Java homework looking for help 1Write the class header and the instance data var

Question

Java homework looking for help

1Write the class header and the instance data variables for the Dog class.

2A dog is described by name, age, and breed (stored as a String).

3Write a constructor for the Dog class that initializes a dog object by specifying all information.

4Write accessor and mutator (getter and setter) methods. Include validity checking where appropriate.

5Write a toString method to return a text representation of the dog that includes the name, age, and breed.

6Write an equals method. Two Dog objects are considered the same (logically equivalent) if they have the same name, age, and breed.

7Is there anything else you need to add to your class so that it will compile? If so, include that here.

Explanation / Answer

Dog.java

public class Dog {
   //Declaring instance variables
   private String name;
   private String breed;
   private int age;

   //Parameterized constructor
   public Dog(String name, String breed, int age) {
       super();
       this.name = name;
       this.breed = breed;
       this.age = age;
   }

   // Copy constructor
   public Dog(Dog d) {
       this.name = d.name;
       this.breed = d.breed;
       this.age = d.age;
   }
   //getters and setters
   public String getName() {
       return name;
   }

   public void setName(String name) {
       this.name = name;
   }

   public String getBreed() {
       return breed;
   }

   public void setBreed(String breed) {
       this.breed = breed;
   }

   public int getAge() {
       return age;
   }

   public void setAge(int age) {
       this.age = age;
   }

   //this method compares two dog objects
   public boolean equals(Dog d) {

       if (age != d.age)
           return false;
       if (breed == null) {
           if (d.breed != null)
               return false;
       } else if (!breed.equals(d.breed))
           return false;
       if (name == null) {
           if (d.name != null)
               return false;
       } else if (!name.equals(d.name))
           return false;
       return true;
   }

   //toString method is used to display the contents of an object inside it
   @Override
   public String toString() {
       return "Dog [name=" + name + ", breed=" + breed + ", age=" + age +"]";

   }
  

}

______________________

Driver.java

public class Driver {

   public static void main(String[] args) {
       //Creating the Dog class object by passing values as arguments
       Dog scooby =new Dog("Scooby","Great Dane",7);
      
       System.out.println("---Displaying scooby Dog Object---");
       System.out.println(scooby.toString());
       //Creating the Dog class object by using the copy constructor
       Dog myDog=new Dog(scooby);
       System.out.println("---Displaying myDog Dog Object---");
       System.out.println(myDog.toString());
       System.out.println(" ----Comparing scooby and myDog Dog objects----");
      
       //comparing the two dog class objects
       boolean bool=scooby.equals(myDog);
       if(bool)
           System.out.println("Both dogs are same");
       else
           System.out.println("Both dogs are different");

       //calling the setters
       myDog.setName("Toby");
       myDog.setBreed("Terrier");
       myDog.setAge(2);
      
       System.out.println("---Displaying scooby Dog Object---");
       System.out.println(scooby.toString());
       System.out.println("---Displaying myDog Dog Object---");
       System.out.println(myDog.toString());
      
       System.out.println(" ----Comparing scooby and myDog Dog objects----");
       //comparing the two dog class objects
       bool=scooby.equals(myDog);
       if(bool)
           System.out.println("Both dogs are same");
       else
           System.out.println("Both dogs are different");
      
      
   }
}

__________________

Output:

---Displaying scooby Dog Object---
Dog [name=Scooby, breed=Great Dane, age=7]
---Displaying myDog Dog Object---
Dog [name=Scooby, breed=Great Dane, age=7]

----Comparing scooby and myDog Dog objects----
Both dogs are same
---Displaying scooby Dog Object---
Dog [name=Scooby, breed=Great Dane, age=7]
---Displaying myDog Dog Object---
Dog [name=Toby, breed=Terrier, age=2]

----Comparing scooby and myDog Dog objects----
Both dogs are different

_____________Plz Could you give thump up .Thank You

Related Questions

Navigate

• Browse (All)
• Browse J
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.