User defined key class in the hashtables aur hashmap, JAVA Programming

Assignment Help:

You should override the hashCode() and equals() functions from the Object class. The default implementation of the hashcode() and equals(), which are inherited from the java.lang.Object needs an object instance's memory location. That can cause serious problems when two instances of the car objects have the similar color but the inherited equals() can give false because it uses the memory location, which is distinct for the two instances of object. Also the toString() method may be overridden to give a proper string representation of your object.

 

879_Untitled.png


Related Discussions:- User defined key class in the hashtables aur hashmap

Describe member variables vs. local variables, Describe Member Variables vs...

Describe Member Variables vs. Local Variables ? class Car { String licensePlate = ""; // member variable double speed; = 0.0; // member variable double maxSp

Point of Sale Terminal, The problem statement is pretty simple. We need a s...

The problem statement is pretty simple. We need a software implementation of a Point of Sale terminal at a typical store. The users of the system are the cashiers sitting at the sa

Write a bouncing ball game, Write a bouncing ball video game. The game is s...

Write a bouncing ball video game. The game is similar to the one described and depicted in Figure of the text book. The balls bounces within the screen where the two horizontal wal

Code, Write a programme to create a webpage that prints the name of the STU...

Write a programme to create a webpage that prints the name of the STUDENT database in Wide Latin font and set the subtitle with description of the STUDENT to the screen. Set the pa

Preemptive scheduling and time slicing, In pre-emptive scheduling, the high...

In pre-emptive scheduling, the highest priority task implements until it enters the waiting or dead states or a higher priority task comes into existence. In time slicing, a tas

Assignment, For this Assignment, submit the following program: Create an ap...

For this Assignment, submit the following program: Create an application for an animal-fur trimming service. The business is open 15 weeks of the year, from April through July. The

Using rmi build robust distributed systems-jdbc odbc, This work assesses th...

This work assesses the following Outcomes: • Build robust, secure distributed systems using advanced programming techniques Use RMI to build a distributed application accessing

Difference between bean factory and application context, On the surface, an...

On the surface, an application context is similar as a bean factory. But application context offers much more.. ? Application contexts give a means for resolving text messages,

Types of dependency injection spring supports, What are the types of Depend...

What are the types of Dependency Injection Spring supports? Ans) there are two types of Dependency Injection Spring a)  Setter Injection: b)  Constructor Injection:

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