Object, defined by Java. All other classes are subclasses of Object. That is, Object is a superclass of all other classes. This means that a reference variable of type Object can refer to an object of any other class
Object defines the following methods, which means that they are available in every object
Table of object class
| Method | Purpose |
|---|---|
| Object clone( ) | Creates a new object that is the same as the object being cloned |
| boolean equals(Object object) | Determines whether one object is equal to another. |
| void finalize( ) | Called before an unused object is recycled. |
| Class getClass( ) | Obtains the class of an object at run time. |
| int hashCode( ) | Returns the hash code associated with the invoking object |
| void notify( ) | Resumes execution of a thread waiting on the invoking object. |
| void notifyAll( ) | Resumes execution of all threads waiting on the invoking object |
| String toString( ) | Returns a string that describes the object |
| void wait( ) void wait(long milliseconds) void wait(long milliseconds, int nanoseconds) | Waits on another thread of execution. |