Sunday, June 15, 2014

The java object - great interview question

Tell me about the Java Object

Well its what everything in java inherits from.

lt's like the super of all objects




  • Method Summary

    Methods 
    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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