HOW TO MAKE CHANGES TO JAVA Assignment 1B :- (Classes given below= AddressBook.java, ConsolUI.java, Database.java, GUI.java, Main.java, Person.java, UI.java)

Youll need to change the Main classs main() method to work with EITHER the console or a window. Users start the program giving a parameter (at the console prompt) of either console or gui (case doesnt matter). If neither is provided the program ends. The prompt is caught in the main() parameter args. The condition statement is provided for you, you only need to enter the code for either case (hint: this is 2 lines of code, 1 for each case).

///////AddressBook.java////

public class AddressBook { private final Database database; private final UI ui;

public AddressBook(final UI u) { ui = u; database = new Database(); }

public void addPerson() { }

public void deletePerson() { }

public void findPerson() { }

private boolean remove(final String name) { return (database.removeByName(name) != null); }

private Person search(final String name) { return (database.findByName(name)); }

public void displayAll() { }

private void display(final Person person) { }

}

///////////////ConsoleUI.java

import java.util.Scanner; /** * @author tanus * */ public class ConsoleUI { private final Scanner input; private AddressBook addressBook;

public ConsoleUI() { input = new Scanner(System.in); }

}

///////////////////Database.java

import java.util.ArrayList; import java.util.List;

/** * @author tanus * */ public class Database { private List storage; public Database() { storage = new ArrayList(); } public int add(final Person person) { storage.add(person); return (storage.size() - 1); } public Person[] getAll() { final Person[] copy;

copy = new Person[storage.size()]; storage.toArray(copy); return (copy); } public Person removeByName(final String name) { final Person person; final int index; index = lookupByName(name); if(index > -1) { person = storage.remove(index); } else { person = null; } return (person); } public Person findByName(final String name) { final Person person; final int index; index = lookupByName(name); if(index > -1) { person = storage.get(index); } else { person = null; } return (person); } private int lookupByName(final String name) { int location; int i; location = -1; i = 0; for(final Person person : storage) { if(person.getName().equals(name)) { location = i; break; } i++; } return (location); }

}

////////////Main.java///////////needs to be changed

import java.util.Scanner;

public class Main { public static void main(String[] args) { final UI ui; final AddressBook book; ui = new ConsoleUI(); book = new AddressBook(ui); ui.run(book); } }

///////////////////Person.java

/** * */

/** * @author tanus * */ public class Person { private final String name; private final String phone; public Person(final String nm, final String ph) { name = nm; phone = ph; } public String getName() { return (name); } public String getPhoneNumber() { return (phone); }

}

/////////////UI Interface.java

public interface UI { void display(Person person);

void displayAll(Person[] people);

String readName();

Person readPerson();

void run(AddressBook book);

void displayMsg(String msg);

void displayErrorMsg(String msg); }

///////////////////////////////////////////////GUI.class

import javax.swing.*; import java.awt.event.*; import java.awt.Graphics; import java.awt.Color; import java.awt.Container; import java.awt.Dialog; import java.awt.BorderLayout; import java.awt.*;

public class GUI extends JFrame implements UI { private AddressBook addressBook;//interface to database private int choice;//users choice 1-5

/** * Purpose: construct the GUI and add a keyboard listener to capture * the users choices from the menu */ public GUI(){ setSize(400, 400);//fix window size setVisible(true);//make window visible addKeyListener(new KeyBoardInput());//listen to keyboard input }

/** * Purpose: displays the people records passed in * @param people Person[] - records of people (from address book) */ public void display(Person ... people){ String msg = ""; //create a string of all the enteries in the address book //no formating of the data - chose to keep it simple for (Person p:people){ msg+=p.getName()+" "; msg+=p.getPhoneNumber()+" "; } JOptionPane.showMessageDialog(this,msg,"Address book enteries",JOptionPane.PLAIN_MESSAGE); }

/** * Purpose: reads the persons name using a dialog box * @return String - name read in */ public String readName(){

final String name = JOptionPane.showInputDialog("Enter the persons name");

return (name);

}

/** * Purpose: reads in the Person data (name/phone) using two dialog boxes * creates a Person object with the data * @return Person - person data record */ public Person readPerson(){ final Person person; final String name; final String phone; name = readName();//since we have a method to read the name already phone = JOptionPane.showInputDialog("Enter the persons phone number"); if (name == null || phone == null)//make sure we have data to create a person return null; person = new Person(name, phone);

return (person);

}

/** * Purpose: Assigns the AddressBook to use so GUI can communicate with it. * Note that since a GUI is event driven unlike the Console this method * has limited use here. * @param book AddressBook - interface to the database of Person records */ public void run(AddressBook book){ addressBook = book; }

/** * Purpose: When the user makes their selection the Keyboard listener stores * the selection value in data member "choice" and then calls this method. * Based on the users choice we call the appropriate method on the * addressBook. */ private void evaluateChoice(){

switch(choice) { case 1: addressBook.addPerson(); break; case 2: addressBook.deletePerson(); break; case 3: addressBook.findPerson(); break; case 4: addressBook.displayAll(); break; case 5: System.exit(0); break;

default: //should not get here }

}

/** * Purpose: Clears and draws the main menu on the window * @param g Graphics - device context to allow drawing on this window */ private void displayMenu(Graphics g){ Color c = this.getBackground();//colour to clear screen with g.setColor(c);//use that colour //colour in a rectangle the size of the window with that colour g.fillRect(0,0,this.getWidth(), this.getHeight()); g.setColor(Color.black);//set colour to draw with now to black g.drawString("1) Add",100,100); g.drawString("2) Delete",100,120); g.drawString("3) Search",100,140); g.drawString("4) Display All",100,160); g.drawString("5) Exit",100,180); }

/** * Purpose: when window requires repainting display the menu * @param g Graphics - device context for the window to draw on */ public void paint(Graphics g){ displayMenu(g); }

/** * Purpose: displays a message on the title bar of the window * @param msg String - non-error message to display */ public void displayMsg(String msg){ setTitle(msg); }

/** * Purpose: displays an error message in a dialog box * @param msg String - error msg to display */ public void displayErrorMsg(String msg){ JOptionPane.showMessageDialog(this, msg, "Error", JOptionPane.ERROR_MESSAGE); }

/** * KeyBoardInput class * * Purpose: Private (no one else needs access to this class) inner class * (this class needs access to the GUI to handle user selections) that * listens for keys pressed * */ private class KeyBoardInput extends KeyAdapter{

/** * Purpose: When a key is pressed on the keyboard this method is called * @param e KeyEvent - key pressed and other information */ public void keyTyped(KeyEvent e){ //set the "choice" data member of the outer class GUI //to get the integer value, get the character value of the key //pressed, make it a string and ask the Integer class to parse it try{ choice = Integer.parseInt("" + e.getKeyChar()); //if it wasn't an integer key pressed then make an invalid choice }catch(Exception except){ choice = -1;//this will result in nothing happening } evaluateChoice(); //GUI method to call the addressBook to perform task } } }