Methods.md

METHODS in Java

A method in Java is a block of code that performs a specific task.

Example

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

A method usually has:

• a return type
• a name
• parameters (optional)
• a body

General Syntax

returnType methodName(parameters) {
    // code
}

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✔ Types of Methods in Java

1️⃣ Instance Methods

You must create an object to call them.

class Test {
    void show() {
        System.out.println("Instance Method");
    }
}

Test obj = new Test();
obj.show();

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2️⃣ Static Methods

Can be called without creating an object — using class name.

class Test {
    static void display() {
        System.out.println("Static Method");
    }
}

Test.display();

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3️⃣ Parameterized Methods

Methods with input parameters.

void sum(int a, int b) {
    System.out.println(a + b);
}

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4️⃣ Return Type Methods

Methods that return a value.

int add(int a, int b) {
    return a + b;
}

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⭐ FUNCTION vs METHOD in Java

Feature	Function	Method
Belongs to	Independent (not inside a class)	Always inside a class
Used in	C, C++, Python	Java
Relation with object	Not related to objects	Related to classes/objects
Example	int add() {} in C	void show() in Java class

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🔥 Simple Explanation

👉 Function = general term
👉 Method = function inside a class

Because Java is 100% object-oriented, every function exists inside a class, so they are called methods.

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⭐ Example to Understand Clearly

C / C++ Function

int add(int a, int b) {
    return a + b;
}

Same in Java (Now it is a method)

class Demo {
    int add(int a, int b) {
        return a + b;
    }
}