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Java program to calculate the average of marks. Here we cover five simple ways to find out the average of marks in Java programming. If you know the basics of coding, you can even write more than 5+ ways. However, as a newbie, we share the program in 5 different ways. Do check it out. Our database consists of more than 100+ sample Java programs. The following program is written in five simple ways: standard values, class, by using method, by using command line arguments.
Table Of Contents:
So, How to calculate the average of marks in math?
A: That’s quite simple, for example, consider you have just completed your sem exams, and the result announced as:
- Maths – 75
- Science – 55
- Operating Systems – 80
- Dataware house – 75
- Now, sum up all – 285/4 = 71.25 ( Your average marks )
So, your average of entire subjects are = 71.25 ( Formula stated below)
That’s a standard and the only way to calculate your average of marks. Now, check out the following programs.
Average Marks Java Program Five Simple Ways
Example Code -1: ( using standard values )
- Basic version with standard values. Here we took Int n=5; it’s all up to you. And also check output screen.
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class AverageMarks { public static void main(String arg[]) { int n=5,avg=0; int a[]=new int[n]; a[0]=10; a[1]=20; a[2]=30; a[3]=40; a[4]=50; for(int i=0;i<n;i++) avg=avg+a[i]; System.out.println("average of ("+a[0]+","+a[1]+","+a[2]+","+a[3]+","+a[4]+") is ="+ avg/n); } } |
- OutPut :
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average of (10,20,30,40,50) is =30 |
Java Program Calculate Average Marks Using Arrays
- Java code for obtaining an average of marks taking inputs through Scanner class. Here it is: #Inputs Through Scanner Class#
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import java.util.Scanner; class AverageMarks { public static void main(String args[]) { int i; System.out.println("Enter number of subjects"); Scanner sc=new Scanner(System.in); int n=sc.nextInt(); int[] a=new int[n]; double avg=0; System.out.println("Enter marks"); for( i=0;i<n;i++) { a[i]=sc.nextInt(); } for( i=0;i<n;i++) { avg=avg+a[i]; } System.out.print("Average of ("); for(i=0;i<n-1;i++) { System.out.print(a[i]+","); } System.out.println(a[i]+") ="+avg/n); } } |
- Output:
For example purpose, we have executed the above program with three different outputs as given below. You need to enter the total number of subjects that you need to calculate or find and followed by marks. The console will display the output as follows:
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output:1 Enter number of subjects 6 Enter marks 100 90 80 70 60 50 Average marks of (100,90,80,70,60,50) =75.0 output: 2 Enter number of subjects 6 Enter marks 75 87 79 89 77 60 Average marks of (75,87,79,89,77,60) =77.83333333333333 output:3 Enter number of subjects 5 Enter marks 50 50 50 50 51 Average marks of (50,50,50,50,51) =50.2 |
Average Marks Using Command Line Arguments
- Here we are using command line arguments if you have no idea about command line arguments in java then check out that link. As like above, the inputs are taken through scanner class, whereas here inputs are taking through command line arguments.
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class AverageMarks { public static void main(String args[]) { int i; int n=args.length; double avg=0; for( i=0;i<n;i++) { avg=avg+Integer.parseInt(args[i]); } System.out.print("Average marks of ("); for(i=0;i<n-1;i++) { System.out.print(args[i]+","); } System.out.println(args[i]+") ="+avg/n); } } |
- Output :
This is how the actual output screen will look alike, c:\users\goutham\desktop ( Don’t consider this, because we are executed the above code on our system, so we copied the output here ). Output console may vary code to code.
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output:1 C:\Users\goutham\Desktop\E>javac AverageMarks.java C:\Users\goutham\Desktop\E>java AverageMarks 2 100 50 Average marks of (2,100,50) =50.666666666666664 output:2 C:\Users\goutham\Desktop\E>javac AverageMarks.java C:\Users\goutham\Desktop\E>java AverageMarks 100 90 80 70 60 50 Average marks of (100,90,80,70,60,50) =75.0 |
Java Program Average Marks Using Class
- Java program for calculating an average of marks through creating a separate class(AverageCalculation) and taking inputs through scanner class. Check out the code.
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import java.util.Scanner; class AverageCalculation { double avg=0; AverageCalculation(int a[]) { for(int i=0;i<a.length;i++) { avg=avg+a[i]; } } } class AverageMarks { public static void main(String args[]) { int i; System.out.println("Enter number of subjects"); Scanner sc=new Scanner(System.in); int n=sc.nextInt(); int[] a=new int[n]; System.out.println("Enter marks"); for( i=0;i<n;i++) { a[i]=sc.nextInt(); } AverageCalculation c=new AverageCalculation(a); System.out.print("Average of ("); for(i=0;i<n-1;i++) { System.out.print(a[i]+","); } System.out.println(a[i]+") ="+c.avg/n); } } |
- Output: ( 2 Sample outputs )
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Output:1 Enter number of subjects 5 Enter marks 50 50 65 45 14 Average of (50,50,65,45,14) =44.8 Output:2 Enter number of subjects 6 Enter marks 89 99 78 87 45 65 Average of (89,99,78,87,45,65) =77.16666666666667 |
Using Method
- Java code for calculating the average of marks using a user-defined method
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import java.util.Scanner; class AverageMarks { public static void main(String args[]) { int i; System.out.println("Enter number of subjects"); Scanner sc=new Scanner(System.in); int n=sc.nextInt(); int[] a=new int[n]; System.out.println("Enter marks"); for( i=0;i<n;i++) { a[i]=sc.nextInt(); } double avg=averageCalculation(a); System.out.print("Average of ("); for(i=0;i<n-1;i++) { System.out.print(a[i]+","); } System.out.println(a[i]+") ="+avg/n); } static double averageCalculation(int a[]) { double sum=0; for(int i=0;i<a.length;i++) { sum= sum+a[i]; } return sum; } } |
- Output:
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output:1 Enter number of subjects 6 Enter marks 100 90 80 70 60 51 Average of (100,90,80,70,60,51) =75.16666666666667 output:2 Enter number of subjects 6 Enter marks 78 87 45 65 42 50 Average of (78,87,45,65,42,50) =61.166666666666664 |
