Question

WRITE THE PROGRAM IN JAVA.

gram 3: Olympians I C 1 Goals To write your own class in a program To write a constructor with parameters, an method and a toString) method. To use ArrayList To use a for-each loo . p *l . To use text file for output 2 The Context This is a single-class project, the first for which I have not given you code to start from. It is not realistic, or useful, but it gives us a place to start. This does not follow the MVC pattern for simplicity's sake. It is very important that you follow these instructions closely. They will guide you through learning a specific set of skills. Do not try to solve the problem some other way 2.1 The Olympian Class Create a class called "Olympian" to hold the facts about a member of the 2018 USA Olympic Team name, sport, numMedals and event 1. In this class, provide four private data members: name, sport, numMedals and event. 2. Create a constructor with four parameters (name, sport, numMedals and event) 3. Also provide a toString) method and a computeMedals) method The compute function. In your computeMedals), a static function, do all of the following 1. Take one parameter, an array of Olympian objects 2. Use a for-each loop to walk through the ArrayList 3. For each Olympian in the array: o get the numMedals using an accessor method (getter) o use the numMedals to add to the total number of medals for all the Olympians o return the total number of medals The main function. In your main function, do all of the following Output a welcome message to the console that includes the assignment name, P3: Olympians and your name 4. 5. Allocate an ArrayList of the class Olympian 6. In a loop, read in the name, sport, numMedals and event of each Olympian. Use these to create an Olympian object and add it to the Olympians ArrayList Validate input for NumMedals. It cannot be negative or more than 10 (Michael Phelps has 8) but it can be zero o 7. When input is finished, call the function named computeMedals), described above, and receive a return value that is the total medals received bv all the Olvmpians in vour list. Print this to the console with an appropriate label 8. Use a for-each loop to print the array of Olympians and show their name, sport, numMedals and event. Use proper labels and spacing so it looks like a table Open a file named "results.txt" for output and declare a Print Writer 9.

Answer 1

Program:

import java.io.File;

import java.io.FileNotFoundException;

import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.Scanner;

public class Olympian {

//variables

private String name;

private String sport;

private int numMedals;

private String Event;

//constructor

public Olympian(String name, String sport, int numMedals, String event) {

super();

this.name = name;

this.sport = sport;

this.numMedals = numMedals;

Event = event;

}

//setters and getters

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getSport() {

return sport;

}

public void setSport(String sport) {

this.sport = sport;

}

public int getNumMedals() {

return numMedals;

}

public void setNumMedals(int numMedals) {

this.numMedals = numMedals;

}

public String getEvent() {

return Event;

}

public void setEvent(String event) {

Event = event;

}

//toString method

@Override

public String toString() {

return "Olympian [name=" + name + ", sport=" + sport + ", numMedals="

+ numMedals + ", Event=" + Event + "]";

}

///method to compute medals

public static int computeMedals(ArrayList<Olympian> op)

{

int nMedals=0;

for(Olympian o:op)

{

nMedals+=o.getNumMedals();

}

return nMedals;

}

public static void main(String args[]) throws FileNotFoundException

{

//displaying header here

System.out.println("Youe welcome statement goes here");

ArrayList<Olympian> o=new ArrayList<Olympian>();//arraylist to hold olympian objects created

Scanner sc=new Scanner(System.in);

String n,e,s;

int k;

for(int i=0;i<2;i++)//for loop to create olympian objects

{

//reading varaiables to for creation of object

System.out.println("Enter name");

n=sc.next();

System.out.println("Enter Sport");

s=sc.next();

System.out.println("Enter Event");

e=sc.next();

//validation for no of medals

do

{

System.out.println("Enter num of medals");

k=sc.nextInt();

}while(k<0);

o.add(new Olympian(n,s,k,e));//creating object and adding to arraylist

}

//calculating no of medals and displaying it

System.out.println("Total number of medal by all olympians: "+Olympian.computeMedals(o));

System.out.println("Name\tEvent\tSport\tNo of Medlas\t");

//iterating through array list and writing to file

for(Olympian ol:o)

{

System.out.println(ol.getName()+"\t"+ol.getEvent()+"\t"+ol.getSport()+"\t"+ol.getNumMedals());

}

PrintWriter pw=new PrintWriter(new File("F://anand/Chegg/src/results.txt"));

pw.write("Name\tEvent\tSport\tNo of Medlas\t\n");

for(Olympian ol:o)

{

pw.write(ol.getName()+"\t"+ol.getEvent()+"\t"+ol.getSport()+"\t"+ol.getNumMedals()+"\n");

}

pw.write("\t\t\t\t==========\n\t\t\t\t "+Olympian.computeMedals(o));

pw.close();

}

}

Output:

@Javadoc G Declaration 모 Console XI-×荧 테해(EL图1ピ <terminated OI Youe welcome statement goes here Enter name hon Enter Sport cycling Enter Event olympic2008 Enter num of medals 23 Enter name Williams Enter Sport Boxing Enter Event olympics2012 Enter num of medals ian [Java Application] C:Program Files Javalire1.8.0 144\ bin avaw.ex Total number of medal by all olympians: 111 Name Event Sport No of Medlas hon olympic2088 Williams cycling 23 olympics2012 Boxing 88

Fianand\Chegglsrcresults.txt - Notepad++ e Edit Search View Encoding Language Settings Tools Macro new 12 3new 13X new 1 Name Event Sport No ofAedha 2 ihon dad cycling 12 3 dagdhi dads new new new 46