Question

/*---------------------------------------------------------------------------
// AUTHOR:
// SPECIFICATION: This program is for practicing the use of classes, constructors,
// helper methods, and the this operator.
// INSTRUCTIONS: Read the following code skeleton and add your own code
// according to the comments
//-------------------------------------------------------------------------*/

import java.util.Scanner;

public class
{
public static void main(String[] args)
{
// Let's make two students using all two constructors
// Write code to create a new student alice using constructor #1
//-->
Student alice =

// Write code to create a new student bob with name "Bob Brown",
// age 23 and GPA 3.8 using constructor #2
//-->

// Let's get user input to change the missing or default values
Scanner scan = new Scanner(System.in);

// Get user input and set Alice's full name
System.out.print("Enter full name for Alice: ");
alice.setName(scan.nextLine());

// Get user input and set Alice's age

// Write code to get user input and set Alice's GPA
//-->

// Lets print out the students details
alice
bob

System.out.println("\r\nChanging Bob's GPA");

// Get user input and change bob's gpa

// Write code to print out bob's new details
//-->

System.out.println("\r\nComparing Alice and Bob");

Student better = alice.betterGPA(bob);
System.out.println(better.getName() + " has a better GPA");

// Use the olderStudent method to figure out which student is
// older between Alice and Bob. Then print out the result. Follow
// the betterGPA example above.
//-->

// Finally, print out each student's details 3 times, using the print(int n) method
//-->

}
}

Answer 1

Source code

import java.util.Scanner;
class student
{
String Name;
int Age;
double GPA;
student(String name)
{
Name=name;
}
student(String name,int age, double gpa)
{
Name=name;
Age=age;
GPA=gpa;
}
void setName(String name)
{
Name=name;
}
void setAge(int age)
{
Age=age;
}
void setGPA(Double gpa)
{
GPA=gpa;
}
student betterGPA(student s)
{

if(s.GPA>this.GPA)
return s;
else
return this;
}
student olderStudent(student s)
{

if(s.Age>this.Age)
return s;
else
return this;
}
String getName()
{
return this.Name;
}
void print(int n)
{
for(int i=0;i<n;i++)
{
System.out.println("Name : "+this.Name +"\nAge : "+this.Age+"\nGPA ="+this.GPA+"\n");
}

}
public static void main(String[] args)
{
student alice =new student("Alice");
student bob = new student("Bob Brown",23,3.8);
Scanner scan=new Scanner(System.in);
System.out.println("Enter full name for Alice: ");
alice.setName(scan.nextLine());
System.out.println("Enter age for Alice: ");
alice.setAge(scan.nextInt());
System.out.println("Enter GPA for Alice: ");
alice.setGPA(scan.nextDouble());
System.out.println("*****Alice Details*****\nName : "+alice.Name +"\nAge : "+alice.Age+"\nGPA ="+alice.GPA);
System.out.println("\n*****Bob Details*****\nName : "+bob.Name +"\nAge : "+bob.Age+"\nGPA ="+bob.GPA);
System.out.println("\nChanging Bob's GPA :");
bob.GPA=scan.nextDouble();
System.out.println("\n*****Bob Details*****\nName : "+bob.Name +"\nAge : "+bob.Age+"\nGPA ="+bob.GPA);
System.out.println("\r\nComparing Alice and Bob");
student better = alice.betterGPA(bob);
System.out.println(better.getName() + " has a better GPA");
student older = alice.olderStudent(bob);
System.out.println(older.getName() + " is older student");
System.out.println("\n********Alice details*************");
alice.print(3);
System.out.println("\n********Bob details*************");
bob.print(3);
}
}

Sample output

*******************END***********PLS GIVE ME UPVOTE*************