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Java :: Object class methods

Class Object (java.lang.Object) is the root of the class hierarchy. Every class has Object as a superclass. All objects, including arrays, implement the methods of this class.

Method Summary

Modifier and TypeMethod and Description
protected Objectclone()
Creates and returns a copy of this object.
booleanequals(Object obj)
Indicates whether some other object is "equal to" this one.
protected voidfinalize()
Called by the garbage collector on an object when garbage 
collection determines that there are no more references to the 
object.
Class<?>getClass()
Returns the runtime class of this Object.
inthashCode()
Returns a hash code value for the object.
voidnotify()
Wakes up a single thread that is waiting on this object's 
monitor.
voidnotifyAll()
Wakes up all threads that are waiting on this object's monitor.
StringtoString()
Returns a string representation of the object.
voidwait()
Causes the current thread to wait until another thread invokes
 the notify() method or the notifyAll() method for 
this object.
voidwait(long timeout)
Causes the current thread to wait until either another thread 
invokes the notify() method or the notifyAll() 
method for this object, or a specified amount of time has 
elapsed.
voidwait(long timeout, int nanos)
Causes the current thread to wait until another thread invokes
 the notify() method or the notifyAll() method 
for this object, or some other thread interrupts the current 
thread, or a certain amount of real time has elapsed.

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