Question

Create a base class that describes a baseball player. A baseball player’s attributes are:

• player name
• player number

A pitcher has all the attributes of a baseball player but also has two other attributes:

• number of innings pitched
• number of earned runs.

All pitchers have an earned run average which is calculated as : (Earned runs / innings pitched ) x 9

A batter has all of the attributes of a baseball player plus two other attributes:

• number of at bats
• number of hits.

The batting average is then calculated as: Hits / at bats

Step 1- Create Player class, test all methods and make sure all is working

Step2- A Pitcher IS A Player. Create Pitcher class, test all methods and make sure all is working

Step 3- A Batter IS A Player. Create Batter class, test all methods and make sure all is working

The output should look like :

MENU
1 – Pitcher / 2 – Batter / 3 - Quit
Select player type: 2

Enter batter name: Hunter Pence
Enter player number: 08
Enter at bats: 38
Enter hits: 11

Batter Hunter　Pence, Batting Average 0.289  //use toString

There should be a total of 4 java files.

Answer 1

Answer: Hey dear student finds the solution of your query, if you have any doubt feel free to ask. Thanks!!

Copy to code: this code has four classes, Super class and two driver classes ,one test class. All are working fine.

import java.util.*;
import java.util.Scanner;
import java.text.DecimalFormat;
//class Base player
class player
{
   String player_name;//attributes
   int player_num;
  
   public player(String na,int num)//constructor
   {
       this.player_name = na;
       this.player_num = num;
   }
   public String toString()//toString method
   {
       return(player_name+" ");
}
}
class pitcher extends player//class pitcher that extends Base/super class player
{
   int innings;//attributes of pitcher class
   int runs;
   public pitcher(String name,int num,int inn,int run)
   {
       super(name,num);//call super class constructor
       this.innings = inn;
       this.runs = run;
   }
   public double calcAvg()//avg()
   {
       double avg;
       avg = (runs/innings)*9;//calculate average
       return avg;//return average
   }
   public String toString()//toString()
   {
       return("Pitcher "+super.toString());
}
}
class batter extends player//class batter that extends super class player
{
private static DecimalFormat df2 = new DecimalFormat("#.###");//to print decimal places
   int number_bats;//attrubutes
   int number_hits;
   public batter(String na,int num,int bats,int hits)
   {
       super(na,num);//call constructor of super class
       this.number_bats = bats;
       this.number_hits = hits;
   }
   public double Avg()//average method to calculate average
   {
       double avg;
       avg = (double)number_hits/(double)number_bats;//calculate average
       return avg;
   }
   public String toString()//toString()
   {
       return("Batter "+super.toString()+"Batting average "+df2.format(Avg()));
}
}

class Main
{
public static void quit()//quit()
{
System.exit(0);
}
   public static void main(String []args)
   {
  
       int player,num_player,inns,num_runs,hits,bats;
       double average = 0.0;
       String name;
       Scanner sc = new Scanner(System.in);//create object of Scanner
       Scanner in = new Scanner(System.in);
       System.out.println("MENU"+"\n1- Pitcher"+"\n2- Batter"+"\n3- Quit");
       System.out.println("Select player type: ");
       player = sc.nextInt();//ask for choice from MENU
       if(player==1) //if select 1
       { //prompt for necessary info from user
           System.out.println("Enter pitcher name: ");
           name = in.nextLine();
           System.out.println("Enter player number: ");
           num_player = sc.nextInt();
           System.out.println("Enter number of innings: ");
           inns = in.nextInt();
           System.out.println("Enter number of runs: ");
           num_runs = in.nextInt();
           pitcher pt = new pitcher(name,num_player,inns,num_runs);//create object of class putcher
           average = pt.calcAvg();//call average method
           System.out.print(pt.toString()+" ");
       System.out.print("Run Average "+average);
       }
       else
       if(player == 2)//if select 2
       { //prompt for necessary info from user
       System.out.println("Enter batter name: ");
           name = in.nextLine();
           System.out.println("Enter player number: ");
           num_player = sc.nextInt();
           System.out.println("Enter at bats: ");
           bats = in.nextInt();
           System.out.println("Enter hits: ");
           hits = in.nextInt();
           batter bt = new batter(name,num_player,bats,hits);//create object of batter class
           System.out.print(bt.toString()+" ");//toString()
       }
       else
       if(player == 3)//if select 3 exit from program
       {
       quit();
       }
      
   }
}
          

Snapshots of the code: