Java Methods

In Java, a method is a block of code that performs a specific task and can be invoked or called from other parts of the program. Here's a concise overview:

Syntax:

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

returnType:

• Specifies the data type of the value that the method returns.
• Use void if the method does not return any value.

methodName:

• The name of the method, which should be meaningful and descriptive.

parameters:

• Optional inputs to the method, specified as a list of comma-separated variables.

Method Example:

• Example of a method that adds two numbers:

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

Calling a Method:

• Methods are called using their name followed by parentheses, optionally passing arguments.
• Example:

int sum = add(5, 3);

Void Methods:

• Methods that do not return a value are declared with void as the returnType.
• Example:

void greet() {
    System.out.println("Hello, world!");
}

 

Summary

Java methods provide a way to organize code into reusable blocks, promoting modularity and code reusability. Understanding how to define and call methods is fundamental for structuring Java programs and implementing modular designs.