Difference between Argument and Parameter in Java

In this section, we are going to learn a difference between Argument and Parameter in Java. They both caries the same value but actually they are different from each other.

• Argument is a variable whose value is passed into a function and is used whenever a function is called. Parameter is the value that is defined in a functional block. So, it is basically used whenever we need to pass a value to a particular functional block.
• Arguments are used to send the values to the function whereas parameters are used to receive or hold the values of arguments.
• During a function call, each argument is associated with a parameter and vice versa is also true.
• Arguments are called the actual parameter whereas parameters are called formal parameters.

Java program to understand the difference between Argument and Parameter

package CodeSpeedy;

public class ArgumentVsParameter {

  public static void main(String[] args) {
    // TODO Auto-generated method stub
    String a="Code";
    String b="Speedy";
    System.out.println("In the main block");
    String c=concatenation(a,b); //a and b are arguments
    System.out.println(c);

  }
  public static String concatenation(String x,String y) { // x and y are parameters
    System.out.println("In the functional block");
    return x+y;
  }
}

Output:

In the main block
In the functional block
CodeSpeedy

Also read: Comparable and Comparator in Java with examples