Arguments and Parameters In Java

Good day, readers. We will talk about arguments and parameters in java in today’s topic. Before writing a Java program, it is essential to understand these fundamental ideas. Before these, we also covered decision-making, loop control, and Java methods in case you missed them. Now, hurry up! Other Java-related topics, including Difference between C++ & Java, Operators in Java, Data Types in Java, and many others, have also been briefly discussed in the past. This information will be very helpful to your understanding. So let’s get to the point without further hesitation:

Arguments and Parameters In Java

The terms argument and parameter are commonly misunderstood by beginner programmers. They mix the two together, even though they are two distinct terms. Let’s begin with some of the key distinctions between java arguments and parameters.

Arguments:

When a function is called in Java, a value is passed to the function as an argument. When a function is called while the program is running, some values are passed to the function. Arguments are what we call these values. And when a function is passed an argument, it replaces any variables used in the function definition and uses those values to execute the function. In order to better understand, let’s look at some examples:

// Example of passing arguments in Java by GeektoCode
public class GeektoCode {
    public static int addition(int a, int b)
    {
        return a + b;
    }
    public static void main(String[] args)
    {
        int num1 = 5;
        int num2 = 10;
        int addition = addition(num1, num2); // here the variables num1 and num2 are arguments
        System.out.println("Addition of "+num1+" and "+num2+" is: " + addition);
    }
}

OUTPUT:-

Addition of 5 and 10 is: 15

In the above example, num1 and num2 are passed as arguments by calling the method addition().

Parameters:

A parameter is a variable that is used to define a specific value when defining a function. Every time we define a function, we introduce some variables to the compiler that are used during the function’s execution. These factors are frequently referred to as parameters. Although the parameters and arguments generally have the same value, they are theoretically distinct from one another.
Another thing is that a method can accept information as a parameter. Inside the method, parameters function as variables. After the method name, parameters are listed between parentheses. We can enter as many parameters as we like; just comma-separate them.
Example:-

// Example of using parameters in Java by GeektoCode
public class GeektoCode {
public static int addition(int a, int b) // here the variables a and b are the parameters
{
return a + b;
}
public static void main(String[] args)
{
int num1 = 5;
int num2 = 10;
int addition = addition(num1, num2);
System.out.println("Addition of "+num1+" and "+num2+" is: " + addition);
}
}

OUTPUT:-

Addition of 5 and 10 is: 15

In the above example, a and b are parameters used by the method addition().

A parameter is referred to as an argument when it is passed to a method. So from the above example int a, and int b are the parameters, and num1, and num2 are the arguments.

Let’s discuss the difference between Arguments & Parameters:

Argument	Parameter
The values passed in a call to a function are referred to as arguments.	The values that are written when a function prototype and definition are being created.
Arguments are additionally known as Actual Parameters.	Parameters are additionally known as Formal Parameters.
To send values from the calling function to the called function, these are used in the function call statement. The values that are written when a function prototype and definition are being created.	These are utilized in the called function’s function header to receive the value from the arguments.
Every argument is automatically assigned to the parameter specified in the function definition at the time of the call.	When a function is called, parameters, which are local variables, are given the value of the arguments.

The parameter is also referred to as a placeholder, which denotes that it should be used in the function body and be included in the function naming. While actual values, or a real value passed by the function call, are referred to as arguments.

Note:- When we are working with multiple parameters, the method call must have the same number of arguments as there are parameters and the arguments must be passed in the same order.

Thus, the primary subject of this article is Java’s arguments and parameters. I sincerely hope you can use this. Wait for this to meet in the next post, where we will discuss a brand-new aspect of Java. Thanks a lot.