Question

Question 3

alues, and a get method for each of the member variables. The class implements the ne member variables to the given Comparable interface, and compares two candidates based on their numbers of votes. 2. Designing a class named VotingMachine that contains a collection of candidates and the following methods: . addCandidate (String name): Add a candidate of a given name to the collection of candidates. This method throws an exception if a candidate of the given name already exists in the collection. castVote(String name): Cast a vote to the candidate of the given the name. This method throws an exception if there is no candidate of the name in the collection. Question 3 Implement a class named MyArrayList that extends the java.util.ArrayList. The class MyArrayList overrides the toString method in the following way: it returns a string repre- sentation of the elements in the collection in the format (ao, ai,. ..,an-1), where ai (i=0,..,n-1) is the string representation of the element at index i. Question 4 file, named "src.txt", contains an unspecified number of integers, each occupying a line. Write a program that copies the integers into another file, named "dest.txt" with the lines reversed. For example, if "src.txt" has the following lines

Answer 1

suppose we have two classes here "student" and "demo". student class has only two properties student name and student age. as you can see that we have overridden the toString() method in student class itself. in the demo class we are storing the student object in ArrayList and then we iterated the ArraayList using the advance for loop.

student class

package beginnersbook.com;
public class Student 
{
    private String studentname;
    private int studentage;
    Student(String name, int age)
    {
         this.studentname=name;
         this.studentage=age;
    }
    @Override
    public String toString() {
       return "Name is: "+this.studentname+" & Age is: "+this.studentage;
    }
}

demo class

package beginnersbook.com;
import java.util.ArrayList;
public class Demo
{
     public static void main(String [] args)
     {
          ArrayList<Student> al= new ArrayList<Student>();
          al.add(new Student("Chaitanya", 26));
          al.add(new Student("Ajeet", 25));
          al.add(new Student("Steve", 55));
          al.add(new Student("Mary", 18));
          al.add(new Student("Dawn", 22));
          for (Student tmp: al){
              System.out.println(tmp);
          }
     }
}

in place of these names you can easily put the array to store it in the values beween 0,1,2,...n-1