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Attend our Free Webinar on How to Nail Your Next Technical Interview

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How To Nail Your Next Tech Interview

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Ryan Valles
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Our tried & tested strategy for cracking interviews
How FAANG hiring process works
The 4 areas you must prepare for
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Static Keyword in Java

Attend our Free Webinar on How to Nail Your Next Technical Interview

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How To Nail Your Next Tech Interview

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Ryan Valles
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Our tried & tested strategy for cracking interviews
How FAANG hiring process works
The 4 areas you must prepare for
How you can accelerate your learnings

Static Keyword in Java

## Introduction to Static Keyword in Java The static keyword in Java is used for memory management primarily. It is a keyword that can be used to give a particular property for a given class, depending on how it is used. When the static keyword is used with a class, the entire class, including all of its members, is made static. This means that the class and all of its members can be accessed without having to instantiate an object of the class. The static keyword can also be used with variables, methods, blocks, and nested classes. When a static keyword is used with a variable, it makes that variable a class variable, which means that the value of the variable is shared by all objects of the class. When a static keyword is used with a method, it makes that method a class method, which means that the method can be invoked without the need for creating an object of the class. Similarly, when a static keyword is used with a block, it makes that block a static block and it gets executed when the class is loaded into the memory. The primary purpose of the static keyword is to manage memory more efficiently. By making class members static, a single copy of that member is shared among all objects of the class. This saves memory because multiple copies of the same member are not created for each object. Thus, the static keyword helps in memory management by reducing the amount of memory needed to store the same property for multiple objects.

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The static keyword in Java is used to signify that a particular field or method is a static member. The static keyword allows a class to maintain a single copy of the member that can be accessed without the need to instantiate an object of the class. Examples of static members include static variables, static methods, and static blocks of code. **Static Variable:** A static variable is declared using the static keyword, and is used to store information which is not associated with any particular instance of the class. Example: ``` public class ExampleClass { public static int count = 0; public int nonStaticCount = 0; public ExampleClass() { count++; nonStaticCount++; } } ``` **Static Method:** A static method is declared using the static keyword and can be accessed without the need to instantiate an object of the class. Example: ``` public class ExampleClass { public static void printMessage(){ System.out.println("This is a static method"); } } ``` **Static Block of Code:** A static block of code is used to execute code before the main method is called. This code is executed when the class is loaded into the JVM. Example: ``` public class ExampleClass { static { System.out.println("This is a static block of code"); } } ```