Static and Non-Static Variables in Java

• In Java, variables are mainly categorized into two main types based on their working and memory allocation, and these two variables are static variables and non-static variables.

• Static variables: These are variables that are shared among all the instances of a class.

• Non-static variables: These are variables that belong to each individual instance of a class.

Static Variables (Class Variables)

• Declared with the static keyword, these variables belong to the class itself rather than any specific instance.

• Example:
  

public class Home{
    static String Department = "Computer Science";
    static int Mark = 87;
    public static void main(String[] args){
        System.out.println(Home.Department);
        System.out.println(Home.Mark);
    }
}

Output:

Non-Static Variables (Instance Variable)

• Non-static variables are declared without the static keyword and belong to individual objects.

• Example:
  

public class Non_Static{
    String Department = "Computer Science";
    int Mark = 87;
    public static void main(String[] args){
        Non_Static Details = new Non_Static();
        System.out.println(Details.Department);
        System.out.println(Details.Mark);
    }
}

Output: