a$.$ Discuss the visibility properties of every instance field defined in Student class,

following the below format:

Q$4$a Answer

Instance field:

Method or methods where the field is published:

Is the field safely published?

Possible visibility problems for this field:

public class Student $\{$

public String id;

private String name;

private volatile boolean active;

private ArrayList exams;

public Student$($String id$,$ String name$)\{$

this.id $=$ id;

this.name $=$ name;

this.active $=$ false;

this.exams $=$ new ArrayList$()$;

$\}$

public synchronized String getName$()\{$

return this.name;

$\}$

public synchronized void register$($Module module$)\{$

module.addStudent$($this$.$id$)$;

this.active $=$ true;

$\}$

public synchronized void addExam$($Exam exam$)\{$

this.exams.add$($exam$)$;

$\}$

public synchronized ArrayList getTranscript$()\{$

return new ArrayList$($this$.$exams$)$;

$\}$

public void printTranscript$()\{$

if $(!$ this.active$)\{$

System.out.println$("($currently inactive$)")$;

$\}$

synchronized$($this$)\{$

System.out.println$("$Student $"+$ this.name$)$;

for $($Exam e: this.exams$)\{$

System.out.println$($e$.$toString$())$;

$\}$

$\}$

$\}$

$\}$