You’ve probably come across the Percentage named fundamental pivotal concept in Mathematics. Well, have you ever wondered about “calculating percentage marks in the Java Program”? You will be surprised to know that Percentage is also the key element of any programming language.
If you are good with your Mathematical counterpart, but struggling to implement it using the most useful and handy programming language Java, then your search ends here! Now, you have got the most useful article about the “Java Program to calculate percentages”
In this article, we will discuss the simple Mathematical Background of Percentage along with its implementation process with an example in Java with some more advanced topics.
Now lets explore the topic further!
How To Calculate Percentage Using Java Code?
Before we move ahead with one thing, we should be clear that we will implement the above formula using the Java program. We will not use the Percent Sign in Java which is also denoted as the Modulus Operator. The Modulus Operator and Percentage Sign are two different things.
Now, let us look at the following Java Program example where the system will take the inputs from the users and provide the percentage as the answer.
Code To Get The Implementation Process Of Percentage In Java:
import java.util.Scanner; // Scanner For Taking User Inputs
public class Main
{
public static void main(String[] args) {
int div; // Integer Division Variable To Store Result
float total, obtained; // Float Data Type Variables
Scanner sc = new Scanner(System.in);
System.out.print("Enter Obtained Marks: "); // Taking Obtained Marks
obtained = sc.nextFloat(); // Inserting In The Variable
System.out.print("Enter Total Marks: "); // Enter Total Marks
total = sc.nextFloat(); // Inserting In Another Variable
div = (int)((obtained / total) * 100); // Implementing The Formula
System.out.println("Calculated Percentage: "+ div + "%"); // Printing The Answer
}
}
Steps Of The Program:
At first, the Scanner Class will be imported to take the inputs from the users.
In the Main Function, we will first declare some variables. Either they will all be under the Double Data type or Float Data Type.
Now, the Total Obtained Marks will be taken from the users & saved in some double variable.
With the same process, we will enter total marks from the users & store them in the variable.
Now, the above formula will be implemented. And the answer will be printed in the system.
Output:
From the above output, we can see that the two values have been taken into the system successfully and they are saved to the variables. And the implementation of the percentage rule has also been done great as the required answer is coming.
Understanding how to implement mathematical formulas in Java is an essential skill. However, students often face challenges when applying these concepts in their assignments.
If you’re struggling with similar Java problems in your coursework, you can always get your specific Java assignment solved from our experts to tackle complex coding tasks.
How To Add Percentages In Java?
Now, it is time to address other questions related to the Percentage Concept in Java that are a bit advanced. After getting knowledge of how to implement percentages with Java, it is time to know how to add percentages using the Java programming method.
The Mathematical Theory related to the addition of percentages says that it is a simple mathematical operation. That means, two percentages can be added to each other as two simple integer values get added.
Percentage Addition: Percentage1 + Percentage2
Method To Demonstrate The Procee To Add Two Percentages With Simple Java Code:
import java.util.Scanner; // Scanner For Taking User Inputs
public class Main
{
public static void main(String[] args) {
float result;
float a1;
float a2;
Scanner sc = new Scanner(System.in);
System.out.print("Enter First Percentage: "); // Taking First Float Percentage Value
a1 = sc.nextFloat(); // Saving The Data
System.out.print("Enter Second Percentage: "); // Taking Second Float Percentage Value
a2 = sc.nextFloat(); // Saving The Data
result = (float)(a1 + a2); // Adding Two Percentages
System.out.println("Calculated Addition Percentage: "+ result + "%"); // Printing The Answer
}
}
Steps Of The Program:
Here, we will again import Scanner Class to the program to get the user input.
Now, the Double or Float variables will be declared. Inside of that, we will write the user input.
We will first take the first percentage data into the program. And later, the second one will be taken.
Now, those two percentage data will be added to each other in a simple format.
At last, we will print the answers in double or float format after performing the addition.
Output:
From the above image, we can see that the users are first providing the percentage details to the system. The result of those percentage data after doing the addition operation is coming as the output. So, the program is executing perfectly without any errors.
How To Multiply Percentages In Java?
The multiplication of any two percentages can’t be simply done as its addition. There are some steps involved in this operation. Let us make it alive with one simple example. Here, we will try to multiply two percentages 25% and 20%. Let us look at the following steps:
Step 1: Remove the percentage sign & make it into the decimal format. This means the 25% will become 0.25 and 20% will become 0.2.
Step 2: Now, the multiplication will happen in these two decimal numbers. That means, 0.25 * 0.2 = 0.05
Step 3: Now, the multiplication result will be converted to percentage by multiplying with 100. It will become 0.05 * 100 = 5%
Method To Define The Process To Multiply Two Percentages Using Java:
import java.util.Scanner; // Scanner For Taking User Inputs
public class Main
{
public static void main(String[] args) {
float temp, result;
float a1;
float a2;
Scanner sc = new Scanner(System.in);
System.out.print("Enter First Percentage: "); // Taking First Float Percentage Data
a1 = sc.nextFloat();
System.out.print("Enter Second Percentage: "); // Taking Second Float Percentage Data
a2 = sc.nextFloat();
temp = (a1/100) * (a2/100); // Converting To Decimal & Multiply
result = (float)(temp * 100); // Making It Again Percentage
System.out.println("Result of Multiplication Percentage: "+ result + "%"); // Statement To Print Double or Float Data
}
}
Steps Of The Program:
At first, the Scanner Class will be taken in the program to make it more interactive with the users.
Now like the previous programs, the percentage values will be taken from the users.
We will first make the percentages decimal by dividing them by 100. Now, the multiplication will done in the same statement.
It is time to finalize the result, we will multiply the data by 100 to make it again a percentage.
Now, the answers will be printed in the program.
Output:
From the above screenshot, we can say that the operations that are executed in the statements of the program running completely well. After taking the input from the users, it is converted to the decimals & multiplication is done later. As the result is marked as float, it comes in the decimal format.
What Mathematical System Says To Calculate Percentage?
The percentage is the symbol of the fractional number that is derived with respect to the 100 number, however, it can be changed with the need. To express the Percentage marks, the percent sign “%” is used to calculate the percentage mainly required for Student Marks.
We can make it simple with an example. Suppose, a student has received total marks as ‘a’. And the total full marks can be denoted as the ‘b’. Then, the following equation will be used to calculate the percentage of that student.
Percentage Value Formula: (a/b) x 100
What Are Some Percentage Libraries and Tools In Java?
Now, before we end our discussion, it is very crucial to highlight some of the percentage libraries and tools that are present in the Java programming language. But, they are highly advanced and a good background knowledge should be present to handle those.
However, those libraries are needed when you will be working on some difficult statistical operations or working collaboratively with some banking sectors. For those cases, the following libraries can be utilized:
Apache Common Maths: The library is useful for working on simple mathematical concepts. As it provides a large set of math operations including the Percentage one.
Java Matrix Package (JAMA): The JAMA is mainly used for handling the Linear Algebra Mathematical Concepts. It comes with a dedicated wing for Percentage operations.
Google Core Libraries for Java (Guava): It is a library that was developed by Google to serve the Core libraries of Java. It comes with the Percentage library can be used for statistical problems.
Also, if you’re looking for other mathematical blogs related to Java Language, then you can check out our article on calculating student grades in Java.
Conclusion:
As we saw “calculating percentage marks in the Java Program” is very useful from both the Math & CS point of view.
For calculating the percentage, you should be first ready with the mathematical formula. If the Mathematical Formula is clear to you, then implementing the formula in Java or any other program becomes a breeze.
It’s a smart move to make sure you’ve got the basics down before diving into a new topic. Even though, the Java Percentage concept can be categorized as one of the simple concepts. But still, if you have any doubts about the Java Basics, clear it out first before jumping for the article.
