Create a class called SchoolKid that is the base class for children at a school.

ID: 3804510 • Letter: C

Question

Create a class called SchoolKid that is the base class for children at a school. It should have attributes for the child’s name and age, the name of the child’s teacher, and a greeting (String type). It should have appropriate accessor and mutator methods for each of the attributes.

Derive a class ExaggeratingKid from SchoolKid. The new class should override the accessor method for the age, reporting actual age plus 2. It also should override the accessor method for the greeting, returning the child’s greeting concatenated with the words “I am the best”.

Explanation / Answer

SchoolKid.java

public class SchoolKid {
   //Declaring instance variables
   private String childName;
   private int age;
   private String teacherName;
   private String greeting;

   //parameterized constructor
   public SchoolKid(String childName, int age, String teacherName,
           String greeting) {
       this.childName = childName;
       setAge(age);
       this.teacherName = teacherName;
       setGreeting(greeting);
   }

   //Setters and getters
   public String getChildName() {
       return childName;
   }

   public void setChildName(String childName) {
       this.childName = childName;
   }

   public int getAge() {
       return age;
   }

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

   public String getTeacherName() {
       return teacherName;
   }

   public void setTeacherName(String teacherName) {
       this.teacherName = teacherName;
   }

   public String getGreeting() {
       return greeting;
   }

   public void setGreeting(String greeting) {
       this.greeting = greeting;
   }

   //toString method is used to display the contents of an object inside it
   @Override
   public String toString() {
       return "Child Name=" + childName + ", Age=" + age
               + ", Teacher Name=" + teacherName + ", greeting=" + greeting;
   }

}

________________

ExaggeratingKid.java

public class ExaggeratingKid extends SchoolKid {

   public ExaggeratingKid(String childName, int age, String teacherName,
           String greeting) {
       super(childName, age, teacherName, greeting);

   }

   @Override
   public void setAge(int age) {

       super.setAge(age+2);
   }

@Override
public void setGreeting(String greeting) {

super.setGreeting(greeting+"I am the best ");
}

   //toString method is used to display the contents of an object inside it
   @Override
   public String toString() {
       return super.toString();
   }

}

___________________

Test.java

public class Test {

   public static void main(String[] args) {
       //Creating an SchoolKid class object by passing arguments
   SchoolKid sk=new SchoolKid("Williams",21,"James","Hello!.");

   //Displaying the contents of school object
   System.out.println("SchoolKid Info: "+sk.toString());

   //Creating an ExaggeratingKid class object by passing arguments
   ExaggeratingKid esk=new ExaggeratingKid("Johnson", 22, "Sachin", "Hi!.");

   //Displaying the contents of school object
           System.out.println("ExaggeratingKid Info: "+esk.toString());
   }

}

_________________

Output:

SchoolKid Info:
Child Name=Williams, Age=21, Teacher Name=James, greeting=Hello!.
ExaggeratingKid Info:
Child Name=Johnson, Age=24, Teacher Name=Sachin, greeting=Hi!.I am the best

___________Thank You

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Create a class called SchoolKid that is the base class for children at a school.

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