //set labels and text fields for the address book panel
     
        firstNameLabel = new JLabel ("First Name");
        lastNameLabel = new JLabel ("Last Name");
        cellNumLabel = new JLabel ("Cell Phone Number");
     
        fNameTxtField = new JTextField(25);
        lNameTxtField = new JTextField(25);
        cNumTxtField = new JTextField(15);
     
        addButton = new JButton("ADD");
        callButton = new JButton("CALL");
        exitButton = new JButton("EXIT");    
     
     
        //setting for the display area
     
        display = new JTextArea (11, 40);
     
        //add labels and buttons
     
        addBook.add(firstNameLabel);
        addBook.add(lastNameLabel);
        addBook.add(cellNumLabel);
        addBook.add(fNameTxtField);
        addBook.add(lNameTxtField);
        addBook.add(cellNumTxtField);
        addBook.add(display);
     
        //add Action Listeners
     
        addButton.addActionListener(this);
        callButton.addActionListener(this);
        exitButton.addActionListener(this);
         }
     
         public void actionPerformed(ActionEvent e) 
         {
        if (e.getSource() == addButton)
             addFunction();
        else if (e.getSource() == callButton)
             callFunction();
        else if (e.getSource() == exitButton)
             exitFunction();
         }
     
         public void addFunction()
         {
        cellNames[i] = fNameTxtField.getText() + " " + lNameTxtField.getTextField();
        cellNum[i] = cNumTxtField.getText();
        fNameTxtField.setText(" ");
        lNameTxtField.setText(" ");
        cNumTxtField.setText(" ");
        display.append("Added:  " + cellNames[i] + "\t\tCell Number: " + cellNum[i] + "\n");
        i++;
         }
     
         public void callFunction()
         {
        super.send(display);
     
         }
     
         public void exitFunction()
         {
        system.exit(0);
         }
    }


  2. #2
    mmm.. coffee JavaPF's Avatar
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    Default Re: PhoneBook Help

    Hello islandGirl and welcome to the Java Programming Forums

    When you post Java code in the future can you please place the [code] tags around your code. For example:



    It cleans everything up when you post and makes your code a lot easier to read. I've done it for you this time.

    Thanks!

    As for your assignment, I'm just about to go to bed for the night but ill look into this for you first thing in the morning and post a reply
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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  3. #3
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    Default Re: PhoneBook Help

    Hey islandGirl,

    Is there any more parts to the code you posted? I have just tried compiling it in Eclipse and there are a load of errors stopping it.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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  4. #4
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    Default Re: PhoneBook Help

    Good morning,

    No, there are no other parts to this code. I posted what I had done for the 3rd assignment, which I expected for the code to have errors. To run my Java programs, I've been using the dos command window (javac/java) as instructed by our instructor. The cellphonecode that I used in my 2nd assignment worked out fine, which I'm indicating below. So all I need to do in our 3rd assignment is add an address book to it using an array to store 5 contact names then make a call on one of the contacts on the list. The addressbook must popup in a separate JFrame.

    I don't understand how the super/subclass and how the arguments are pass from one class to another. So in my assignment case, will my Cellphone code be the parent class and then the child will be my phonebook? Also, is it better I start using either NetBeans or Eclipse to run all my assignment programs?

    Sorry, I'm really new to Java but I want to learn more on the programming side. I hope I'm not confusing you but I think the first thing we should do is look at my orginal cellphone code then maybe you can provide me with suggestions and understanding how I need to code the phonebook.

    Here is the original cellphone code:

    ]import javax.swing.*;
    import java.awt.*;
    import java.awt.event.*;
    import java.text.*;
     
    /**  
     
           @author islandGirl
    */
    public class CellPhoneGui extends JFrame
    {
         private JPanel displayPanel = new JPanel();		//display panel
         private JPanel funcPanel = new JPanel();		//function buttons
         private JPanel buttonPanel = new JPanel();		//numerical buttons
         private JTextField display = new JTextField(25);	//to reference a test field
         private JLabel dlabel = new JLabel ("             Cell Phone Simulator            ");     
         private final String WINDOW_TITLE = "Cell Phone Gui";
     
         private JButton clearButton;			//Clear display
         private JButton sendButton;			//SEND button
         private JButton redialButton;			//Redial number button
         private JButton endButton;			//End the call
         private JButton Button1;				//Button #1
         private JButton Button2;				//Button #2
         private JButton Button3;				//Button #3
         private JButton Button4;				//Button #4
         private JButton Button5;				//Button #5
         private JButton Button6;				//Button #6
         private JButton Button7;				//Button #7
         private JButton Button8;				//Button #8
         private JButton Button9;				//Button #9
         private JButton asterisk;				//asterisk button
         private JButton Button0;				//Button #0
         private JButton lbButton;				//pound sign button
     
         String numInput;				//variable that holds number dialed
         private final int WINDOW_WIDTH = 350;		//Window width
         private final int WINDOW_HEIGHT = 425;		//Window height
     
     
         public static void main(String[] args) {
    	new CellPhoneGui();
         }
     
     
         public CellPhoneGui() {
             setTitle(WINDOW_TITLE);				//set the window title
             setSize(WINDOW_WIDTH, WINDOW_HEIGHT);		//set the size of the window
             setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);	//specify an action for the close button
     
             buildDisplayPanel();
             buildFunctionPanel();				//build the panel & add it to the frame
             buildButtonPanel();
             setLayout(new BorderLayout());				//create a BorderLayout manager
     
             add(displayPanel,BorderLayout.NORTH);			//add the panel to the frame's content pane
             add(buttonPanel,BorderLayout.CENTER);
             add(funcPanel,BorderLayout.SOUTH);
             clearScreen();
             setVisible(true);				    	//display the window
          }
     
            private void buildDisplayPanel()
            {
    	displayPanel.setLayout(new BorderLayout());	
    	displayPanel.add(dlabel,BorderLayout.NORTH);         
    	displayPanel.add(display,BorderLayout.CENTER);
    	displayPanel.setBackground(Color.LIGHT_GRAY);
            }
     
            private void buildFunctionPanel()
            {
    	funcPanel.setLayout(new GridLayout(3, 1));
    	sendButton = new JButton("SEND");
            	clearButton = new JButton("CLEAR");
            	redialButton = new JButton("REDIAL");
            	endButton = new JButton(" END ");
     
    	funcPanel.add(sendButton);
    	funcPanel.add(clearButton);
    	funcPanel.add(endButton);
    	funcPanel.add(redialButton);
     
     	//add action listeners to function buttons
     
    	sendButton.addActionListener(new SendButtonListener());
    	clearButton.addActionListener(new ClearButtonListener());
    	endButton.addActionListener(new EndButtonListener());
    	redialButton.addActionListener(new RedialButtonListener());
     
    	//set color to background of function panel
     
    	buttonPanel.setBackground(Color.LIGHT_GRAY);
             }
     
             private void buildButtonPanel()
             {
    	buttonPanel.setLayout(new GridLayout(5, 7));
     
                  //create buttons with the appropriate captions
     
            	Button1 = new JButton(" 1 ");
            	Button2 = new JButton(" 2 ");
            	Button3 = new JButton(" 3 ");
            	Button4 = new JButton(" 4 ");
            	Button5 = new JButton(" 5 ");
            	Button6 = new JButton(" 6 ");
            	Button7 = new JButton(" 7 ");
            	Button8 = new JButton(" 8 ");
            	Button9 = new JButton(" 9 ");
            	asterisk = new JButton(" * ");
            	Button0 = new JButton(" 0 "); 
            	lbButton= new JButton(" # ");
     
                  //add the numeric buttons to the panel
     
    	buttonPanel.add(Button1);
    	buttonPanel.add(Button2);
    	buttonPanel.add(Button3);
    	buttonPanel.add(Button4);
    	buttonPanel.add(Button5);
    	buttonPanel.add(Button6);
    	buttonPanel.add(Button7);
    	buttonPanel.add(Button8);
    	buttonPanel.add(Button9);
    	buttonPanel.add(asterisk);
    	buttonPanel.add(Button0);
    	buttonPanel.add(lbButton);
     
    	//add action listener to numeric buttons
     
    	Button1.addActionListener(new ButtonListener());
    	Button2.addActionListener(new ButtonListener());
    	Button3.addActionListener(new ButtonListener());
    	Button4.addActionListener(new ButtonListener());
    	Button5.addActionListener(new ButtonListener());
    	Button6.addActionListener(new ButtonListener());
    	Button7.addActionListener(new ButtonListener());
    	Button8.addActionListener(new ButtonListener());
    	Button9.addActionListener(new ButtonListener());
    	asterisk.addActionListener(new ButtonListener());
    	Button0.addActionListener(new ButtonListener());
    	lbButton.addActionListener(new ButtonListener());
              }	
     
              private class SendButtonListener implements ActionListener {
             	public void actionPerformed(ActionEvent e)
                	{
    		numInput = display.getText();
    	              send();
                	}
              }
              private class ClearButtonListener implements ActionListener {
              	public void actionPerformed(ActionEvent e)
                  {
    	              clearScreen();
                  }
              }
              private class RedialButtonListener implements ActionListener {
              	public void actionPerformed(ActionEvent e)
                  {
    	    	numInput = display.getText();
    	              redial();
                  }
              }
              private class EndButtonListener implements ActionListener {
              	public void actionPerformed(ActionEvent e)
                  {
    	              end();
                  }
              }
              private class ButtonListener implements ActionListener {
                  public void actionPerformed(ActionEvent e)
                  {
    	  	if (e.getSource() == Button1) {
    	     	        display.setText(display.getText() + "1"); }
    		else if (e.getSource()  == Button2) {
    	     	       display.setText(display.getText() + "2"); }
    		else if (e.getSource()  == Button3) {
    	     	       display.setText(display.getText() + "3"); }
    	  	else if (e.getSource()  == Button4) {
    	  	       display.setText(display.getText() + "4"); }
    	  	else if (e.getSource()  == Button5) {
    	     	       display.setText(display.getText() + "5"); }
    	  	else if (e.getSource()  == Button6) {
    	                     display.setText(display.getText() + "6"); }
    	  	else if (e.getSource()  == Button7) {
    	                     display.setText(display.getText() + "7"); }
    	  	else if (e.getSource()  == Button8) {
    	                     display.setText(display.getText() + "8"); }
    	  	else if (e.getSource()  == Button9) {
    	                     display.setText(display.getText() + "9"); }
    	  	else if (e.getSource()  == asterisk) {
    	                     display.setText(display.getText() + "*"); }
    		  else if (e.getSource()  == Button0) {
    	                     display.setText(display.getText() + "0"); }
    		  else if (e.getSource()  == lbButton) {
    	                     display.setText(display.getText() + "#"); }
                  }
              } //end of ButtonListener class
     
              public void clearScreen() {
     	    	display.setText(" ");
              }
              public void send() {
    	              display.setText("Calling " + numInput);
              }
              public void end() {
     	  	display.setText("Call Ended");
              }
              public void redial() {
    	 	display.setText("Redialing " + numInput);
              }
     
    }

  5. #5
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    Default Re: PhoneBook Help

    Hello islandGirl,

    Most of the applications you write for your assignments will probably be GUI (graphical user interface) based so I suggest you use the NetBeans IDE. Its really handy for creating GUIs.
    Eclipse is a very powerful IDE for console use but it doesn't have a built in drag & drop GUI creator.

    To understand subclass/superclass I suggest you read through the Sun Java Tutorial on Inheritance:

    Inheritance (The Java™ Tutorials > Learning the Java Language > Interfaces and Inheritance)

    Here is a really simple example of how to pass a String value from one class to another.

    public class Test1 {
     
        public static void main(String[] args) {
     
            //Create object of Test2 class called t2
     
            Test2 t2 = new Test2("I've just passed a String to the Test2 class!");
        }
     
    }
    public class Test2 {
     
        //Test2 String Constructor
     
        public Test2(String myString){
          System.out.println(myString);
        }
     
    }
    When Test1 class is run, Test2 will print "I've just passed a String to the Test2 class!" in the console.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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    Wink Re: PhoneBook Help

    I was reading up on the inheritance today so I'm understanding it now. Thank you so much for your assistance and for providing me with your example. I'll start using NetBeans for future GUI program assignments.

    Have a great day/evening.

    Mahalo (thank you)

    islandGirl

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