Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Java Expert


Home >> Java

problem1. Create a class Rational to provide at least following methods and constructors:

Rational r1= new Rational (3,5);
Rational r2= new Rational (4,7);
Rational r3=r1.add(r2);
// also sub,mult,divide methods
Other that four operations you should provide methods which you think are useful for user of your class.

problem2. prepare a JFrame or JApplet (file name: TestRational.java) which performs the subsequent tasks:

i) Describe two arrays of size 10. Each element in the array references to a rational object which you wrote.

      Rational a[], b[];
      a = new Rational[10];
      b = new Rational[10];

637_rational denominator.jpg

               
ii) Initialize the arrays in problem a) by making random Rational numbers. Do this by generating two random numbers between 1 and 9 for each Rational and using the numbers as the numerator and denominator. Denominator must be greater than Numerator. You must generate random numbers with Math.random.

iii) Display the contents of both arrays on the screen using JTextArea.

iv) Add a Scrollbar to JTextArea for scrolling up or down.

v) For each public method in rational class, create a corresponding JButton object. When the user clicks on a button, the actionPerformed listener must execute the corresponding rational method for all the elements in the two arrays and store the results in a new array. You must then display the result array in the JTextArea using the setText method. For ex, if the user hits the add button you should loop through all the elements in arrays and execute:
   c[i] = a[i].add(b[i]);

v) If the user hits the sort button, uses the JTextArea method appends to append the results of sorting.

 

Java, Programming

  • Category:- Java
  • Reference No.:- M9616

Have any Question? 


Related Questions in Java

Assignmentobjectivethis project focuses on demonstrating

Assignment Objective This project focuses on demonstrating your understanding of Java Collections. Before attempting this project, be sure you have completed all of the reading assignments listed in the syllabus to date, ...

Design your own java class that includes at least 3 data

Design your own Java Class that includes at least 3 data fields, 2 constructors and 4 methods. When designing your class, pick an object that you are familiar with and make it your own, realistic, yet simple design with ...

Java program for profhudaneed help with java program just

Java program for Prof.Huda Need help with java program ... just apply an example how i want my assignmemt to look like . you can use the same code to do the program .. by the way i"m using JCreater .. The assignment is : ...

1how does java support the concept of encapsulation2

1. How does Java support the concept of encapsulation? 2. Describe the difference between an object and a class. 3. What is the difference between the contents of a Java variable of a primitive type and a Java variable o ...

Programming assignmentyou to write a class named

Programming Assignment You to write a class named WeaklyCalendar. This class must be in a package named pa4. Note that the description of a programming assignment is not a linear narrative and often requires multiple rea ...

Java programmers can use class hierarchies for the purposes

Java programmers can use class hierarchies for the purposes of inheritance. For example, given a Tree class, we could define Conifer and Deciduous sub classes that inherit from the parent Tree class as you can see here: ...

Discussion please respond to the following promptbull

Discussion, please respond to the following prompt: • Compare and contrast abstract classes and interfaces. In what situations would you use an abstract class? in what situations would you use an interface? Imagine your ...

This assignment consists of two sectionsbulljava program

This assignment consists of two sections: • Java program file(s) • A screenshot of the execution and source code of your Java program Label each file name according to the section of the assignment for which it is writte ...

Assignment introduction to programming using java1 write a

Assignment: Introduction to Programming Using Java 1. Write a program that uses one of the Map classes to implement a contact list. Contact information should include first name, last name, a phone number and an email ad ...

Java programmingwrite a java application using netbeans

JAVA PROGRAMMING Write a Java application using NetBeans Integrated Development Environment (IDE) that calculates the total annual compensation of a salesperson. Consider the following factors: • A salesperson will earn ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen