Question

Step 1:

• Create a new Java project in NetBeans called “PartnerLab1”
• Create a new Java Class in that project called "BouncyHouse"
• Create a new Java Class in that project called “Person”

Step 2:

Implement a properly encapsulated "BouncyHouse" class that has the following attributes:

• Weight limit
• Total current weight of all occupants in the bouncy house

(Note: all weights in this assignment can be represented as whole numbers)

…and methods to perform the following tasks:

• Set the weight limit
• Set the total current weight
• Return all info about the bouncy house (you may want to call this method getInfo())
• ‘Add a person’ to the bouncy house by
  1. Testing if their weight would cause the bouncy house to exceed its weight limit if they entered.
  2. Returning true and updating the total current weight of the bouncy house to reflect the addition of their weight (if they are able to enter).
  3. Returning false if they are unable to enter.

Step 3:

• Create a no argument constructor for the BouncyHouse class that sets both the weight limit and the total weight to a default value of 0.

  Step 4:

Implement a properly encapsulated "Person" class that has the following attributes:

• Name
• Weight in pounds

…and methods to perform the following tasks:

• Get the name
• Get the weight
• Return all info about the person (you may want to call this method getInfo())

Step 5:

• Create a two argument constructor for the Person class that takes in the name and weight and sets both attributes accordingly

Step 6:  <-- spoiler alert: this is the hard part...

• Modify your class structure such that:
  • Your design supports the creation of multiple bounce houses
  • You can store and access the names of each person in each bounce house.
• Note that there are a few valid ways to accomplish this. Discuss the upsides and downsides of each approach with your partner. Hints will be given in class.

Step 7:

In your main method:

• Create an instance of your Bouncy House class using your constructor. Use your setter to set the weight limit of the bouncy house. There is no need to modify the total weight at this point since nobody is in the bouncy house to start.
• Repeatedly prompt the user to add a person (including name and weight), or type "q" when done.
  • Attempt to add each person to the bouncy house.

• Display all of the info for the bouncy house and each of the people inside it.

Note: Although your class structure will support multiple bounce houses, your main method only needs to create one.

Answer 1

///////////////////////////TestHouse.java/////////////////////////

package PartnerLab1;

import java.util.Scanner;

public class TestHouse {
  
   public static void main(String args[]){
       Scanner sc = new Scanner(System.in);
       BouncyHouse bh1 = new BouncyHouse();
       bh1.setWeightLimit(1000);
      
       boolean takeData = true;
       do{
           System.out.println("Add a person?Press 'y' to ENTER , 'q' to QUIT");
           String entry = sc.nextLine();
           if(entry.equals("q")){
               takeData = false;
           }else if(entry.equals("y")){
               System.out.println("name:");
               String name = sc.nextLine();
               System.out.println("Weight in pounds:");
               int weight = Integer.parseInt(sc.nextLine());
               Person p = new Person(name,weight);
               bh1.addPerson(p);
           }else{
               System.out.println("Invalid entry!");
           }
       }while(takeData);
      
       sc.close();
      
      
       //UNCOMMENT THE BELOW COMMENTED CODE (in bold) IF YOU NEED TO ADD ANOTHER BOUNCY HOUSE
      
      
       /*System.out.println("Creating 2nd bouncy house");
       BouncyHouse bh2 = new BouncyHouse();
       bh2.setWeightLimit(200);
      
       bh2.addPerson(new Person("Mike",98));
       bh2.addPerson(new Person("Will",76));
      
       bh1.setNextHouse(bh2);*/
   
      
      
       //Print bouncy house info as long as there is a next bouncy house
       BouncyHouse bh = bh1;
       int counter = 1;
       do{
           System.out.println();
           System.out.println("Bouncy house# "+ counter++);
           System.out.println(bh.getInfo());
           if(bh.hasNextHouse()){//will check if there is any next bouncy house
               bh = bh.nextBouncyHouse;
           }else{//break out of the loop
               break;
           }
       }while(true);
      
   }

}

///////////////////////////Person.java/////////////////////////////////////

package PartnerLab1;

//class: Person
public class Person {
   private String name;
   private int weightInPounds;
  
   //constructor
   public Person(String name, int weight){
       this.name = name;
       this.weightInPounds = weight;
   }
  
   //getters
   public String getName(){
       return name;
   }
  
   public int getWeightInPounds(){
       return weightInPounds;
   }
  
   //method: to get person info
   public String getInfo(){
       String info = "[Name: "+name+" , "+"Weight in Pounds: "+weightInPounds+"]";
       return info;
   }
}

//////////////////////////////BouncyHouse.java///////////////////////////////////

package PartnerLab1;

import java.util.ArrayList;
import java.util.List;

//class: Bouncy House
public class BouncyHouse {
  
   private int weightLimit;
   private int totalCurrentWeight;
   private List<Person> persons; //to add persons in this bouncy house
   BouncyHouse nextBouncyHouse = null; //to take multiply bouncy houses as singly linked list
  
   //no arg constructor
   public BouncyHouse(){
       this.weightLimit = 0 ;
       this.totalCurrentWeight = 0;
   }
  
   //method to set next bouncy house for the current bouncy house
   public void setNextHouse(BouncyHouse bh){
       this.nextBouncyHouse = bh;
   }
   //method to check if there exist any next bouncy house
   public boolean hasNextHouse(){
       return (this.nextBouncyHouse!=null? true:false);
   }
  
   //setters
   public void setWeightLimit(int weightLimit) {
       this.weightLimit = weightLimit;
   }
   public void setTotalCurrentWeight(int totalCurrentWeight) {
       this.totalCurrentWeight = totalCurrentWeight;
   }
  
   //add person in the current bouncy house
   public boolean addPerson(Person p){
       if(totalCurrentWeight + p.getWeightInPounds() > weightLimit){
           System.out.println("Person "+p.getInfo()+" is unable to enter.");
           return false;
       }else{
           if(persons == null){
               persons = new ArrayList<Person>();//create a new list
           }
           persons.add(p);//add into list
           //update total weight of this bouncy house
           totalCurrentWeight = totalCurrentWeight + p.getWeightInPounds();
          
           System.out.println("Person "+p.getInfo()+" is able to enter.");
           return true;
       }      
   }
  
   //method to get info of this bouncy house
   public String getInfo(){
       StringBuilder sb = new StringBuilder();
       sb.append("Weight Limit: "+weightLimit);
       sb.append("\nTotal Current Weight Of all Occupants: "+totalCurrentWeight);
       if(persons!=null){
           sb.append("\nPersons in the this bouncy house are:");
           for(Person p : persons){
               sb.append("\n"+p.getInfo());
           }
       }
      
       return sb.toString();
   }
  

}

==========================================

OUTPUT

==========================================

Add a person?Press 'y' to ENTER , 'q' to QUIT
y
name:
harry
Weight in pounds:
191
Person [Name: harry , Weight in Pounds: 191] is able to enter.
Add a person?Press 'y' to ENTER , 'q' to QUIT
p
Invalid entry!
Add a person?Press 'y' to ENTER , 'q' to QUIT
y
name:
gomes
Weight in pounds:
187
Person [Name: gomes , Weight in Pounds: 187] is able to enter.
Add a person?Press 'y' to ENTER , 'q' to QUIT
y
name:
peter
Weight in pounds:
177
Person [Name: peter , Weight in Pounds: 177] is able to enter.
Add a person?Press 'y' to ENTER , 'q' to QUIT
y
name:
larry
Weight in pounds:
167
Person [Name: larry , Weight in Pounds: 167] is able to enter.
Add a person?Press 'y' to ENTER , 'q' to QUIT
y
name:
ronty
Weight in pounds:
178
Person [Name: ronty , Weight in Pounds: 178] is able to enter.
Add a person?Press 'y' to ENTER , 'q' to QUIT
y
name:
dsouza
Weight in pounds:
171
Person [Name: dsouza , Weight in Pounds: 171] is unable to enter.
Add a person?Press 'y' to ENTER , 'q' to QUIT
q

Bouncy house# 1
Weight Limit: 1000
Total Current Weight Of all Occupants: 900
Persons in the this bouncy house are:
[Name: harry , Weight in Pounds: 191]
[Name: gomes , Weight in Pounds: 187]
[Name: peter , Weight in Pounds: 177]
[Name: larry , Weight in Pounds: 167]
[Name: ronty , Weight in Pounds: 178]