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|Interview Questions and Answers for 'PLC Systems' - 1 question(s) found - Order By Newest|
|Frequently asked. Favorite question in Walk in Drive of many Indian service companies.|
|Ans. clone() - Creates and returns a copy of this object.|
equals() - Indicates whether some other object is "equal to" this one.
finalize() - Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
getClass() - Returns the runtime class of an object.
hashCode() - Returns a hash code value for the object.
toString() - Returns a string representation of the object.
notify(), notifyAll(), and wait() - Play a part in synchronizing the activities of independently running threads in a program.
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Try 1 Question(s) Test
|Difference between == and .equals() ?|
|Which String class does not override the equals() and hashCode() methods, inheriting them directly from class Object?|
|What is the use of Object class ?|
|Can we override wait() or notify() methods?|
|How you can check Object is created or not in case of Singleton using Object class method ?|
|Why wait(), notify(), notifyAll() methods are in Object class instead of Thread class?|