Non-final functions in java object class, JAVA Programming

Assignment Help:

clone (), finalize (), toString (), equals (), hashCode () and. The other methods like wait (), getClass (), notifyAll (), notify ()

toString():

 The toString() function given by the java.lang.Object returns a string, which consists of the class name followed by an "@" sign and then unsigned hexadecimal presentation of the hashcode, As Set@162b91. This hexadecimal presentation is not what the users of your class want to see.

 

clone():

 

You have to override the clone() method very judiciously. Implementing a properly working clone method is complex and it is rarely used. You are better off providing some alternative defines of object copying or simply not giving the capability. A better approach is to give a copy constructor or a static factory function in place of a constructor.

 

finalize():

 

Unlike C++ destructors, the finalize() method in Java is unpredictable,  dangerous and usually unnecessary. Use try{} finally{} blocks in Enterprise section. The finalize() method could only be need in rare instances to terminate non-critical native resources or as a safety net.

protected void finalize() throws Throwable {

try{

//finalize subclass state

}

finally {

super.finalize();

}

}

 


Related Discussions:- Non-final functions in java object class

Boardcolourling, write a program to find the minimum no of colors to fill a...

write a program to find the minimum no of colors to fill a board where some of the elements of different color are already placed.

Automated the claim sub-system, Automated the claim sub-system: Insur...

Automated the claim sub-system: Insurance Domain:       CIA-MI   Type                                         Development - Web-based Application Role

Define when to use hashmap and when to use treemap, How do you decide when ...

How do you decide when to use HashMap and when to use TreeMap? When we want to perform deletion, insertion and locate elements in a Map then HashMap is used. Whereas TreeMa

What is the use of lookupdispatchaction, LookupDispatchAction is useful if ...

LookupDispatchAction is useful if the method name in the Action is not driven by its name in the front end, but by the Locale independent key into the resource bundle. As the key i

Different messaging paradigms jms supports, What are the different messagin...

What are the different messaging paradigms JMS supports? Ans) Publish and Subscribe i.e. pub/suc and Point to Point i.e. p2p.

Explain about the security aspect of java, Java has some bugs in its applet...

Java has some bugs in its applets. Java team stated that they have zero tolerance over security features and subsequent editions of Java are managing Bug free environment. Some of

Explain difference between the boolean and operator, What is the difference...

What is the difference between the Boolean & operator and the && operator? If an expression including the Boolean & operator is evaluated, both operands are evaluated. Then the

Illustrate about object oriented programming, Object Oriented Programming ...

Object Oriented Programming   Java is basically object oriented. Each line of code you write in java should be inside a class (not counting import directives). OOP fundamental

Nonrecursive implementations of the min() and floor() method, Write nonrecu...

Write nonrecursive implementations of the min() and floor() methods in BST.java. Make sure to use only one return in your method. Use an insertion sort (discussed in class) to s

Give an example of code using static and finalize, Give an example of code ...

Give an example of code using static and finalize Example Code: using static & finalize () We want to count exact number of objects in memory of a Student class the one de

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd