Static Keyword

What is the Static Keyword?

Static:

• Variable declared using static keyword, it is known as a static variable.
• The static variable will be shared with all objects(not unique for each object).
• The memory will be created to a static variable only once at the time of class loading.

Static Keyword

Demo on Static keyword:

public class StaticDemo {

    int i = 0; // variable
    static int j = 0; // static variable

    StaticDemo() {
        i++;
        j++;
    }

    public static void main(String args[]) {
        StaticDemo sd = new StaticDemo();
        System.out.println("Static variable value=" + sd.j);
        System.out.println("Non Static variable value=" + sd.i);
    
        StaticDemo sd1 = new StaticDemo();
        System.out.println("Static variable value=" + sd1.j);
        System.out.println("Non Static variable value=" + sd1.i);
    
        StaticDemo sd2 = new StaticDemo();
        System.out.println("Static variable value=" + sd2.j);
        System.out.println("Non Static variable value=" + sd2.i);
    }
}

Output:

Static Keyword

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