Java Beginner needs help!!

[Polyy]

For My computer science class I have to create a program on Ready to Program Java that takes in a basketball team and shows the user:

1) Enter in a player : First Name, Last Name
2) Enter in the statistics for a player: average rebounds per game, average points per game, average assists per game
3) Search for a player: Search by their name, and find all the relevant statistics
4) Search by category: Find the Statistical leader for a given category
5) Update a player's statistics
6) Compare two players: who has the higher average for a given statistical category
7) Compare two players: who is the overall better player (how will you figure this out?)

SO far I have this:

c.println ("Welcome,We are the Lakers"); //print a welcome for the user which explains what team we are doing
        c.println("");//add a space inbetween
        while (true)//add a while loop to brng up the menu again after the user is done with one option
        {
            c.println ("Menu");//print menu to the screen to show 
            String[] Options = new String [5]; //make an array
            //array shows the options the user can choose from
            Options [0] = "1) Player Stats"; //shows Player stats as users first option
            Options [1] = "2) Stats Leader"; //shows stats leader as users second option
            Options [2] = "3) Update Player Stats"; //shows update player stats as users second option
            Options [3] = "4) Compare Two Players"; //shows compare two players as users third option
            Options [4] = "5) Main Menu"; //shows menu as users fourth option
            c.println (""); //add a space in between
            // print the options on the screen
            c.println (Options [0]); //print first option to the screen
            c.println (Options [1]); //print second option to the screen
            c.println (Options [2]); //print third option to the screen
            c.println (Options [3]); //print fourth option to the screen
            c.println (Options [4]); //print fifth option to the screen
            c.println (""); //add a space inbetween

            c.println ("Please type in the corresponding number according to the options"); //ask the user to enter in the number for what option they want

            String[] Rebounds = new String [12]; //make an array for rebounds for each player
            Rebounds [0] = "4.90"; //save 4.90 as trevor arizas rebounds
            Rebounds [1] = "5.10"; //save 5.10 as kobe bryant rebounds
            Rebounds [2] = "8.90"; //save 8.90 as andrew bynum rebounds
            Rebounds [3] = "3.40"; //save 3.40 as Jordan Farmer rebounds
            Rebounds [4] = "2.60"; //save 2.60 as Derek Fisher rebounds
            Rebounds [5] = "10.10"; // save 10.10 as Pau Gasol rebounds
            Rebounds [6] = "1.30"; // save 1.30 as Chris Mihm rebounds
            Rebounds [7] = "5.90"; // save 5.90 as Lamar Odom rebounds
            Rebounds [8] = "1.80"; // save 1.80 as Josh Powell rebounds
            Rebounds [9] = "3.30"; // save 3.30 as Vladimir Radmanovic rebounds
            Rebounds [10] = "1.90";  // save 1.90 as Sasha Vujacic rebounds
            Rebounds [11] = ".40"; // save .40 as Luke Walton rebounds

            String[] Points = new String [12]; //make an array that shows the points for each player
            Points [0] = "9.4"; //save 9.4 as trevor arizas points
            Points [1] = "24.4"; //save 24.4 as kobe bryant points
            Points [2] = "9.2"; //save 9.2 as andrew bynum points
            Points [3] = "10.2"; //save 10.2 as Jordan Farmer points
            Points [4] = "10.6"; //save 10.6 as Derek Fisher points
            Points [5] = "17.6"; // save 17.6 as Pau Gasol points
            Points [6] = "4.7";  // save 4.7 as Chris Mihm points
            Points [7] = "9.3"; // save 9.3 as Lamar Odom points
            Points [8] = "2.8"; // save 2.8 as Josh Powell points
            Points [9] = "6.1"; // save 6.1 as Vladimir Radmanovic points
            Points [10] = "5.2"; // save 5.2 as Sasha Vujacic points
            Points [11] = ".6"; // save .6 as Luke Walton points

            String[] Assists = new String [12]; //make an array that shows the assists for each player
            Assists [0] = "1.7"; //save 1.7 as trevor arizas assists
            Assists [1] = "4.0"; //save 4.0 as kobe bryant assists
            Assists [2] = "1.8"; //save 1.8 as andrew bynum assists
            Assists [3] = "2.9"; //save 2.9 as Jordan Farmer assists
            Assists [4] = "2.7"; //save 2.7 as Derek Fisher assists
            Assists [5] = "3.1"; // save 3.1 as Pau Gasol assists
            Assists [6] = ".0"; // save .0 as Chris Mihm assists
            Assists [7] = "2.2"; // save 2.2 as Lamar Odom assists
            Assists [8] = ".0"; // save .0 as Josh Powell assists
            Assists [9] = "1.1"; // save 1.1 as Vladimir Radmanovic assists
            Assists [10] = "1.4"; // save 1.4 as Sasha Vujacic assists
            Assists [11] = ".6"; // save .6 as Luke Walton assists


            int useroptions = c.readInt (); //take in what the user chose as their option
            if (useroptions == 1) //if the options equal 1
            {
                c.println ("You have chosen the Player Stats Option"); //print this to the screen
                c.println (""); //add space inbetween
                c.println ("Please type in the corresponding number of the player to see their stats:"); //ask the user to type in the number of the player they want to see the stats for

                String[] FirstNames = new String [12]; //get an array for the names of the players
                FirstNames [0] = "1) Trevor Ariza"; //save trevor ariza as first name in the array
                FirstNames [1] = "2) Kobe Bryant"; //save kobe bryant as second name in the array
                FirstNames [2] = "3) Andrew Bynum"; //save andrew bynum as third name in the array
                FirstNames [3] = "4) Jordan Farmer"; //save jordan farmer as the fourth name in the array
                FirstNames [4] = "5) Derek Fisher"; //save derek fisher as the fifth name in the array
                FirstNames [5] = "6) Pau Gasol"; //save pau gasol as the sixth name in the array
                FirstNames [6] = "7) Chris Mihm"; //save chris mihm as the seventh name in the array
                FirstNames [7] = "8) Lamar Odom"; //save lamar odom as the eigth name in the array
                FirstNames [8] = "9) Josh Powell"; //save josh powell as the ninth name in the array
                FirstNames [9] = "10) Vladimir Radmanovic"; //save Vladimir Radmanovic as the tenth name in the array
                FirstNames [10] = "11) Sasha Vujacic"; //save sasha vujacic as the eleventh name in the array
                FirstNames [11] = "12) Luke Walton"; //save luke walton as the twelvth name in the array

                c.println (FirstNames [0]); //print the trevor ariza to the screen
                c.println (FirstNames [1]); //print the kobe bryant to the screen
                c.println (FirstNames [2]); //print the Andrew Bynum to the screen
                c.println (FirstNames [3]); //print the Jordan Farmer to the screen
                c.println (FirstNames [4]); //print the Derek Fisher to the screen
                c.println (FirstNames [5]); //print the Pau Gasol to the screen
                c.println (FirstNames [6]); //print the Chris Mihm to the screen
                c.println (FirstNames [7]); //print the Lamar Odom to the screen
                c.println (FirstNames [8]); //print the Josh Powell to the screen
                c.println (FirstNames [9]); //print the Vladimir Radmanovic to the screen
                c.println (FirstNames [10]); //print the Sasha Vujacic to the screen
                c.println (FirstNames [11]); //print the Luke Walton to the screen
                c.println (""); //add space inbetween

                int userschoseplayer = c.readInt (); // declares userschoseplayer as an integer, also reads the integer
                if (userschoseplayer == 1) // if userchoseplayer equals 1
                {
                    c.println ("You have picked Trevor Ariza, His stats are: Rebounds=4.90, Assists=1.7, Points=9.4"); // outputs Trevor Ariza's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 2) //if userchoseplayer equals 2
                {
                    c.println ("You have picked Kobe Bryant, His stats are: Rebounds=5.10, Assists=4.0, Points=24.4"); // outputs Kobe Bryant's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 3) //if userchoseplayer equals 3
                {
                    c.println ("You have picked Andrew Bynum, His stats are: Rebounds=8.90, Assists=1.8, Points=9.2"); // outputs Andrew Bynum's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 4) //if userchoseplayer equals 4
                {
                    c.println ("You have picked Jordan Farmer, His stats are: Rebounds=3.40, Assists=2.9, Points=8.6"); // outputs JOrdan Farmer's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 5) //if userchoseplayer equals 5
                {
                    c.println ("You have picked Derek Fisher, His stats are: Rebounds=2.60, Assists=2.7, Points=10.6"); // outputs Derek FIsher's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 6) //if userchoseplayer equals 6
                {
                    c.println ("You have picked Pau Gasol, His stats are: Rebounds=10.10, Assists=3.1, Points=17.6"); // outputs Pau Gasol's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 7) //if userchoseplayer equals 7
                {
                    c.println ("You have picked Chris Mihm, His stats are: Rebounds=1.30, Assists=.0, Points=4.7"); // outputs Chris Mihm's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 8) //if userchoseplayer equals 8
                {
                    c.println ("You have picked Lamar Odom, His stats are: Rebounds=5.90, Assists=2.2, Points=9.3"); // outputs Lamar Odom's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 9) //if userchoseplayer equals 9
                {
                    c.println ("You have picked Josh Powell, His stats are: Rebounds=1.80, Assists=.0, Points=2.8"); // outputs Josh Powell's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 10) //if userchoseplayer equals 10
                {
                    c.println ("You have picked Vladimir Radmanovic, His stats are: Rebounds=3.30, Assists=1.1, Points=6.1"); // outputs Vladimir Radmanovic's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 11) //if userchoseplayer equals 11
                {
                    c.println ("You have picked Sasha Vujacic, His stats are: Rebounds=1.90, Assists=1.4, Points=5.2"); // outputs Sasha Vujacic's rebounds, assists and points to the screen
                }
                if (userschoseplayer == 12) //if userchoseplayer equals 12
                {
                    c.println ("You have picked Luke Walton, His stats are: Rebounds=.40, Assists=.6, Points=.6"); // outputs Luke Walton's rebounds, assists and points to the screen
                }
            }

            if (useroptions == 2) //if the user chooses 2
            {
                c.println ("You have chosen the Statistical Leader option."); //tells user that they have chosen Statistical leader as their options
                c.println (""); //add a space inbetween
                String[] Stats = new String [3]; //add a new array that shows the user the options
                Stats [0] = "1) Most Rebound"; // save most rebounds as the first user option
                Stats [1] = "2) Most Assists"; //save most assists as the second user option
                Stats [2] = "3) Most Points"; //save most points as the third user option

                c.println (Stats [0]); //print most rebound to the screen
                c.println (Stats [1]); //print most assists to the screen
                c.println (Stats [2]); //print most points to the screen

                c.println (""); //add a space to the screen
                c.println ("Please type in a corresponding number according to the options"); //ask the user to to type in a number depending on what option they want
                int userchosenstats = c.readInt (); //take in an integer from the user and read it
                if (userchosenstats == 1) //if the user chooses the first option
                {
                    c.println ("The player that has the most Rebounds is:"); //show the player that has the most rebounds
                }
                if (userchosenstats == 2) //if the user chooses the second option
                {
                    c.println ("The player that has the most Assists is:"); //show the player that has the most assists
                }
                if (userchosenstats == 3) // if the user chooses the third option
                {
                    c.println ("The player that has the most Points is:"); //show the player that has the most points
                }
            }

            if (useroptions == 3) //if the user chooses the third option
            {
                c.println ("You have chosen the Update option."); //print that they have chosen the update option
                c.println (""); //add a space inbetween
            }

            if (useroptions == 4) //if the user chooses the fourth option
            {
                c.println ("You have chosen to Compare two players."); //print that they have chosen the update option
            }

        }

Number 1 works for me but i have no clue how the user can update the players statistics. I know I have to use arrays to store in the stats for each player but i dont know how to take in the numbers in the array and let the user change them, allowing them to update the array. I also cannot figure out how to find the statistical leader for a given category like assists or rebounds.

[Fubarable]

I see that you have a huge bunch of if's that ignore the data in your arrays, and hard-codes what the output should be based on which number was pressed. What if the data arrays are changed? Why even bother having them.

What I'm driving at is that you should extract information from your data as if you have no knowledge of what the data holds. Let the data arrays do the hard work for you. If the user presses "2" you convert that into an int and display the output with a simple bit of code that uses FirstNames[2], assists[2], etc...

Also, please know that there is a short-cut for declaring arrays that will make your code a bit more readable.

public class Fubar
{
  public static void main(String[] args)
  {
    String[] myStrings = 
    {
      "Monday", "Tuesday", "Wednesday", "Thursday", "Friday"
    };
    
    for (int i = 0; i < myStrings.length; i++)
    {
      System.out.println(myStrings[i]);
    }
  }
}

[Polyy]

How will i do that though?? Can you put that in the code to show me what you are getting at?? Sorry, I am just a beginner, I am only in grade 11 and this is my first time with java. By fixing the arrays will that solve all the problems?? Because the thing I am having the most problem with is allowing the user to update the stats of a palyer.:confused:

[Nicholas Jordan]

Short version is that they are called variables. Fubarable has already dug through the code so I will leave details to Fubarable.

[Fubarable]

One way to do this, not the most elegant, but perhaps the easiest at your stage is to use parallel array as you've set things up. In this situation, the data on each athlete is split among several arrays. The hard part about this is if you change the order of any array, you must do the exact same change in all arrays. Here's a simple example of what I mean:

import java.util.Scanner;

public class Fubar2
{
  static String[] studentNames = {"Abe", "Ben", "Charles"};
  static int[] studentScores = {50, 75, 100};
  
  public static void main(String[] args)
  {
    Scanner scanner = new Scanner(System.in);
    System.out.print("Choose a student from 1 to " + studentNames.length + ": ");
    int choice = scanner.nextInt() - 1; // simplified, no error trapping 
    scanner.nextLine();
    
    System.out.println("You chose student " + studentNames[choice] + 
        " whose score is: " + studentScores[choice]);
  }
}

When a choice is made and placed in the choice variable, it's used to get the necessary data from each array, i.e., studentNames[choice] and studentScores[choice]. Notice that I subtracted 1 from the choice since Java arrays don't start from 1, they start from 0 -- called 0-based arrays.

Notice that I don't use if statements here but I directly get the info from the arrays.