<Java> Storing multiple object types and enumerated types
- Jeemin Myung
- 2020년 11월 29일
- 1분 분량
import java.util.Scanner;
public class TeamManager{
public static void main(String[]args){
System.out.println("Menu:"+"\n1. Print player list."+"\n2. Add player to roster"+
"\n3. Remove player from roster."+"\n4. Change player's position."+"\n5. Quit.");
Player[] players = new Player[10];
int count = 0;
Scanner scan=new Scanner(System.in);
System.out.print("Enter menu choice: ");
int menuChoice=scan.nextInt();
while(menuChoice!=5){
if(menuChoice==1){
for(int i=0;i<players.length;i++){
if(players[i]!=null){
System.out.println(players[i]);
}
}
}
if (menuChoice==2){
System.out.print("Enter player name: ");
String playerName=scan.next();
System.out.print("Enter player position (1 = defender, 2 = midfielder, 3 = forward) : ");
Position playerPositionEnum=null;
int playerPosition=scan.nextInt();
if (playerPosition==1){
playerPositionEnum = Position.DEFENDER;
}
if(playerPosition==2){
playerPositionEnum = Position.MIDFIELDER;
}
if(playerPosition==3){
playerPositionEnum = Position.FORWARD;
}
Player p1 = new Player(playerName, playerPositionEnum);
players[count] = p1;
count++;
}
if (menuChoice==3){
System.out.print("Enter name of player to remove: ");
String removeName = scan.next();
remove(players,removeName);
}
if (menuChoice==4){
System.out.print("Enter name of player to reposition: ");
String repositionName = scan.next();
System.out.print("Enter new position (1 = defender, 2 = midfielder. 3 = forward): ");
int repositionNum = scan.nextInt();
Position playerPositionEnum=null;
if (repositionNum==1){
playerPositionEnum = Position.DEFENDER;
}
if(repositionNum==2){
playerPositionEnum = Position.MIDFIELDER;
}
if(repositionNum==3){
playerPositionEnum = Position.FORWARD;
}
for(int i=0;i<players.length;i++){
if(players[i]!=null){
if(players[i].getName().equals(repositionName)){
players[i].setPosition(playerPositionEnum);
}
}
}
System.out.println("Menu:"+"\n1. Print player list."+"\n2. Add player to roster"+
"\n3. Remove player from roster."+"\n4. Change player's position."+"\n5. Quit.");
System.out.print("Enter menu choice: ");
menuChoice=scan.nextInt();
}
}
public static void remove(Player[] players,String p){
for(int i=0;i<players.length;i++){
if(players[i]!=null){
if(players[i].getName().equals(p)){
players[i]=null;
}
}
}
}
}
enum Position {DEFENDER, MIDFIELDER, FORWARD};
class Player {
String name;
Position position;
public Player(String name, Position position){
this.name=name;
this.position=position;
}
public String getName(){
return name;
}
public void setPosition(Position position){
this.position=position;
}
public String toString(){
return name+": "+position;
}
}
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