What are the methods in java

Methods in Java are blocks of code that encapsulate behaviors and operations, similar to functions, but located in a class or interface and can access the state of the class or the constants of the interface. Methods can be classified according to access permissions and return types: Access permissions: public, protected, default, private Return type: any Java type or void

Methods in Java

Methods are blocks of code in Java that encapsulate behaviors and operations. It is similar to a function, but it is located in a class or interface and has access to the state of the class or the constants of the interface.

Classification of Types

Methods in Java can be classified based on their access rights and return types:

• Access Rights :Determines which classes or packages can access this method. There are four access modifiers: public, protected, default (also called package access), and private.
• Return type: Specify the type of value returned after the method is executed. Can be any Java type, including primitive types, reference types, and void (meaning no value is returned).

Method signature

A method signature consists of its name, parameter list, and return type. For example:

<code class="java">public int add(int a, int b)</code>

This method is named add, receives two integer parameters (a and b) and returns an integer value.

Method body

The method body contains the actual code to be executed. It is between curly braces { and }. For example:

<code class="java">public int add(int a, int b) {
    return a + b;
}</code>

This method body returns the sum of parameters a and b.

Call a method

To call a method, use dot syntax, specifying the object (or class, for static methods) and the method name. For example:

<code class="java">MyObject object = new MyObject();
int result = object.add(10, 20);</code>

This code calls the add method of the MyObject class and stores its result in the result variable.

Overloading

Overloading refers to creating a method with the same name but a different parameter list. This allows us to provide different behaviors for different types of parameters. For example:

<code class="java">public int add(int a, int b) {
    return a + b;
}

public double add(double a, double b) {
    return a + b;
}</code>

The first add method accepts an integer parameter and returns an integer value, while the second add method accepts a floating point parameter and returns A floating point value.

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