Question

JAVA help

Create a class Individual, which has:

Instance variables for name and phone number of individual.

Add required constructors, accessor, mutator, toString() , and equals method.

Use array to implement a simple phone book , by making an array of objects that stores the name and corresponding phone number.

The program should allow searching in phone book for a record based on name, and displaying the record if the record is found.

An appropriate message should be displayed if the record is not found.

.

.

Individual.java

import java.util.Scanner;

public class Individual
{
   private String name;
   private String phonenum;

   public Individual()
   {
       name=" ";
       phonenum=" ";
   }
   public Individual(String n1, String p1)
   {
       this.name=n1;
       this.phonenum=p1;
   }
   public void setName(String n1)
   {
       this.name=n1;
   }
   public void setNumber(String p1)
   {
       this.phonenum=p1;
   }
   public String getName()
   {
       return name;
   }
   public String getNumber()
   {
       return phonenum;
   }
   public String toString()
   {
       return "Name: "+name+"\nPhone Number: "+phonenum;
   }

}

Phonebook.java

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

public class Phonebook
{
private List info;

public Phonebook()
{
info = new ArrayList();
}
public Individual findName(String s)
{
for (Individual c : info)
{
if (c.getName().equalsIgnoreCase(s))
{
return c;
}
}
return null;
}
}

Demo.java

import java.util.Scanner;

public class Demo
{
   public static void main(String[] args)
   {
       Scanner input = new Scanner(System.in);

       Phonebook contact1 = new Phonebook();
       contact1.setName("Alfred");
       contact1.setNumber("768-217-3945");

       String choice = "";

       while (!choice.equalsIgnoreCase("n"))
       {
           System.out.println("Would you like to search for a contact from the phone book?\nIf you would like to type y/Y or n/N to exit.");
           System.out.println("");

           choice = input.nextLine();

           if (choice.equalsIgnoreCase("y"))
           {
               System.out.print("Enter the name: ");
               String search = input.nextLine();

               Individual result = contact1.findName(search);
               if (result != null)
                   {
                       System.out.println("The name was found.");
                       System.out.println(result);
                   }
               else
                   {
                       System.out.println("Not found!");
                   }
           }
       }
   }
}

Errors:

inclass6_2.java:18: error: '(' expected
public void String setName(String n1)
^
inclass6_2.java:22: error: '(' expected
public void String setphonenum(String p1)
^
inclass6_2.java:30: error: '(' expected
public void String getphonenum()
^
3 errors

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
_________________

// Individual.java

import java.util.Scanner;

public class Individual
{
   //Declaring instance variables
private String name;
private String phonenum;

//Zero argumented constructor
public Individual()
{
name=" ";
phonenum=" ";
}
//Parameterized constructor
public Individual(String n1, String p1)
{
this.name=n1;
this.phonenum=p1;
}

// getters and setters
public void setName(String n1)
{
this.name=n1;
}
public void setNumber(String p1)
{
this.phonenum=p1;
}
public String getName()
{
return name;
}
public String getNumber()
{
return phonenum;
}

//toString method is used to display the contents of an object inside it
public String toString()
{
return "Name: "+name+"\nPhone Number: "+phonenum;
}

}

___________________________

// Phonebook.java

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

public class Phonebook {
   private List<Individual> info=null;

   public Phonebook() {
       info = new ArrayList<Individual>();
   }

   public int addContact(Individual contact)
   {
       Individual in=findName(contact.getName());
       if(in==null)
       {
           info.add(contact);
          
           return 1;
       }
       return -1;
   }
   public Individual findName(String s) {
       for (Individual c : info) {
           if (c.getName().equalsIgnoreCase(s)) {
               return c;
           }
       }
       return null;
   }
}

_______________________________

// Demo.java

import java.util.Scanner;

public class Demo
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);

Phonebook book = new Phonebook();
Individual in1=new Individual();
in1.setName("Alfred");
in1.setNumber("768-217-3945");
book.addContact(in1);

Individual in2=new Individual("Williams","343-233-3443");
book.addContact(in2);
  

String choice = "";

while (!choice.equalsIgnoreCase("n"))
{
System.out.println("Would you like to search for a contact from the phone book?\nIf you would like to type y/Y or n/N to exit.");
System.out.println("");

choice = input.nextLine();

if (choice.equalsIgnoreCase("y"))
{
System.out.print("Enter the name: ");
String search = input.nextLine();

Individual result = book.findName(search);
if (result != null)
{
System.out.println("The name was found.");
System.out.println(result);
}
else
{
System.out.println("Not found!");
}
}
}
}
}

____________________________

Output:

Would you like to search for a contact from the phone book?
If you would like to type y/Y or n/N to exit.

y
Enter the name: Williams
The name was found.
Name: Williams
Phone Number: 343-233-3443
Would you like to search for a contact from the phone book?
If you would like to type y/Y or n/N to exit.

y
Enter the name: James
Not found!
Would you like to search for a contact from the phone book?
If you would like to type y/Y or n/N to exit.

n

_______________Could you plz rate me well.Thank You