JAVA is a special class Object, javaobject

JAVA is a special class Object, javaobject

A special class
Object: it is the direct or indirect parent class of all objects in java. The root parent class (base class) defines the function that all objects should have (all classes, are inherited from this class)

Remember: when defining a new class, it does not specify to inherit a class. It inherits the Object class by default.

= The equals in the object actually compares the two objects with the same memory address

 

The object contains the following methods:

 

 

Method Summary
protected  Object	clone() Create and return a copy of this object.
boolean	equals(Object obj) Indicates whether another object is "equal" to this object ".
protected  void	finalize() When the Garbage Collector determines that there is no more reference to this object, the object's garbage collector calls this method.
Class<?>	getClass() Return thisObject.
int	hashCode() Returns the hash value of the object.
void	notify() Wake up a single thread waiting on this object monitor.
void	notifyAll() Wake up all threads waiting on this object monitor.
String	toString() Returns the string representation of the object.
void	wait() Thenotify()Method ornotifyAll()Method, causing the current thread to wait.
void	wait(long timeout) Thenotify()Method ornotifyAll()Method, or the current thread waits until the specified time is exceeded.
void	wait(long timeout, int nanos) Thenotify()Method ornotifyAll()Method, or other threads that interrupt the current thread, or have exceeded a certain amount of time, causing the current thread to wait.