// You are provided with the Student class, which consists of two private variab

Question

 // You are provided with the Student class, which consists of two private variables- name, age. It also contains a constructor, and two methods i.e. toString // which will return the String representation of the Student object, and setAge which will set the Students age.  //Import the Scanner class. //-->  //Write the class header for the file Lab7 and the main method header. public class Lab7{          public static void main(String[] args){          //Instantiate an object of the Student class, called stInstance. Set the name and age as your own name and age. Use the constructor to do so.         ??? ??? = new ???(???,???);          // Print the Student details by calling the toString method.         //-->          // Instantiate an object of the Scanner class.         //-->          System.out.print("Please enter the student's new age: ");          // Input the Students age from the user into a variable called newAge.         //->          // Use the setAge method, to set the age of stInstance to the age you just read in from the user.         ???.setAge(???);          // Display the Student details again, and note how the age has been changed.         //-->          // Change the header for the Student class to private instead of public. Try to compile and run the program and note what happens.         //--> ****** This is an experiment (dont include it in your submission) *******          // Print Fibonacci Series i.e 1, 1, 2, 3, 5, 8, 13, 21, ...         // The formula is currVal= prevVal + prevPrevVal         // Define 3 integer variables currVal, prevVal and prevPrevVal. Initialize prevVal and prevPrevVal variables to 1         // and initialize currVal to 2         //-->          System.out.print("Fibonacci Series between 1 and 100: ");          // Print out prevVal         //-->          // Print out prevPrevVal         //-->          // Write a do-while loop to print out Fibonacci numbers less than or equals 100         ???{                  // Print out the <currVal>                 //-->                  // Assign <prevVal> to <prevPrevVal>                 //-->                  // Assign <currVal> to <prevVal>                 //-->                  // Calculate <currVal> using the formula given earlier                 //-->          } // Check the while condition if <currVal> is less than or equals 100         ???(???)           } } 

Explanation / Answer

//Import the Scanner class.

import java.util.Scanner;

//Write the class header for the file Lab7 and the main method header.

public class Lab7{

     public static void main(String[] args){

     //Instantiate an object of the Student class, called stInstance. Set the name and age as your own name and age. Use the constructor to do so.

     Student stInstance = new Student("Avinash",22);          //IMPORTANT - change it to your own data

     // Print the Student details by calling the toString method.

     System.out.println(stInstance);            //IMPORTANT - calling a print function for an instance of a class automatically calls the toString() method for that instance

     // Instantiate an object of the Scanner class.

     Scanner scanData = new Scanner(System.in);

     System.out.print("Please enter the student's new age: ");

     // Input the Students age from the user into a variable called newAge.

     int newAge = scanData.nextInt();

     // Use the setAge method, to set the age of stInstance to the age you just read in from the user.

     stInstance.setAge(newAge);

     // Display the Student details again, and note how the age has been changed.

     System.out.println(stInstance);

     // Print Fibonacci Series i.e 1, 1, 2, 3, 5, 8, 13, 21, ...

     // The formula is currVal= prevVal + prevPrevVal

     // Define 3 integer variables currVal, prevVal and prevPrevVal. Initialize prevVal and prevPrevVal variables to 1

     // and initialize currVal to 2

     int currVal , prevVal, prevPrevVal;

     prevVal = prevPrevVal = 1;

     currVal = 2;

     System.out.print("Fibonacci Series between 1 and 100: ");

     // Print out prevVal

     System.out.print(prevVal + ", ");

     // Print out prevPrevVal

     System.out.print(prevPrevVal + ", ");

     // Write a do-while loop to print out Fibonacci numbers less than or equals 100

     do{

       // Print out the <currVal>

       System.out.print(currVal + ", ");

       // Assign <prevVal> to <prevPrevVal>

       prevPrevVal = prevVal;

       // Assign <currVal> to <prevVal>

        prevVal = currVal;

         // Calculate <currVal> using the formula given earlier

         currVal = prevVal + prevPrevVal;

     } // Check the while condition if <currVal> is less than or equals 100

     while(currVal<=100);

     }

}

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