For this assignment you will write a Java class that manages an array list of SimpleStudent objects. The SimpleStudent class is supplied; make no changes to this class.

Begin by downloading the ArrayListSimpleStudent zip file and extracting the SimpleStudent class. After examining this class, add to the project a program containing main() that manages an array list of SimpleStudent objects. Your program will:

• Ask the user the number of students to store.
• Set up an array list to hold this number of SimpleStudent objects.
• Allow the user to enter student information and store the associated SimpleStudent objects in the array list.
• After the students have been entered into the list, display the contents of the list:
  • This helps the programmer in debugging the code.
• Ask the user for a student to search for in the list.
• Search the list to determine if this student is in the list:
  • If so, state this and give the index of the first occurrence of the student in the list.
    • If you find the student, you do not need to search further; there is no requirement to determine how many times the student appears in the list.
  • If not, state this.

Notes/Hints:

• One way to simplify main() is to write a method in the file with main() that allows the user to enter a students data, sets up a SimpleStudent object and returns this object to main().
  • A good name for this method would be enterSimpleStudent().
  • If you write a method of this type, be sure to set up a Scanner object in the method for use within the method. Dont try to share the Scanner object in main() with another method; this leads to many problems.

A run of the program might look like the following:

Number of students: 4

Enter student information:

Student #1:

Name: Frank

Age: 21

Student #2:

Name: John

Age: 23

Student #3:

Name: Sally

Age: 21

Student #4:

Name: Bill

Age: 23

Students: [[Frank; 21], [John; 23], [Sally; 21], [Bill; 23]]

Enter student to search for in list:

Name: Sally

Age: 21

[Sally; 21] is in the list at index 2.

// SimpleStudent.java // Class to hold student's last name and age.

public class SimpleStudent { // Constructor. public SimpleStudent(String last, int years) { lastName = last; age = years; } // SimpleStudent's get() methods. public String getLastName() { return lastName; } public int getAge() { return age; } // SimpleStudent's set() methods. public void setLastName(String last) { lastName = last; } public void setAge(int years) { age = years; } // SimpleStudent's toString() method. public String toString() { String stdt = ""; stdt = "[" + lastName + "; " + age + "]"; return stdt; } // SimpleStudent's equals() method. // Compares both name and age. public boolean equals(Object obj) { SimpleStudent s2 = (SimpleStudent)obj; boolean flag = (lastName.equals(s2.lastName)) && (age == s2.age); return flag; }

// Instance variables. private String lastName; private int age; }