Inheritance and Polymorphism in Java | Practice Question

By Hassnain Jamil -

Transportation

A container terminal is a facility where cargo containers are transshipped between different transport vehicles, for onward transportation. The transshipment may be between container ships and land vehicles, for example trains or trucks, in which case the terminal is described as a maritime container terminal. Alternatively the transshipment may be between land vehicles, typically between train and truck, in which case the terminal is described as an inland container terminal.

A terminal handles different types of containers like General purpose containers, Reefer Containers, Hazardous Container etc. Every container should mandatorily have Container number in the format XXXUNNNNNN9 where first three characters are owner code in alphabets, U - can be G - for general purpose, R for Reefer, H for Hazardous, 5th to 10th characters is serial number which is unique. Containers will have other attributes like ISO Code (String), Size (vaules can be 20, 40 or 45). Reefer Containers will have a cooling unit (String) where as Hazardous containers will have IMDG Class (Number), Code (String).

  • a) Identify the classes in the above scenario
  • b) Create classes to implement inheritance concept.
  • c) Add a method display to print the details of containers depending on the type.
  • d) Write a program to implement Polymorphism concept, Dynamic method dispatch concept.
  • e) Make the Container class as abstract and implement Dynamic method dispatch
  • f) Write a program to use super, instance of keywords in an appropriate way.

CONTACT DETAILS

For any other questions or other tasks please feel free to contact me
via email: mhassnainjamil@gmail.com
via WhatsApp: +92-324-7042178
via skype: hassnainjamil1

Comments

Post a Comment

Popular posts from this blog

[SOLVED] Tape for a Turing Machine using Doubly-linked List in Java with full source code

By Anonymous -
Tape for a Turing Machine (Doubly-linked List) Short exercise in which you will code part of an existing project. In this case, you will be working with a doubly-linked list. To make this topic more interesting, the list that you work on will be part of a Turing Machine. A Turing Machine is a kind of very simple, abstract computing device that was introduced in the 1930's by Alan Turing as a way of studying computation and its limitations. The classes that you need for the lab are in a package named turing. You will define a new class named Tape in this package. You can find the Java source in the code directory. You should copy this directory into an Eclipse project. There will be errors, since the existing classes depend on the Tape class, which you have not yet written. Don't forget the Javadoc comments. A Class for Turing Machine Tapes A Turing machine works on a "tape" that is used for both input and output. The tape is made up of little squares called cell
Read more

[SOLVED] Branch Coverage, Statement Coverage and Path Coverage | Java Unit Testing

By Anonymous -
Create a directory called “TestClassValue” Hereafter, we call this directory <dir>. Create a Java class com.work.sample.FlawedClass in directory <dir>/src. (The actual path will obviously reflect the package structure.) 100% Branch Coverage & 100% Statement Coverage Add to the class a method called flawedMethodl that contains a division by zero fault such that it is possible to create a test suite that achieves 100% branch coverage and does not reveal the fault every test suite that achieves 100% statement coverage reveals the fault. Conversely, if you were able to create the method, then create two JUnit test classes com.work.sample.FlawedClassTestBCl and com.work.sample.FlawedClassTestSCl for class FlawedClass as follows: FlawedClassTestBCl should achieve 100% branch coverage of flawedMethodl and not reveal the fault therein. FlawedClassTestSCl should achieve 100% statement coverage of flawedMethodl and reveal the fault therein. Both classes should be
Read more

[SOLVED] Buggy Search And Sort Buy Reporting with Java source code

By Anonymous -
Report The Bug From The Following Source Code: import java.util.Arrays; /** * This class looks like it's meant to provide a few public static methods for * searching and sorting arrays. It also has a main method that tests the * searching and sorting methods. *  * TODO: The search and sort methods in this class contain bugs that can cause * incorrect output or infinite loops. Use the Eclipse debugger to find the bugs * and fix them */ public class BuggySearchAndSort { public static void main(String[] args) { int[] A = new int[10]; // Create an array and fill it with random ints. for (int i = 0; i < 10; i++) { A[i] = 1 + (int) (10 * Math.random()); } int[] B = A.clone(); // Make copies of the array. int[] C = A.clone(); int[] D = A.clone(); System.out.print("The array is:"); printArray(A); if (contains(A, 5)) { System.out.println("This array DOES contain 5."); } else { System.out.println("This array DOES NOT contain 5."
Read more