Question

1. Create a Project and a Class called “FinalGrade”

Write a Java program to compute your final grade for the course.

Assume the following (you can hard-code these values in your program).

Assignments are worth 30%

Labs are worth 40%

Mid-term is worth 15%

Final is worth 15%

Ask for the grades in each category. Store them in a double variable.
Print out the final percentage grade.

          For example,

Final Grade Calculation

Enter percentage grades in the following order.

Assignments, Labs, Mid-term test, Final Exam: 95 88 86 92

The final grade is 90

2. Create a Project and a Class called “AgeCheck”

Write a Java program to ask the user for their name and age. Use a string variable for the name and an int variable for the age. Output a message using the name and whether the user is old enough to purchase alcohol (21 years old).

For example,

Age Checker
Enter your name: Steve
Enter your age: 19
Hello, Steve, you are only 19 and not old enough to purchase alcohol.

Age Checker
Enter your name: Jane
Enter your age: 25
Hello, Jane, you are 25 and old enough to purchase alcohol.

Answer 1

Program 1:

import java.util.Scanner;           //scanner class importing

public class FinalGrade  

{

public static void main(String args[])           //main function

   {

   double assignments,labs,mid,final_exam;       //variables for storing grades which are double data type

   Scanner input=new Scanner(System.in);                   //creating scanner class input object
  
   System.out.println("Enter Percentage Grade of Assignments");
  
   assignments=input.nextDouble();                       //asking user to enter assignment grades
  
   System.out.println("Enter Percentage Grade of Labs");
  
   labs=input.nextDouble();                   //askin user to enter labs grades
  
   System.out.println("Enter Percentage Grade of Mid-term Test");
  
   mid=input.nextDouble();           //asking user to enter mid term test grades
  
   System.out.println("Enter Percentage Grade of Final Exam");
  
   final_exam=input.nextDouble();       //asking user to enter final_Exam grades
  
   double final_grade=(0.3*assignments)+(0.4*labs)+(0.15*mid)+(0.15*final_exam);
  
   //finally computing final grade by multiplying each grade with their worth % here 30% can be written as 30/100 i.e 0.3
  
   System.out.println("The Final Grade is " + (int)(final_grade)); //at the end printing the final grade by casting it to int
  
   }
}

Program 2:

import java.util.Scanner;           //scanner class importing

public class AgeChecker

{

   public static void main(String args[])           //main function

       {

           Scanner input=new Scanner(System.in);       //scanner class input object creation

           System.out.println("Age Checker");

           String name;                   //name variable which is string data type

           int age;                   //age variable which is int data type

           System.out.print("Enter Your Name : ");

           name=input.nextLine();               //asking user to enter the name

           System.out.print("Enter Your Name : ");

           age=input.nextInt();           //asking user to enter the age

           if (age>=21)           //if age greater than or equal to 21 print below message

               System.out.println("Hello, "+name+", you are "+ age +" and old enough to purchase alcohol.\n");

           else //else print not old enough to purchase alcohol

               System.out.println("Hello, "+name+", you are only "+ age +" and not old enough to purchase alcohol.\n");
       }
}

Program 1 Code and Output Screenshots:

Program 2 Code and Output Screenshots :

Note : if you have any queries please post a comment thanks a lot..always available to help you...