Java Method Parameters

In Java, method parameters are variables that are specified in the method declaration and act as placeholders for values that are passed into the method when it is called. Here's a concise overview:

Syntax:

returnType methodName(parameter1Type parameter1, parameter2Type parameter2, ...) {
    // Method body
    // Code to execute
    return result; // Optional return statement
}

Parameter Types:

• Each parameter in the method declaration specifies its data type.

Parameter Names:

• Used to refer to the values passed into the method within its body.

Passing Parameters:

• When calling a method, values (arguments) are passed to the corresponding parameters.
• Example:

int sum = add(5, 3);

Example:

• Method with parameters:

int add(int num1, int num2) {
    return num1 + num2;
}

Multiple Parameters:

• Methods can have multiple parameters, separated by commas.
• Example:

void printDetails(String name, int age) {
    System.out.println("Name: " + name);
    System.out.println("Age: " + age);
}

 

Summary

Method parameters allow methods to accept inputs and perform operations based on those inputs, enhancing code flexibility and reusability. Understanding how to define and use method parameters is essential for building versatile and modular Java programs.