Activity 1 • Design & implement a class named Coin with the following fields & m

Question

Activity 1

• Design & implement a class named Coin with the following fields & methods

o sideUp – an instance variable indicating the face value of the coin (e.g., “Heads” or “Tails”)

o coinValue – an instance variable holding the actual coin value – $0.25 (quarter,) $0.10 (dime) and $0.05 (nickel)

o Coin() –

A no-arg constructor

randomly assign the side of the coin that is facing up (“Heads” or “Tails”)

initialize it as a quarter

o Coin(amount) –

constructor to set the coin value as quarter, dime or nickel

randomly assign the side of the coin that is facing up

o Coin(amount, face) –

constructor to set the coin as quarter, dime or nickel

set its sideUp to the face value

o toss()

tossing the coin

o getSideUp() –

getter function

returns the value of the sideUp field

Activity 2 • Design & implement a Java class named Uber (taxi-like service) with the following features -

o Schedule a pickup by specifying

Name of customer

Pickup date & time (use the date found in import java.util.Date)

Number of passengers (to be picked up)

Distance (destination in term of whole miles, to make the class easier to implement)

o Compute the total cost of the trip and display cost to console $2 per mile for the 1st two passengers $5 per additional passenger (starting with the 3rd passenger)

Activity 3

• Implement a Driver class with the following functionalities –

o main() Menu-driven application allowing an user to –

• Toss a coin for a specified number of times & display its outcome o For example, an user could choose to toss the coin for 20 times o display the actual outcome: 12 “heads” & 8 “tails” (this is an example only)

• Play the “Price-is-Right” game o Start a game with $0 in a jackpot as the game begins

Simulate a randomly tossing one of three coins (quarter, dime & nickel)

Add the value of the selected coin to the jackpot (e.g., $0.05, $0.10 or $0.25) Repeat this process until

• A maximum of 4 tosses have occurred (game over)

• Total of more than $0.75 (User won!)

• Schedule a ride for one of three Uber cars (4, 5 & 6 passengers)

o A car can only be scheduled if it’s available

o Display scheduled info to console once a car has been scheduled

• Allow user to continue using this program for as long as they choose to

Explanation / Answer

Activity 1:

import java.io.*;

import java.util.*;

public class Coin() {

public static void main(String args[]) throws Exception {

intcoinval; String sideup;

int ch_side,ch_cval;

switch(ch_side) {

case 1: “Heads”; break;

case 2: “Tails”; break;

}

switch(ch_cval) {

case 1: quarter = $0.25; break;

case 2 : dime = $0.10; break;

case 3: nickel = $0.05; break;

}

void Coin() {

int cval; String side;

if(sideup == “Heads”)

side = “Heads”;

else

side = “Tails”;

cval = quarter;

System.out.println(“ side is:” + side);

System.out.println(“Coin value is:” + cval); }

void Coin(int amount) {

int cval; String side;

cval = amount;

if(sideup == “Heads”)

side = “Heads”;

else

side = “Tails”;

System.out.println(“ side is:” + side);

System.out.println(“Coin value is:” + cval); }

void Coin(int amount, Stringface) {

int this.cval = amount;

String this.side = face;

}

void toss() {

int h=0,t=1;

Random random = new Random();

int side = random.nextInt(2);

if(side = = 0)

System.out.println(“Heads”);

else System.out.println(“Tails”);

}

void getsideUp() {

return this.side;

}

} }

Activity 2:

import java.io.*;

import.java.util.*;

public class Uber {

public static void main(String args[]) throws Exceptions {

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

System.out.println(“Enter customer name :”);

String customer =br.readLine();

System.out.println(“Customer name is:” + customer);

Date date = new Date();

System.out.println(“ Date is: “ + date.toString());

System.out.println(“Enter No of passengers:”);

int n = br.readLine();

System.out.println(“ No of passengers: “ + n);

System.out.println(“Enter distance in miles:”);

int dist = br.readLine();

System.out.println(“Distance is:” + dist);

int cost = $2;

if(n>=3){

cost = cost +$5;

else cost; }

int total_cost = cost;

System.out.println(“total cost is :” + total_cost);

}

}

Activity 3:

import java.io.*;

import java.util.*;

public class User {

public static void main(String args[]) throws Exception {

void toss() {

int h=0,t=1,outcome,outcome1;

Random random = new Random();

int side = random.nextInt(2);

for(int n=1;n<=20;n++) {

if(side == 0)

outcome = h++;

else

outcome1 = t++;

}

System.out.println(“total outcomes : “ + outcome + “Heads” + outcome1 + “Tails” );

}

void priceisRight() {

int cost=$0;

int n=4;

int cval[3] = {quarter = $ 0.25; dime = $ 0.10;nickel = $ 0.05};

for(n=1;n<=4;n++) {

if(cval == quarter)

cost = cost + quarter;

else if(cval == dime)

cost = cost + dime

else cost = cost+nickel;

}

int total_cost = cost;

if(total_cost>$0.75)

System.out.println(“Won”);

else

System.out.println(“Lose”);

}

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