Question

Required Tasks:

1. In Eclipse, create a Java Project as CS-176L-Assign5.
2. Create 3 Java Classes each in its own file Student.java, StudentList.java, and Assign5Test.java.
3. Copy your code from Assignment 4 into the Student.java and StudentList.java Classes. Assign5Test.java should contain the main method.
4. Modify StudentList.java to use an ArrayList instead of an array. You can find the basics of ArrayList here: https://www.w3schools.com/java/java_arraylist.asp
5. In StudentList.java, create two new public methods:
   1. The addStudent method should have one parameter of type Student and should add the given Student to the StudentList.
   2. The removeStudent method should have one parameter of type String. The String is the email of the student to be removed from the StudentList.
6. In Assign5Test.java do the following:
   1. Create a new StudentList containing 3 students.
   2. Print the info of all the Students in the StudentList using the getAllStudentInfo method.
   3. Remove one Student from the StudentList using the removeStudent method.
   4. Add two new Students to the StudentList using the addStudent method.
   5. Print the info of all the Students in the StudentList using the getAllStudentInfo method. Notice that one Student was removed and two were added.
7. Code must compile and run without warnings or errors.
8. Final output should look something like the following:

Name: [Abdulmuhsin J.Al-Kandari], Email: [[email protected]], Major: [SE], GraduationYear: [2017]

Name: [Justin R. Schlemm], Email: [[email protected]], Major: [SE], GraduationYear: [2016]

Name: [Mary F. Menges], Email: [[email protected]], Major: [SE], GraduationYear: [2017]

Name: [Abdulmuhsin J.Al-Kandari], Email: [[email protected]], Major: [SE], GraduationYear: [2017]

Name: [Justin R. Schlemm], Email: [[email protected]], Major: [SE], GraduationYear: [2016]

Name: [Nicholas-Jason R. Roache], Email: [[email protected]], Major: [CS], GraduationYear: [2017]

Name: [Taylor J. Klodowski], Email: [[email protected]], Major: [SE], GraduationYear: [2016]

Answer 1

Implementation of above program in JAVA:

import java.util.ArrayList;
import java.util.Scanner;

//class Assign5Test.java
public class Assign5Test {

//   Scanner class declared as Static
   static Scanner s= new Scanner(System.in);
  
//   driver method
   public static void main(String[] args) {
  
       StudentList sl = new StudentList();
      
       System.out.println("Add 3 Students :");
       System.out.println();
      
       add(sl);
       add(sl);
       add(sl);
       System.out.println();
       print(sl.list);
       System.out.println();
       System.out.println("Remove 1 Student : ");
       remove(sl);
       System.out.println();
       System.out.println("Add 2 Students :");
       System.out.println();
       add(sl);
       add(sl);
       System.out.println();
       print(sl.list);

   }
  
//   print the list by using the object of StudentList
//   and getters of Student class
   public static void print(ArrayList<Student1> list) {
      
       System.out.println("-------------------List of Students-----------------");
       System.out.println();
      
      
       for(int i=0;i<list.size();i++) {
          
           Student1 st= list.get(i);
          
   System.out.println("Name: ["+st.getname()+"], Email: ["+st.getemail()+"], Major: ["+st.getmajor()+"], Graduation Year: ["+st.getyear()+"]");      
       }
   }
  
//   user enter input and call add method in StudentList class
   public static void add(StudentList sl) {
      
      
       System.out.print("Enter the name of Student : ");
       String name=s.next();
       s.nextLine();
       System.out.print("Enter the Email of Student : ");
       String email=s.next();
       s.nextLine();
       System.out.print("Enter the major of Student : ");
       String major=s.next();
       s.nextLine();
       System.out.print("Enter the Graduation-Year of Student : ");
       String year=s.next();
       s.nextLine();
      
       Student1 st= new Student1(name,email,major,year);
      
         
       sl.addstudent(st);
   }
  
//   user enter input and call remove method in StudentList class
   public static void remove(StudentList sl) {
      
       System.out.print("Enter the Email of Student you want to remove : ");
       String email=s.next();
         
       sl.remove(email);
   }

}

//----------------------------------------------------

// class StudentList.java
class StudentList{
  
//   Arraylist
   ArrayList<Student1> list= new ArrayList<Student1>();
  
//   add Student in arrayList
   public void addstudent(Student1 st) {
      
      
       list.add(st);
       System.out.println("Student Added!!!");
       System.out.println();
   }
  
//       remove Student in arrayList
   public void remove(String email) {
      
//       traverse whole list and try to found mail if dound then remove
//       else print "Email not found..."
       for(int i=0;i<list.size();i++) {
          
           Student1 st=list.get(i);
          
           if(st.getemail().equals(email)) {
               list.remove(i);
               System.out.println("Student removed!!!");
               return;
           }
          
       }
      
       System.out.println("Email not found...");
      
   }
  
  
  
}

//--------------------------------------------------------

//class Student1.java
class Student1{
  
   String name;
   String email;
   String major;
   String year;
  
//   Constructor
public Student1(String name, String email ,String major, String year) {
   this.name=name;
   this.email=email;
   this.major=major;
   this.year=year;
  
}
  
// getters Methods
public String getname() {
   return name;
}
  
public String getemail() {
   return email;
}
public String getmajor() {
   return major;
}
public String getyear() {
   return year;
}
  
  
}

SAMPLE OUTPUTS;

If you have any doubt regarding this question ask me in comments

//THANK YOU:-)