i need help [ Data stucture] Java

[Kiratiphan]

my project is sort score of Student
using Linked List and sort algorithm
can i coding loop for input from user
and save value to node in linked list
and export or sort value like this ?
Thanks for help or discuss or give any idea
(any code is idea from this blog)
warning before post prob from this web (Curly braces { } may only be used when posting code.)

package javaapplication19;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import static javaapplication19.LinkedList.addNode;
import static javaapplication19.LinkedList.printLinkedList;

public class JavaApplication19

        public static void main(String [] args) throws IOException {
    BufferedReader input = new BufferedReader(
            new InputStreamReader(System.in));
    Node head = null;
    String name;
    double score;
            int counter=1;
    System.out.print("Insert number of student : ");
    int nStudent = Integer.valueOf(input.readLine());
    for(int i=0;i<nStudent;i++) {
                    System.out.println("Number "+counter+".");
        System.out.print("Student Score : "); 
        score = Double.parseDouble(input.readLine());
        head = addNode(head,score);
                    counter++;
    }

    printLinkedList(head);

}

////////////////////////////////////////////////////////////////

package javaapplication19;

public class LinkedList

public static Node addNode(Node head,double point) {
    Node newNode = new Node();
    newNode.point = point;
    newNode.next = null;

    Node trav1, trav2;
    trav1 = trav2 = head;
    while(trav1 != null) {
        trav2 = trav1; 
        trav1 = trav1.next;
    }
    if(trav1 != trav2) trav2.next = newNode;
    else head = newNode;

    return head;
}

public static void printLinkedList(Node head) {
    Node trav = head;
    int count=1;
    while(trav != null) {

                    System.out.println("=============================");
                    System.out.println("No."+count+"");
        System.out.println("Score : "+trav.point);
        System.out.println("=============================");
        count++;
        trav = trav.next;
    }
}

private LinkedList() {
}

//////////////////////////////////////////////////////////////

package javaapplication19;

import static java.util.Collections.sort;

public class Node

public double point;
public Node next;

public Node() {

    this.point = 0.0;
    this.next = null;
}

public Node(double point, Node next) {
    this.point = point;
    this.next = next;
}