Static Keyword

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Static Keyword

The static keyword is used in many programming languages like Java, C, and C++ to define class-level members that belong to the class itself rather than to any specific object. It can be applied to variables, methods, blocks, and classes (in some languages).

🔹 Static Variables:

A static variable is shared by all objects of a class. Instead of creating a new copy for each object, there is only one static variable in memory.

java

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static int count = 0;

Example use: Counting the number of objects created from a class.

🔹 Static Methods:

Static methods can be called without creating an object of the class. They can only access static variables and call other static methods.

java

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static void display() {

    System.out.println("This is a static method");

}

🔹 Static Blocks:

Static blocks are used for static initialization of a class. They are executed only once when the class is loaded.

java

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static {

    // initialization code

}

🔹 Key Features:

Saves memory (shared data)

Can be accessed directly using class name

Used for utility or helper methods (like Math.sqrt())

✅ Example:

java

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class Example {

    static int x = 10;

    static void show() {

        System.out.println("Static method, x = " + x);

    }

}

You can call: Example.show();

The static keyword helps create more efficient, memory-saving, and organized programs.

Let me know if you'd like this in Telugu or with examples in another language like C++ or Python (for @staticmethod).

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