Can you write a test plan table and UML diagram for the program below

import java.util.ArrayList;

class Student $\{$

private String name;

private int credits;

private int Qpoints;

private static double gpaThreshold; $//$ Static field for GPA threshold

public Student$($String name, int credits, int Qpoints$)\{$

this.name $=$ name;

this.credits $=$ credits;

this.Qpoints $=$ Qpoints;

$\}$

public double gpa$()\{$

if $($credits $==0)\{$

return $0$;

$\}$

return $($double$)$ Qpoints $/$ credits;

$\}$

public boolean eligibleForHonorSociety$()\{$

return gpa$()>=$ gpaThreshold;

$\}$

public String toString$()\{$

return "Name: $"+$ name $+",$ GPA: $"+$ gpa$()$;

$\}$

public static double getGpaThreshold$()\{$

return gpaThreshold;

$\}$

public static void setGpaThreshold$($double threshold$)\{$

gpaThreshold $=$ threshold;

$\}$

$\}$

class Undergraduate extends Student $\{$

private String year;

public Undergraduate$($String name, int credits, int Qpoints, String year$)\{$

super$($name$,$ credits, Qpoints$)$;

this.year $=$ year;

$\}$

@Override

public boolean eligibleForHonorSociety$()\{$

return super.eligibleForHonorSociety$()$ && $($year$.$equals$("$Junior$")||$ year.equals$("$Senior$"))$;

$\}$

@Override

public String toString$()\{$

return super.toString$()+",$ Year: $"+$ year;

$\}$

$\}$

class Graduate extends Student $\{$

private String degreeSought;

public Graduate$($String name, int credits, int Qpoints, String degreeSought$)\{$

super$($name$,$ credits, Qpoints$)$;

this.degreeSought $=$ degreeSought;

$\}$

@Override

public boolean eligibleForHonorSociety$()\{$

return super.eligibleForHonorSociety$()$ && degreeSought.equals$("$Masters$")$;

$\}$

@Override

public String toString$()\{$

return super.toString$()+",$ Degree Sought: $"+$ degreeSought;

$\}$

$\}$

public class Project$2\{$

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

ArrayList students $=$ new ArrayList$<>()$;

double totalGPA $=0$;

$//$ Read student information from a text file

$//$ Assuming the text file is properly formatted and named "students.txt$"$

$//$ For demonstration purposes, manually adding students

students.add$($new Undergraduate$("$Brown$,$ William", $72,230,$ "Junior"$))$;

students.add$($new Graduate$("$Johnson$,$ Mary", $21,77,$ "Masters"$))$;

students.add$($new Undergraduate$("$Jones$,$ Sally", $32,95,$ "Sophomore"$))$;

$//$ Calculate total GPA and create Student objects

for $($Student student : students$)\{$

totalGPA $+=$ student.gpa$()$;

$\}$

$//$ Calculate average GPA

double averageGPA $=$ students.isEmpty$()?0$ : totalGPA $/$ students.size$()$;

$//$ Set GPA threshold for honor society membership

Student.setGpaThreshold$(($averageGPA $+4\mathrm{.}0)/2\mathrm{.}0)$;

System.out.println$("$GPA Threshold: $"+$ Student.getGpaThreshold$())$;

$//$ Display eligible students

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

for $($Student student : students$)\{$

if $($student$.$eligibleForHonorSociety$())\{$

System.out.println$($student$)$;

$\}$

$\}$

$\}$

$\}$