犬のクラスJavaの割り当て

Question

私はJavaプログラミングの学生であり、割り当てが忙しいです。私は本当にいくつかの助けに感謝します。以下は

/** 
* Class for basic dog data: name, age, weight, breed and booster shot info. 
*/ 
public class Dog { 
    private String name; //name of dog 
    private int age; //in years 
    private double weight; //in pounds 
    private String breed; //breed of dog 
    private boolean boosterShot; //Status of booster shot 

    public Dog() { 
     name = "No name yet."; 
     age = 0; 
     weight = 0; 
     breed = "No breed yet."; 
     this.boosterShot = false; 
    } 

    public Dog(String initialName, int initialAge, 
       double initialWeight, String initialBreed, boolean boosterShot) { 
     name = initialName; 
     if ((initialAge < 0) || (initialWeight < 0)) { 
      System.out.println("Error: Negative age or weight."); 
      System.exit(0); 
     } else { 
      age = initialAge; 
      weight = initialWeight; 
      breed = initialBreed; 
      this.boosterShot = boosterShot; 
     } 
    } 

    public Dog(String initialName, String initialBreed, boolean boosterShot) { 
     name = initialName; 
     age = 0; 
     weight = 0; 
     breed = initialBreed; 
     this.boosterShot = boosterShot; 
    } 

    public Dog(int initialAge) { 
     name = "No name yet."; 
     weight = 0; 
     breed = "No breed yet."; 
     boosterShot = false; 
     if (initialAge < 0) { 
      System.out.println("Error: Negative age."); 
      System.exit(0); 
     } else 
      age = initialAge; 
    } 


    public Dog(double initialWeight) { 
     name = "No name yet."; 
     age = 0; 
     breed = "No breed yet."; 
     boosterShot = false; 
     if (initialWeight < 0) { 
      System.out.println("Error: Negative weight."); 
      System.exit(0); 
     } else 
      weight = initialWeight; 
    } 

    public void setDog(String newName, int newAge, 
         double newWeight, String newBreed, boolean boosterShot) { 
     name = newName; 
     if ((newAge < 0) || (newWeight < 0)) { 
      System.out.println("Error: Negative age or weight."); 
      System.exit(0); 
     } else { 
      age = newAge; 
      weight = newWeight; 
      breed = newBreed; 
      this.boosterShot = boosterShot; 
     } 
    } 

    public boolean hadBoosterShot() { 
     return this.boosterShot; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String newName) { 
     name = newName; //age and weight are unchanged. 
    } 

    public int getAge() { 
     return age; 
    } 

    public void setAge(int newAge) { 
     if (newAge < 0) { 
      System.out.println("Error: Negative age."); 
      System.exit(0); 
     } else 
      age = newAge; //name and weight are unchanged. 
    } 

    public double getWeight() { 
     return weight; 
    } 

    public void setWeight(double newWeight) { 
     if (newWeight < 0) { 
      System.out.println("Error: Negative weight."); 
      System.exit(0); 
     } else 
      weight = newWeight; //name and age are unchanged. 
    } 

    public String getBreed() { 
     return breed; 
    } 

    public void setBreed(String newBreed) { 
     breed = newBreed; 
    } 

    public boolean getBoosterShot() { 
     return boosterShot; 
    } 

    public void setBoosterShot(boolean boosterShot) { 
     this.boosterShot = boosterShot; 
    } 

    public void writeOutput() { 
     System.out.println("Name: " + name); 
     System.out.println("Age: " + age + " years"); 
     System.out.println("Weight: " + weight + " pounds"); 
     System.out.println("Breed: " + breed); 
     System.out.println("Booster shot status: " + boosterShot); 
    } 
} 

は、私が作成したテスターのプログラムです：：以下

は、私が作成したクラスです

import java.util.Scanner; 

public class DogDemo { 
    public static void main(String[] args) { 
     Dog a = new Dog(); 
     System.out.println("My records on your dog are inaccurate."); 
     System.out.println("Here is what they currently say:"); 
     a.writeOutput(); 

     Scanner keyboard = new Scanner(System.in); 

     System.out.println("Please enter the correct dog name:"); 
     String correctName = keyboard.nextLine(); 
     a.setName(correctName); 

     System.out.println("Please enter correct dog breed:"); 
     String correctBreed = keyboard.nextLine(); 
     a.setBreed(correctBreed); 

     System.out.println("Please enter the correct dog age:"); 
     int correctAge = keyboard.nextInt(); 
     a.setAge(correctAge); 

     System.out.println("Please enter the correct dog weight:"); 
     double correctWeight = keyboard.nextDouble(); 
     a.setWeight(correctWeight); 

     System.out.println("My updated records now say:"); 
     a.writeOutput(); 
    } 
} 

すべてが正常に動作しますが、私は本当にboosterShotへの設定方法で立ち往生していますテスタープログラムではtrueまたはfalseです。

ご協力いただきますようお願い申し上げます。

Answer 1

一つの可能​​性：

a.setBoosterShot（真の）;

Answer 2

これは使用できます。犬がBoostershotか

System.out.println("Is this Boostershot? Yes or No"); 

String ans = keyboard.nextLine(); 

if (ans.equals("Yes")) { 
    a.setBoosterShot(true); 
} else if (ans.equals("No")) { 
    a.setBoosterShot(false); 
} else { 
    System.out.print("Please Input Yes or No"); 
} 

Answer 3

はループのため配置しようとするとあるかどうか尋ねるようにしてください。 5回ループして2年以上経過し、ブースター=偽を犬リストに入れた場合

import java.util.LinkedList;

import java.util.List;

import java.util.Scanner;

パブリッククラスサンプル{

static List<Dog> dogList=new LinkedList<>(); 

public static void main(String[] args) { 

    for(int i=0;i<5;i++){ 

    Dog a = new Dog(); 

    System.out.println("My records on your dog are inaccurate."); 

    System.out.println("Here is what they currently say:"); 

    a.writeOutput(); 

    Scanner keyboard = new Scanner(System.in); 

    System.out.println("Please enter the correct dog name:"); 

    String correctName = keyboard.nextLine(); 

    a.setName(correctName); 

    System.out.println("Please enter correct dog breed:"); 

    String correctBreed = keyboard.nextLine(); 

    a.setBreed(correctBreed); 

    System.out.println("Please enter the correct dog age:"); 

    int correctAge = keyboard.nextInt(); 

    a.setAge(correctAge); 

    System.out.println("Please enter the correct dog weight:"); 

    double correctWeight = keyboard.nextDouble(); 

    a.setWeight(correctWeight); 

    System.out.println("My updated records now say:"); 

    a.writeOutput(); 

    if(a.getAge()>2&&!a.getBoosterShot()){ 

    dogList.add(a); 

    } 

    } 

    System.out.println("\n"); 

    System.out.println("List of all dogs that are over two years old and have not had their booster shots"); 

    for(Dog d:dogList) 

    { 

    System.out.println(".................\n"); 

     System.out.println("Dog Name: "+d.getName()); 

     System.out.println("Dog Breed: "+d.getBreed()); 

     System.out.println("Dog Age: "+d.getAge()); 

    } 

} 

}