Need help, I am terrible with Java, can someone help.

Question

Please can someone help me with this program. I am in a JAVA programming class and I am having a heck of a time. I am still having a problem with the basic concepts of JAVA but the teacher continues to give us difficult assignments with out any help. Here is the assignment:
Write a class named 'Player' that has two attributes, 'name' (which has to be a 'Sting') and 'rating' (which has to be a 'int'). Then write an application class named "PlayerRating" that first creates an array consisting of 5 player objects, then display the list three times; first unsorted, then sorted by Name and finally sorted by rating.
Must use the Bubble Sort Program and do NOT use Array.sort.
Example output:
Unsorted
Name: Rating:
Mickey Mantle 5
Ty Cobb 3
Babe Ruth 4
Pete Rose 3
Sammy Sosa 1
Sorted by Name
Name: Rating:
Babe Ruth 4
Mickey Mantle 5
Pete Rose 3
Sammy Sosa 1
Ty Cobb 3
Sorted by Rating
Name: Rating:
Sammy Sosa 1
Pete Rose 3
Ty Cobb 3
Babe Ruth 4
Mickey Mantle 5
Here is what I have and it is not much, cause I am so lost:
1 import java.io.*;
2 import javax.swing.*;
3 import java.text.*;
4 import java.lang.*;//String[][];
5 import java.util.*; //ArrayList;
6
7
8 public class Player
9 {
10 public static void main (String [][]args)
11 {
12
13 int maxSize = 100; //array size
14 // String[][] s = new String[100][100]; //Default values: null
15 boolean [] b = new boolean[4]; //default values: false
16 int[][] i = new int[10][10]; //default values: 0
17
18
19 PlayerRating arr; //reference to array
20 //arr = new PlayerRating(maxSize);
21 Sting player[]={"Mickey Mantle 5","Ty Cobb 3"
22 ,"Babe Ruth 4","Pete Rose 3","Sammy Sosa 1"};
23
24
25 }
26 }
Here is all I have on the second program:
public class PlayerRating
public void PlayerRating (int Max)
int[][] i = new int[10][10];
Please help I am totally lost.

Answer 1

You repeat code, you should do a generic bubble sort with comparators, or declare class as Comparable. You can see how String class is Comparable, furthermore it has a final static Comparator for CASE_INTENSENSITIVE_ORDER.
class User implements Comparable<User>{
  public static final java.util.Comparator<Cliente> RATING_COMPARATION=new java.util.Comparator<Cliente>(){
    public int compare(User u1,User u2){
           int comp=u1.rating-u2.rating;
           return comp==0?u1.name.compareTo(u2.name):comp;
     private String name;
     private int rating;
     public User(String name, int rating){
          setName(name);
          setRating(rating);
     public String getName(){
          return name;
     public void setName(String name){
          this.name = name;
     public int getRating(){
          return rating;
     public void setRating(int rating){
          this.rating = rating;
        // Compare users first by name and last by rating;
        public int compareTo(User anotherUser){
           int comp=name.compareTo(anotherUser.name);
           return comp==0?rating-anotherUser.rating:comp;
         public void equals(Object o){
          if(this==o)
            return true;
          if(o instanceof User){}
             User anotherUser=(User)o;
             return name.equals(anotherUser.name)&&rating==anotherUser.rating;
          return false;
           public int hashCode(){
              return name.hashCode()+rating<<16;
public class Sorting{
     public <E extends Comparable<E>>static void bubleSort(E[] arr){
          for(int i = 0; i < arr.length - 1; i++){
               for(int j = arr.length - 1; j > i; j--){
                    if(arr[j].compareTo(arr[j - 1])<0)
                                 swap(arr,j,j-1);
     public static<E> void bubleSort(E[] arr,Comparator<E> cmp){
          for(int i = 0; i < arr.length - 1; i++){
               for(int j = arr.length - 1; j > i; j--){
                    if(cmp.compare(arr[j],arr[j-1]) < 0)
                                  swap(arr,j,j-1);
        private static void swap(Object[] arr,int x,int y){
           Object tmp=arr[x];
           arr[x]=arr[y];
           arr[y]=tmp;
     public static void main(String[] args){
          User[] arr = new User[5];
          arr[0] = new User("Mickey Mantle", 5);
          arr[1] = new User("Ty Cobb", 3);
          arr[2] = new User("Babe Ruth", 4);
          arr[3] = new User("Pete Rose", 3);
          arr[4] = new User("Sammy Sosa", 1);
          System.out.println("Sorting by Name : ");
          bubleSort(arr)
          System.out.println(Arrays.toString(arr));
          System.out.println("Sorting by Rating : ");
          bubleSort(arr,User.RATING_COMPARATION);
          System.out.println(Arrays.toString(arr));
}