Given code:

$//$Main$.$java

import java.io$.*$;

public class Main$\_$i $\{$

public static void main$($String args$[])$ throws FileNotFoundException $\{$

ClassList c $=$ new ClassList$("$data$.$txt$")$;

c$.$listStudents$()$;

c$.$listPairs$()$;

c$.$greeting$()$;

$\}$

$\}$

$//$Pair$.$java

public class Pair $\{$

private Student s$1$;

private Student s$2$;

$//$ DO NOT add any extra object fields

$\}$

$//$Student$.$java

public class Student $\{$

private String name;

$//$ DO NOT add any extra object fields

$\}$

$//$ClassList$.$java

import java.io$.*$;

import java.util.$*$;

public class ClassList $\{$

private Student$[]$ sList;

private Pair$[]$ pList;

$//$ DO NOT add any extra object fields

public ClassList$($String fpn$)$ throws FileNotFoundException $\{$

Scanner in $=$ new Scanner$($new File$($fpn$))$;

$\}$

public void listStudents$()\{$

System.out.println$("$Students: $")$;

$\}$

public void listPairs$()\{$

System.out.println$("$Pairs: $")$;

$\}$

public void greeting$()\{$

System.out.println$("$Greeting messages: $")$;

$\}$

$\}$

$//$Input file: data.txt

Ada

Bob

Candy

Dove

Emily

Frank

Gigi

Henry

Ivy

Joy

$104$

$31$

$28$

$79$

$65$

$//$Sample output

Students:

$[1]$ Ada

$[2]$ Bob

$[3]$ Candy

$[4]$ Dove

$[5]$ Emily

$[6]$ Frank

$[7]$ Gigi

$[8]$ Henry

$[9]$ Ivy

$[10]$ Joy

Pairs:

Pair $1$: Joy Dove

Pair $2$: Candy Ada

Pair $3$: Bob Henry

Pair $4$: Gigi Ivy

Pair $5$: Frank Emily

Greeting messages:

Hi Candy, nice to meet you. I am Ada.

Hi Henry, nice to meet you. I am Bob.

Hi Ada, nice to meet you. I am Candy.

Hi Joy, nice to meet you. I am Dove.

Hi Frank, nice to meet you. I am Emily.

Hi Emily, nice to meet you. I am Frank.

Hi Ivy, nice to meet you. I am Gigi.

Hi Bob, nice to meet you. I am Henry.

Hi Gigi, nice to meet you. I am Ivy.

Hi Dove, nice to meet you. I am Joy.

Plz finish the JAVA code, thanks