What is the purpose of the static modifier in Java and in what scenarios is it used?

In Java language, the static modifier is used to indicate that a class member (variable or method) belongs to the class itself rather than to a specific instance.

Main features and usage scenarios:

• Static variables (fields) — shared among all objects of the class. For example, a counter of created objects.

• Static methods — can be called without creating an instance of the class. Usually used for utility or factory methods.

• Static initialization blocks — executed when the class is loaded, used for complex initialization of static fields.

Example:

public class Counter {
    private static int count = 0; // shared variable for all objects

    public Counter() {
        count++;
    }

    public static int getCount() {
        return count;
    }
}

// Usage:
Counter c1 = new Counter();
Counter c2 = new Counter();
System.out.println(Counter.getCount()); // Outputs 2

Thus, static allows creating members that do not depend on a specific object, which is convenient for storing common data or creating utility methods.