Sorting arrays using Comparable

I'm creating a java program that will ask for 5 players' points, rebounds, steals, etc then compute their average. After, I should short the 5 players' weighted average according to highest to lowest using COMPARABLE. I already made a code and it errors when its in the sorting part. Help me debug it. Thanks!

import java.lang.Comparable; import java.lang.ClassCastException;   public class SortTest implements Comparable<SortTest>{ private String name; private int rebound; private int block; private int steal; private int points; private int assist; private int turnover; private double average;   //constructor public SortTest(){ name = ""; rebound = 0; block = 0; steal = 0; points = 0; assist = 0; turnover = 0; average = 0; }       public void setName(String newName) { name = newName; }   public String getName() { return name; }   public void setRebound(int newRebound) { rebound = newRebound; }   public int getRebound() { return rebound; }   public void setBlock(int newBlock) { block = newBlock; }   public int getBlock() { return block; }   public void setSteal(int newSteal) { steal = newSteal; }   public int getSteal() { return steal; }   public void setPoints(int newPoints) { points = newPoints; }   public int getPoints() { return points; }   public void setAssist(int newAssist) { assist = newAssist; }   public int getAssist() { return assist; }   public void setTurnover(int newTurnover) { turnover = newTurnover; }   public int getTurnover() { return turnover; }   public void setAverage(double rebound, double block, double steal, double points, double assist, double turnover){ average = points*3/10 + assist*2/10 + rebound*2/10 + steal*1/10 + block*1/10 + (turnover+1)*1/10; }   public double getAverage(){ return average; }   public String toString(){ String str; str = getName() + ": " + getAverage(); return str; }   /*public int compareTo(SortTest comparePlayer) { double compareScore = ((SortTest) comparePlayer).getAverage();  return (int) (average - compareScore); }*/       public int compareTo(SortTest otherPlayer) {   double compareScore = ((SortTest) otherPlayer).getAverage();  if(this.getAverage() > compareScore){ return 1; } else if (this.getAverage() < compareScore){ return -1; } else return 0; }   }



import java.util.Scanner; import java.util.Arrays;   public class BasketballPlayer {   public static void main(String[] args){ Scanner reader = new Scanner(System.in); SortTest[] player = new SortTest[6];   System.out.println("********BASKETBALL SCORE SHEET********");   for(int playerIndex=0, i=1; playerIndex < 5; playerIndex++){   int[] attribute = new int[6]; String tempName;   System.out.println("Enter Player-" + i++ + " information:"); player[playerIndex] = new SortTest(); System.out.print("NAME: "); tempName = reader.next(); player[playerIndex].setName(tempName); System.out.print("POINT/S: "); attribute[0] = reader.nextInt(); player[playerIndex].setPoints(attribute[0]); System.out.print("ASSIST/S: "); attribute[1] = reader.nextInt(); player[playerIndex].setAssist(attribute[1]); System.out.print("REBOUND/S: "); attribute[2] = reader.nextInt(); player[playerIndex].setRebound(attribute[2]); System.out.print("STEAL/S: "); attribute[3] = reader.nextInt(); player[playerIndex].setSteal(attribute[3]); System.out.print("BLOCK/S: "); attribute[4] = reader.nextInt(); player[playerIndex].setBlock(attribute[4]); System.out.print("TURNOVER/S: "); attribute[5] = reader.nextInt(); player[playerIndex].setTurnover(attribute[5]); player[playerIndex].setAverage(attribute[0], attribute[1], attribute[2],  attribute[3], attribute[4], attribute[5]); }   Arrays.sort(player);   for(int playerIndex=0; playerIndex < 5; playerIndex++){ SortTest playerPrint = player[playerIndex]; System.out.println(playerPrint.toString()); }     }   }  

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