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Home Forums How to declare and invoke methods in Java? – MindStick
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1 Answers

Amrith Chandran
Amrith Chandran 21 Mar 2025
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Method in Java

A method in Java is a block of code that performs a specific task. It improves the reusability and modularity of the code.

Declaring a Method

The below syntax is for declaring a method in java,

returnType methodName(parameters) {
   // Method body (statements)
   return value; // (if returnType is not void)
}

Components of a method declaration:

  • Return type - Specifies the data type of the value to be returned by the method. If no value is returned, use void.
  • Method name - Follows standard naming conventions (CamelCase).
  • Parameters (optional) - The values ​​passed to the method inside the brackets.
  • Method body - The actual code inside {} that is executed when the method is called.
  • Return statement (optional) - Used if the method returns a value.

Example

class Example {
   // Method with no parameters and no return value
   void sayHello() {
       System.out.println("Hello, World!");
   }
}

Invoking (Calling) a Method

To execute a method, we need to call it using its name.

Syntax

objectName.methodName(arguments);

If the method is static type then call it using its class name

ClassName.methodName(arguments);

Example

class ClassExample {
   // Method Declaration
   void greet() {
       System.out.println("Welcome to Java!");
   }
   public static void main(String[] args) {
       ClassExample objName = new ClassExample(); // Creating an object
       objName.greet(); // Calling the method
   }
}

Ouput

Welcome to Java!

Also, Read: Types of Methods in Java

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