Write a program that will input the names, ages and weights of three siblings and display the lightest followed by the youngest
of the siblings. Do the above assignment without using an array of objects. Implementation Create a project asSibling. In the above project, create a class Sibling not containing the main method. In the above project, create a class TestSibling containing the main method.
1 answer:
Answer:
Here is the JAVA program:
Sibling.java class:
import java.util.Scanner; //to accept input from user
public class Sibling { //class name
//private data members of class
private String name; // String type variable to hold the name of sibling
private int age; // int type variable to hold the age of sibling
private int weight; // int type variable to hold the weight of sibling
public Sibling() {} //constructor of class Sibling
public Sibling (String n, int a, int w) { //parameterized constructor
name = n; // refers to name field
age = a; // refers to age field
weight = w; } // refers to weight field
public String getName () { //accessor method to get the current name of sibling
return name; } //returns the name field of the sibling
public int getAge () { //accessor method to get the current age of sibling
return age; } //returns the age field of the sibling
public int getWeight (){ //accessor method to get the current weight of sibling
return weight; } //returns the weight field of the sibling
public void getInput() { //to take input name,age and weight from user
Scanner input = new Scanner(System.in); //Scanner class object
System.out.print("Enter the name: "); //prompts user to enter the name of sibling
name = input.nextLine(); //scans and reads the input name from user
System.out.print("Enter the age: "); //prompts user to enter the age of sibling
age = input.nextInt(); //scans and reads the age from user
System.out.print("Enter the weight: "); //prompts user to enter the weight of sibling
weight = input.nextInt(); } } //scans and reads the input weight from user
Explanation:
Here is the TestSibling class that contains main method:
public class TestSibling { //class name
public static void main (String[] args) { //main method
String name; // to hold name of sibling
int age, weight; // to hold age and weight of sibling
Sibling sib1, sib2, sib3; // objects of Sibling class
sib1 = new Sibling (); // creates object of class Sibling for sibling 1 and calls constructor
sib1.getInput(); // calls getInput method using sib1 object to get the name, age and weight of sibling 1
sib2 = new Sibling (); // creates object of class Sibling for sibling 2 and calls constructor
sib2.getInput(); //calls getInput method using sib2 object to get the name, age and weight of sibling 2
sib3 = new Sibling (); //creates object of class Sibling for sibling 3 and calls constructor
sib3.getInput(); //calls getInput method using sib3 object to get the name, age and weight of sibling 3
Sibling youngest=null, lightest=null; //holds the youngest age and lightest weight of siblings
if (sib1.getAge( )<= sib2.getAge( ) && sib1.getAge( ) <= sib3.getAge( ) ) /*if condition checks if age of sibling 1 is less than or equals to that of sibling 2 and sibling 3, using object of each sibling and getAge method to access age. the logical operator && AND is used so that if condition evaluates to true if sib1 is younger than both sib2 and sib3 */
{ youngest=sib1;} //if the above condition is true then sets sib1 as youngest
else if (sib2.getAge( ) <= sib1.getAge( ) && sib2.getAge( ) <= sib3.getAge( ) ) // else if condition checks if age of sibling 2 is less than or equals to that of sibling 1 and sibling 3
{youngest=sib2;} // if above condition is true then sets sib2 as the youngest
else //if none of the above condition is true then this means that the third has the lowest age
{ youngest=sib3; } //sets sib3 as the youngest
if (sib1.getWeight( ) <= sib2.getWeight( ) && sib1.getWeight( ) <= sib3.getWeight( ) ) //if condition checks if weight of sibling 1 is less than or equals to that of sibling 2 and sibling 3, using object of each sibling and getAge method to access weight of each sibling
{ lightest=sib1; } //if the above condition is true then sets sib1 as having the lightest weight
else if (sib2.getWeight( ) <= sib1.getWeight( ) && sib2.getWeight( ) <= sib3.getWeight( ) ) // else if condition checks if weight of sibling 2 is less than or equals to that of sibling 1 and sibling 3
{lightest=sib2; } //if the above condition is true then sets sib2 as the lightest
else //if none of the above condition is true then this means that the third has the lightest weight
{ lightest=sib3; } //sets sib3 as the lightest
System.out.println("The lightest sibling: " + lightest.getName() +" " + lightest.getAge()+" "+ lightest.getWeight()); } } //calls the getName() getAge() and getWeight() method using object lightest to print the lightest of the siblings
System.out.println("The youngest sibling: " + youngest.getName() +" " + youngest.getAge()+" "+ youngest.getWeight()); //calls the getName() getAge() and getWeight() method using object youngest to print the youngest of the siblings
The screenshot of the output is attached.
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