The document describes a lab exam question that involves defining an Author class with name, email, and gender instance variables and associated getter and setter methods, except for name and gender which cannot be set. It also includes a toString method to return a string with the author name, gender, and email. Students are tasked with writing the Author class and a TestAuthor class to test it. The second question provides code snippets to fill in blanks to produce the given output of printing a student's name and roll number.

1. LAB EXAM SET B
Q1. A class called Author is designed as shown in the class diagram. It contains:
Three private instance variables: name (String),
email (String), and gender (char of either 'm' or 'f');
(.5 marks)
One constructor to initialize the name, email and
gender with the given values;
public Author (String name, String email, char
gender) {......}(.5 marks)
public getters/setters: getName(), getEmail(),
setEmail(), and getGender();
(There are no setters for name and gender, as these
attributes cannot be changed.) (1 marks)
A toString() method that returns "author-name
(gender) at email",
e.g., "Tan Ah Teck (m) at
ahTeck@somewhere.com". (.5 marks)
Write the Author class. Also write a test program called TestAuthor to test the constructor and public
methods.(1 marks)
Q2. Fill the blanks to get given output (.5 marks for each blank)
class person
{
private String name;
person(String name)
{
___________ = name;
}
void print()
{
System.out.println("name="+name);
}
}
class student extends person
{
int rollno;
B(int rollno1,String name)
{
__________
rollno1=rollno;
}
void show()
{
___________
System.out.println("rollno="+rollno);
}
}
class xyz3
{
public static void main(String args[])
{
student s1 = newstudent(10,"ram");
s1.show();
}}
Output:
name=ram
rollno=10