Question

Write a Java program that will use a two-dimensional array and modularity to solve the following tasks: 1. Create a method to generate a 2-dimensional array (random numbers, range 0 - 500). The array has ROW rows and COL columns, where ROW and COL are class constants.

2. Create a method to print the array.

3. Create a method to find the largest element in the array

4. Create a method to find the smallest element in the array

5. Create a method to find the sum of all elements in the array

Answer 1

import java.util.*;

import java.io.*;

public class SoccerDemo{

public static void main(String args[]){

Scanner in = new Scanner(System.in);

try{

ArrayList<Player> players = new ArrayList<Player>();

Scanner fin = new Scanner(new File("Players.txt"));

int id, age;

String name;

double height, weight;

int i=0;

while(fin.hasNextLine()){

if(i==0){

i++;

continue;

}

id = fin.nextInt();

name = fin.next();

age = fin.nextInt();

height = fin.nextDouble();

weight = fin.nextDouble();

players.add(new Player(id, name, age, height, weight));

}

System.out.println("Successfully "+players.size()+" added to the players list");

System.out.println("=======================================");

System.out.println("Welcome to the Soccer Player Managemen and Visualization System");

System.out.println("1. Add details of a player");

System.out.println("2. Search details for a player");

System.out.println("3. Visualie student details");

System.out.println("4. Exit");

System.out.println("=======================================");

int option;

System.out.println("Please select an option from the above:");

option = in.nextInt();

switch(option){

case 1:

add_player(players);

break;

case 2:

search(players);

break;

case 3:

visulaize(players);

break;

case 4:

System.out.println("Good Bye!");

break;

default:

System.out.println("Invalid Option!");

}

}catch(FileNotFoundException e){

System.out.println("Unable to open file");

System.exit(0);

}

}

public static void add_player(ArrayList<Player> players){

Scanner in = new Scanner(System.in);

int id, age;

String name;

double height, weight;

System.out.println("Enter Player ID: ");

id = in.nextInt();

System.out.println("Enter Player Name: ");

name = in.next();

System.out.println("Enter Player Age: ");

age = in.nextInt();

System.out.println("Enter Player Height: ");

height = in.nextDouble();

System.out.println("Enter Player Weight: ");

weight = in.nextDouble();

players.add(new Player(id, name, age, height, weight));

System.out.println("Player successfully added to list");

}

public static void search(ArrayList<Player> players){

Scanner in = new Scanner(System.in);

System.out.println("Enter player ID to search: ");

int id = in.nextInt();

System.out.printf("%-5s %-15s %-5s %-5s %s\n", "ID", "Player Name", "Age", "Height", "Weight");

boolean found = false;

for(Player p: players){

if(p.PlayerID == id)

System.out.printf("%-5d %-15s %-5d %-5lf %-lf\n", p.PlayerID, p.PlayerName, p.Age, p.Height, p.Weight);

}

if(!found){

System.out.println("Player Not found");

}

}

public static void visulaize(ArrayList<Player> players){

System.out.printf("%-5s %-15s %-5s %-5s %s\n", "ID", "Player Name", "Age", "Height", "Weight");

for(Player p: players){

System.out.printf("%-5d %-15s %-5d %-5lf %-lf\n", p.PlayerID, p.PlayerName, p.Age, p.Height, p.Weight);

}

}

}