Need SOON PLEASE and without having to ADD sections after, ENTIRE code please! T

Question

Need SOON PLEASE and without having to ADD sections after, ENTIRE code please! Thank you!

In JAVA; Write an application that will have; using the data structure of your choice, at least 5 Contact objects. These are the follwing requirements:

1. A promt for the sort by options ( with 0 being an exit)

2. 1 = Sort by last name.

    2 = Sort by Home State.

    3 = Sort by Age

3. Reconize an invalid entry i.e. 4 = Invalid entry.

· 1 =sor 1 = Sort by last name · 2 = Sort by Home State ·3 = Sort by Age Sort by lastname 1] Sort by home state [2] Sort by age Enter option or 0 to end imput: 1 ontact [firstname-Adam, lastname-Ant, homestate-MI, age-14] Contact [firstname-Bill, lastname-Barnes, homestate-0H, age-62] Contact [firstname=Jane, lastname-Doe , homestate-CA, age-41] Contact [firstname-Joe, lastname-Jones, homestate-IL, age-35] Contact [firstname-Ida, lastname-Know, homestate-FL, age-23]

Explanation / Answer

Please find the required classes:

public class Contact {
   String lastName;
   String firstName;
   String homeState;
   int age;

   public Contact(String lastName, String firstName, String homeState, int age) {
       this.lastName = lastName;
       this.firstName = firstName;
       this.homeState = homeState;
       this.age = age;
   }

   public String getLastName() {
       return lastName;
   }

   public void setLastName(String lastName) {
       this.lastName = lastName;
   }

   public String getFirstName() {
       return firstName;
   }

   public void setFirstName(String firstName) {
       this.firstName = firstName;
   }

   public String getHomeState() {
       return homeState;
   }

   public void setHomeState(String homeState) {
       this.homeState = homeState;
   }

   public int getAge() {
       return age;
   }

   public void setAge(int age) {
       this.age = age;
   }

   @Override
   public String toString() {
       return "[First name:" + firstName + ", Last Name:" + lastName
               + ", age:" + age + ", home state:" + homeState;
   }

}

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

import java.util.Comparator;

public class AgeComparator implements Comparator<Contact> {
   @Override
   public int compare(Contact s1, Contact s2) {
       if (s1.age == s2.age)
           return 0;
       else if (s1.age > s2.age)
           return 1;
       else
           return -1;
   }
}

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

import java.util.Comparator;

public class NameComparator implements Comparator<Contact> {
   @Override
   public int compare(Contact o1, Contact o2) {
       Contact s1 = (Contact) o1;
       Contact s2 = (Contact) o2;
       return s1.firstName.compareTo(s2.firstName);
   }
}

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

import java.util.Comparator;

public class StateComparator implements Comparator<Contact> {
   @Override
   public int compare(Contact o1, Contact o2) {
       Contact s1 = (Contact) o1;
       Contact s2 = (Contact) o2;
       return s1.homeState.compareTo(s2.homeState);
   }
}

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

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

public class TestComparator {
   public static void main(String[] args) {
       List<Contact> contactList = new ArrayList<Contact>();
       Contact rag = new Contact("k", "raghu", "IN", 25);
       Contact rams = new Contact("s", "rams", "JB", 24);
       Contact sra = new Contact("g", "sravan", "LM", 21);
       Contact ran = new Contact("m", "ranjit", "KD", 30);
       contactList.add(rag);
       contactList.add(rams);
       contactList.add(sra);
       contactList.add(ran);
       System.out.println("Input List");
       System.out.println(contactList);
       System.out.println("Sort by last name:[1]");
       System.out.println("Sort by Home State:[2]");
       System.out.println("Sort by Age:[3]");
       System.out.println("Enter Input:");
       Scanner input = new Scanner(System.in);
       int i = input.nextInt();
       switch (i) {
       case 1:
           System.out.println("Sort by Last name:");
           Collections.sort(contactList, new NameComparator());
           break;
       case 2:
           System.out.println("Sort by Home state");
           Collections.sort(contactList, new StateComparator());
           break;
       case 3:
           System.out.println("Sort by Age");
           Collections.sort(contactList, new AgeComparator());
           break;
       default:
           System.out.println("Invalid Input");
       }
       System.out.println(contactList);
       input.close();
   }
}

Sample output:

Input List
[[First name:raghu, Last Name:k, age:25, home state:IN, [First name:rams, Last Name:s, age:24, home state:JB, [First name:sravan, Last Name:g, age:21, home state:LM, [First name:ranjit, Last Name:m, age:30, home state:KD]

Sort by last name:[1]
Sort by Home State:[2]
Sort by Age:[3]
Enter Input:
3
Sort by Age
[[First name:sravan, Last Name:g, age:21, home state:LM, [First name:rams, Last Name:s, age:24, home state:JB, [First name:raghu, Last Name:k, age:25, home state:IN, [First name:ranjit, Last Name:m, age:30, home state:KD]

Input List
[[First name:raghu, Last Name:k, age:25, home state:IN, [First name:rams, Last Name:s, age:24, home state:JB, [First name:sravan, Last Name:g, age:21, home state:LM, [First name:ranjit, Last Name:m, age:30, home state:KD]

Sort by last name:[1]
Sort by Home State:[2]
Sort by Age:[3]
Enter Input:
3
Sort by Age
[[First name:sravan, Last Name:g, age:21, home state:LM, [First name:rams, Last Name:s, age:24, home state:JB, [First name:raghu, Last Name:k, age:25, home state:IN, [First name:ranjit, Last Name:m, age:30, home state:KD]

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