Thread: New help using Vector class

New to using Dynamic Data Structures, Vector classes, and ArrayLists.
-I have a read in file named Student.dat
- I have a class called Student
-I have a class with the main method called VectorTest

I am wondering if I declared and initialized my new vector called list correctly. (1A)
I also am wondering if created a student using data from the line read corrected( almost know this is wrong it also saying I need to add it to the list).
I also am have trouble REPLACING the first student on the list with "me" which is a new object of student. ( I think i need to use the "set" method, but I'm not quite sure how to do it). Any help with this would be appreciated.

Here is my code.

VectorTest:

 
import java.io.*;
import java.util.*;
/**
 *To use a vector as a data structure to store a phone book
 *Written by Diane Christie for lab use
 *March 9, 2002
 */
public class VectorTest
{
	public static void main(String [] args)throws IOException
	{
		// DECLARE AND INSTANTIATE A VECTOR CALLED LIST OF SIZE 5
		// TASK 1A
		Vector list = new Vector(5);
 
		String filename = "student.dat";
		int comma;
		Student currentStudent;
		int count = 0;
 
		BufferedReader instream = new BufferedReader(new FileReader(filename));
		String line = instream.readLine();
		while (line != null)
		{
			//String processing, pull apart the line containing
			// lastName, firstName, phoneNumber
			// trim() will remove leading spaces from strings
			comma = line.indexOf(',');
			String last = line.substring(0, comma).trim();
			line = line.substring(comma + 1, line.length());
			comma = line.indexOf(',');
			String first = line.substring(0, comma).trim();
			String phone = line.substring(comma + 1, line.length()).trim();
 
			//CREATE A STUDENT USING DATA FROM THE LINE READ IN
			//ADD IT TO THE LIST
			//TASK 1B
 
			Student s1 = new Student(last,first,phone);
 
			line = instream.readLine();
		}
		instream.close();
 
		//CHANGE INFO IN STUDENT CONSTRUCTOR TO HAVE YOUR INFORMATION
		//TASK 1C
		Student me = new Student("Wollan", "Jake", "703-6419");
 
 
		//Task 1D REPLACE THE FIRST STUDENT ON THE LIST WITH me
		//Task 1E Remove the fourth student on the list.
		//Task 1F Add Charlie Brown 123-4567 to be the sixth student on the list.
 
 
 
		System.out.println("Output for the Vector class");
		//WRITE A FOR LOOP TO PRINT OUT THE LIST TO THE CONSOLE
	}
}

Student.Java

 
public class Student
{
	private String lastName;
	private String firstName;
	private String phoneNumber;
 
	/**
	 * Creates a student using a last name, first name, and phone number
	 * @param last student's last name
	 * @param first student's first name
	 * @param phone student's phone number
	 */
	public Student(String last, String first, String phone)
	{
		lastName = last;
		firstName = first;
		phoneNumber = phone;
	}
 
	/**
	 * Returns student's last name
	 * @return student's last name
	 */
	public String getLastName()
	{
		return lastName;
	}
	/**
	 * Returns student's first name
	 * @return student's first name
	 */
	public String getFirstName()
	{
		return firstName;
	}
	/**
	 * Returns student's phone number
	 * @return student's phone number
	 */
	public String getPhoneNumber()
	{
		return phoneNumber;
	}
	/**
	 * Returns a string of the student's entry for the phone book
	 * @return the student's full name and phone number
	 */
	public String toString()
	{
		return phoneNumber + "    " + firstName + " " + lastName;
	}
}

This the orginal Student.dat (list of students in a note pad file)

Smith, John, 232-1234
Doe, Jane, 232-2345
Hall, Monty, 232-0987
Ketchum, Hank, 232-6789
Jones, Ed, 232-1458
Johnson, Tony, 232-0567
Jones, Amanda, 232-4563
Enockson, Liz, 232-1238

--- Update ---

is this close? list.add(0,me); ?

Okay, I tried and this is what I now have.

public class VectorTest
{
	public static void main(String [] args)throws IOException
	{
		// DECLARE AND INSTANTIATE A VECTOR CALLED LIST OF SIZE 5
		// TASK 1A
		Vector list = new Vector(5);
 
		String filename = "student.dat";
		int comma;
		Student currentStudent;
		int count = 0;
 
		BufferedReader instream = new BufferedReader(new FileReader(filename));
		String line = instream.readLine();
		while (line != null)
		{
			//String processing, pull apart the line containing
			// lastName, firstName, phoneNumber
			// trim() will remove leading spaces from strings
			comma = line.indexOf(',');
			String last = line.substring(0, comma).trim();
			line = line.substring(comma + 1, line.length());
			comma = line.indexOf(',');
			String first = line.substring(0, comma).trim();
			String phone = line.substring(comma + 1, line.length()).trim();
 
			//CREATE A STUDENT USING DATA FROM THE LINE READ IN
			//ADD IT TO THE LIST
			//TASK 1B
 
			Student s1 = new Student("Brown","Charlie","123-4567");
 
 
			line = instream.readLine();
		}
		instream.close();
 
		//CHANGE INFO IN STUDENT CONSTRUCTOR TO HAVE YOUR INFORMATION
		//TASK 1C
		Student me = new Student("Wollan", "Jake", "703-6419");
 
		list.set(0,me);
		list.removeElementAt(3);
		list.add(5,s1);
 
 
		//Task 1D REPLACE THE FIRST STUDENT ON THE LIST WITH me
		//Task 1E Remove the fourth student on the list.
		//Task 1F Add Charlie Brown 123-4567 to be the sixth student on the list.
 
 
 
		System.out.println("Output for the Vector class");
		//WRITE A FOR LOOP TO PRINT OUT THE LIST TO THE CONSOLE
 
		 for(int index=0; index < list.size(); index++)
		 System.out.println(list.get(index));
		}
	}

With errors on my set and add methods as well as when I construct my new vector called list.
It says " vector is raw type" and I need to use "<>"
Same thing for my add method.
my set method says my s1 object cant be resolved to a variable.

Errors:
Vector list = new Vector(5);
Vector is a raw type. References to generic type Vector<E> should be parameterized

list.set(0,me);
Type safety: The method set(int, Object) belongs to the raw type Vector. References to generic type Vector<E> should be parameterized

list.add(5,s1);
s1 cannot be resolved to a variable

No it is not. I'm putting the statements where they are istructed to put (//1A 1C ect). I tried putting the add s1 in the same scope, but then i get a tons of errors.

I'm trying, I really I am I really want to learn this. Can you maybe throw me a bone? I put s1 in the same scope. getting no errors on that. Now I am just getting a out of bounds error.

 
public class VectorTest
{
 
	public static void main(String [] args)throws IOException
	{
		// DECLARE AND INSTANTIATE A VECTOR CALLED LIST OF SIZE 5
		// TASK 1A
 
		Vector <Student> list = new Vector <Student>(5);
 
		String filename = "student.dat";
		int comma;
		Student currentStudent;
		int count = 0;
 
 
		BufferedReader instream = new BufferedReader(new FileReader(filename));
		String line = instream.readLine();
		while (line != null)
		{
			//String processing, pull apart the line containing
			// lastName, firstName, phoneNumber
			// trim() will remove leading spaces from strings
			comma = line.indexOf(',');
			String last = line.substring(0, comma).trim();
			line = line.substring(comma + 1, line.length());
			comma = line.indexOf(',');
			String first = line.substring(0, comma).trim();
			String phone = line.substring(comma + 1, line.length()).trim();
 
			//CREATE A STUDENT USING DATA FROM THE LINE READ IN
			//ADD IT TO THE LIST
			//TASK 1B
 
			 //Student s1 = new Student("Charlie","brown","123-4567");
 
			//currentStudent = s1;
 
			line = instream.readLine();
		}
		instream.close();
 
		//CHANGE INFO IN STUDENT CONSTRUCTOR TO HAVE YOUR INFORMATION
		//TASK 1C
 
 
		Student me = new Student("Wollan", "Jake", "703-6419");
		Student s1 = new Student("Charlie","Brown","123-4567");
		list.set(0,me);
		list.removeElementAt(3);
		list.add(5,s1);
 
 
 
		//Task 1D REPLACE THE FIRST STUDENT ON THE LIST WITH me
		//Task 1E Remove the fourth student on the list.
		//Task 1F Add Charlie Brown 123-4567 to be the sixth student on the list.
 
 
 
		System.out.println("Output for the Vector class");
		//WRITE A FOR LOOP TO PRINT OUT THE LIST TO THE CONSOLE
 
		 for(int index=0; index < list.size(); index++)
		 System.out.println(list.get(index));
 
		}
	}

out of bounds exception on my set(me,0).

8 original elements. removed one, and then added one. so 8. Put doesn't the vector just create more space automatically?