The static keyword is a non-access modifier in Java and can be used for variables, methods, and code blocks. A static variable in Java belongs to a class, that is, it is initialized only once at the beginning of execution. By using static variables, all instances of the class share a copy, and they can be accessed directly through the class name, without any instances. A static method also belongs to a class rather than an instance, it can only

In Java, an object is an instance of a class. A class is a blueprint or template for creating objects, which defines the properties and behaviors that an object of that class will have. An object class is the actual implementation of a class that defines the properties and methods for an object.

The object class in Java is the root class for all other classes in Java. Every class in Java is a descendant of the object class. The object class is defined in the java.lang package and provides a set of methods that are available to all Java classes. These methods include toString(), equals(), hashCode(), and getClass().

The toString() method is used to convert an object into a string representation. The equals() method is used to test whether two objects are equal. The hashCode() method is used to get the hash code of an object. The getClass() method is used to get the class of an object.

Since every class in Java is a descendant of the object class, the methods defined in the object class can be used by any class in Java. This allows for a consistent and standard way of working with objects in Java.

In summary, the object class in Java is the root class for all other classes, and provides a set of methods that are available to all Java classes.