Java 足球队：对象和类别
在我发布我的问题之前，我只需要关于如何改进java程序的指导，因为我想学习 因此，对于我的任务，我需要： 创建3个类，app，football player和football team。应用程序（app）将使用另外两个类（football player和football team） 应用程序将Java 足球队：对象和类别,java,arrays,class,object,instances,Java,Arrays,Class,Object,Instances,在我发布我的问题之前，我只需要关于如何改进java程序的指导，因为我想学习 因此，对于我的任务，我需要： 创建3个类，app，football player和football team。应用程序（app）将使用另外两个类（football player和football team） 应用程序将 创建11名足球运动员（您可以将他们放置在阵列或 ArrayList） 使用上面的球员创建一个足球队使用 football team实例（对象）以显示请求的信息 在实验室里 足球运动员班 至少具有来自
- 创建11名足球运动员（您可以将他们放置在阵列或 ArrayList）
- 使用上面的球员创建一个足球队使用 football team实例（对象）以显示请求的信息 在实验室里
- 至少具有来自的5个属性 您可以选择一种返回有关玩家的完整信息的方法
- 名字和吉祥物
- 11名足球运动员
- 任何其他属性（可选）
- 显示有关团队的所有信息的方法，包括：
- 名字
- 吉祥物，以及球队中每个球员的信息
- 一种使用输入参数（例如球员位置或球员编号）显示球队中特定球员信息的方法。例如，从A队，显示关于四分卫的信息，或显示关于5号球员的信息
我对我的团队课感到困惑。我不知道如何向类中添加11个播放器，并为播放器实例提供一个输入参数。我不确定我的应用程序类，因为我不知道如何使用football team实例（对象）来显示实验室中请求的信息 这是我到目前为止所拥有的
public class app {
public static void main(String[] args)
{
player pl1 = new player
("Christian","Campbell","Cornerback","Alabama","Central");
System.out.println(pl1.getInfo());
player pl2 = new player
("Marcus","Allen","Safety","Maryland","Dr. Henry A. Wise, Jr");
System.out.println(pl2.getInfo());
player pl3 = new player
("Tommy","Stevens","Quarterback","Indiana","Decatur Central");
System.out.println(pl3.getInfo());
player pl4 = new player
("Nyeem","Wartman-White", "Linebacker","Pennsylvania","Valley View");
System.out.println(pl4.getInfo());
player pl5 = new player
("George", "Foreman", "Defensive back","Georgia","Parkview");
System.out.println(pl5.getInfo());
player pl6 = new player
("Andre","Robinson","Right Tackle","Pennsylvania","Bishop McDevitt");
System.out.println(pl6.getInfo());
player pl7 = new player
("Malik","Golden","Safety","Connecticut","Chesire Academy");
System.out.println(pl7.getInfo());
player pl8 = new player
("Koa","Farmer","Safety","California","Notre Dame");
System.out.println(pl8.getInfo());
player pl9 = new player
("Jake","Zembiec","Quarterback","New York","Aquinas Institute");
System.out.println(pl9.getInfo());
player pl10 = new player
("Brandon","Polk","Wide Receiver","Virgina","Briar Woods");
System.out.println(pl10.getInfo());
player pl11 = new player
("Trace","McSorley","Quarterback","Virgina","Briar Woods");
System.out.println(pl11.getInfo());
}
}
public class player {
//---------Declaring attributes----
String firstName;
String lastName;
String position;
String State;
String Highschool;
player (String inf_firstName, String inf_lastName, String inf_position, String inf_State, String inf_Highschool)
{
firstName = inf_firstName;
lastName = inf_lastName;
position = inf_position;
State = inf_State;
Highschool = inf_Highschool;
}
String getInfo()
{
return "Name: "+firstName+ " "+lastName+", "+"position: " +position+ ", State: " +State+ ", High School: " +Highschool;
}
}
public class team {
String team = "Penn State";
String mascot = "Nittany Lions";
team(String inf_team, String inf_mascot)
{
team = inf_team;
mascot = inf_mascot;
}
team t1 = new team("Penn State", "Nittany Lions");
String getInfo()
{
return "Team Name: "+team+ "Team Mascot: "+mascot;
}
}
在您的团队课程中，在字符串团队和字符串吉祥物下面，您需要一个玩家[]玩家数组。在构造函数中，传入一个包含所有玩家的数组。2选项- 在main方法中，创建一个数组并将所有玩家添加到该数组中，然后将其传递给团队构造函数，该构造函数将内部数组设置为传入数组的值 或者您的团队对象有一个名为addPlayer（player）的方法，它将玩家添加到团队的内部玩家数组中。然后在每次创建播放器后调用该方法
你也应该把你的类名大写。。像Team、Player等。我没有为实例变量编写
gettersetter团队的描述来看，它可能是这样的
public class Team {
//Instance variables and constants
private static final int MAX_PLAYERS = 11;
private Player[] players;
private String name;
private String mascot;
//Constructor
public Team(String name, String mascot) {
this.name = name;
this.mascot = mascot;
this.players = new Player[MAX_PLAYERS];
}
//Add players to the team
public void addPlayers(List<Player> p) {
//Ensures only 11 players are added to the team
for (int i = 0; i < MAX_PLAYERS; i++)
this.players[i] = p.get(i);
}
}
由于您有11名玩家，因此最好创建一个对象数组，因为它们具有相似的属性。像这样：
Player[] players = new Player[11];
然后添加它们的参数，然后将其传递给app的构造函数类，该类将获取palyers的列表。我已经更新了您的解决方案。这就是创建类和方法的方法。
有关更多信息，请参阅内联注释。希望这有帮助
public class App {
public static void main(String[] args) {
//creating a team
Team t1 = new Team("Penn State", "Nittany Lions");
Player pl1 = new Player("Christian", "Campbell", "Cornerback", "Alabama", "Central");
System.out.println(pl1.getInfo());
//for example, adding one player to the team t1 created above.
t1.addPlayer(pl1);
//you can repeat this step for adding all the teams
Player pl2 = new Player("Marcus", "Allen", "Safety", "Maryland", "Dr. Henry A. Wise, Jr");
System.out.println(pl2.getInfo());
Player pl3 = new Player("Tommy", "Stevens", "Quarterback", "Indiana", "Decatur Central");
System.out.println(pl3.getInfo());
Player pl4 = new Player("Nyeem", "Wartman-White", "Linebacker", "Pennsylvania", "Valley View");
System.out.println(pl4.getInfo());
Player pl5 = new Player("George", "Foreman", "Defensive back", "Georgia", "Parkview");
System.out.println(pl5.getInfo());
Player pl6 = new Player("Andre", "Robinson", "Right Tackle", "Pennsylvania", "Bishop McDevitt");
System.out.println(pl6.getInfo());
Player pl7 = new Player("Malik", "Golden", "Safety", "Connecticut", "Chesire Academy");
System.out.println(pl7.getInfo());
Player pl8 = new Player("Koa", "Farmer", "Safety", "California", "Notre Dame");
System.out.println(pl8.getInfo());
Player pl9 = new Player("Jake", "Zembiec", "Quarterback", "New York", "Aquinas Institute");
System.out.println(pl9.getInfo());
Player pl10 = new Player("Brandon", "Polk", "Wide Receiver", "Virgina", "Briar Woods");
System.out.println(pl10.getInfo());
Player pl11 = new Player("Trace", "McSorley", "Quarterback", "Virgina", "Briar Woods");
System.out.println(pl11.getInfo());
}
}
class Player {
// ---------Declaring attributes----
String firstName;
String lastName;
String position;
String State;
String Highschool;
Player(String inf_firstName, String inf_lastName, String inf_position, String inf_State, String inf_Highschool) {
firstName = inf_firstName;
lastName = inf_lastName;
position = inf_position;
State = inf_State;
Highschool = inf_Highschool;
}
String getInfo() {
return "Name: " + firstName + " " + lastName + ", " + "position: " + position + ", State: " + State
+ ", High School: " + Highschool;
}
}
class Team {
String team = "Penn State";
String mascot = "Nittany Lions";
Player[] playerArr = new Player[11]; //this is the main part. Array of players (11)
int playerCount = 0; //this will track the number of players being added to the team.
Team(String inf_team, String inf_mascot) {
team = inf_team;
mascot = inf_mascot;
}
public String getInfo() {
return "Team Name: " + team + "Team Mascot: " + mascot;
}
//Using this method you can add the players to the Player Array.
public void addPlayer(Player player) {
if (playerCount < 11) {
playerArr[playerCount] = player;
playerCount++;
}
}
//Using this method you find out a player with specific quality
//like in this case its position of the player.
//you can iterate through the Players Array and can find out the player
// And after that you can get the information of the player by your method
//getInfo
public String getPlayerInfo(String positionTemp) {
Player player = null;
for (int i = 0; i < playerArr.length; i++) {
if (playerArr[i].position.equals(positionTemp)) {
player = playerArr[i];
break;
}
}
return player.getInfo();
}
}
公共类应用程序{
公共静态void main（字符串[]args）{
//创建团队
t1队=新队（“宾夕法尼亚州”、“尼坦狮子队”）；
玩家pl1=新玩家（“克里斯蒂安”、“坎贝尔”、“角后卫”、“阿拉巴马”、“中环”）；
System.out.println（pl1.getInfo（））；
//例如，向上面创建的团队t1添加一名玩家。
t1.addPlayer（pl1）；
//可以重复此步骤添加所有团队
玩家pl2=新玩家（“马库斯”、“艾伦”、“安全”、“马里兰”、“小亨利A.怀斯博士”）；
System.out.println（pl2.getInfo（））；
球员pl3=新球员（“汤米”、“史蒂文斯”、“四分卫”、“印第安纳”、“迪凯特中锋”）；
System.out.println（pl3.getInfo（））；
球员pl4=新球员（“尼姆”、“沃特曼·怀特”、“后卫”、“宾夕法尼亚”、“谷景”）；
System.out.println（pl4.getInfo（））；
球员pl5=新球员（“乔治”、“工头”、“防守后卫”、“乔治亚”、“公园景观”）；
System.out.println（pl5.getInfo（））；
球员pl6=新球员（“安德烈”、“罗宾逊”、“右铲球”、“宾夕法尼亚”、“麦克德维特主教”）；
System.out.println（pl6.getInfo（））；
玩家pl7=新玩家（“马利克”、“黄金”、“安全”、“康涅狄格州”、“切塞尔学院”）；
System.out.println（pl7.getInfo（））；
玩家pl8=新玩家（“Koa”、“农民”、“安全”、“加利福尼亚”、“圣母院”）；
System.out.println（pl8.getInfo（））；
球员pl9=新球员（“杰克”、“泽姆比奇”、“四分卫”、“纽约”、“阿奎那学院”）；
System.out.println（pl9.getInfo（））；
玩家pl10=新玩家（“布兰登”、“波尔克”、“宽接球手”、“维吉尼亚”、“布里亚·伍兹”）；
System.out.println（pl10.getInfo（））；
球员pl11=新球员（“Trace”、“McSorley”、“四分卫”、“Virgina”、“Briar Woods”）；
System.out.println（pl11.getInfo（））；
}
}
职业选手{
//------声明属性----
字符串名；
字符串lastName；
串位置；
字符串状态；
弦高中；
播放器（字符串inf\u名字、字符串inf\u姓氏、字符串inf\u位置、字符串inf\u状态、字符串inf\u高中）{
firstName=inf_firstName；
lastName=inf\u lastName；
位置=inf\u位置；
状态=inf_状态；
高中=inf_高中；
}
字符串getInfo（）{
返回“名称：”+firstName+“+lastName+”，“+”位置：“+position+”，状态：“+State
+高中：“+高中；
}
}
班队{
String team=“宾夕法尼亚州立大学”；
字符串吉祥物=“Nittany狮子”；
Player[]playerr=新玩家[11]；//这是主要部分。玩家数组（11）
int playerCount=0；//这将跟踪加入球队的球员数量。
团队（字符串inf\u团队，字符串inf\u吉祥物）{
public class App {
public static void main(String[] args) {
//creating a team
Team t1 = new Team("Penn State", "Nittany Lions");
Player pl1 = new Player("Christian", "Campbell", "Cornerback", "Alabama", "Central");
System.out.println(pl1.getInfo());
//for example, adding one player to the team t1 created above.
t1.addPlayer(pl1);
//you can repeat this step for adding all the teams
Player pl2 = new Player("Marcus", "Allen", "Safety", "Maryland", "Dr. Henry A. Wise, Jr");
System.out.println(pl2.getInfo());
Player pl3 = new Player("Tommy", "Stevens", "Quarterback", "Indiana", "Decatur Central");
System.out.println(pl3.getInfo());
Player pl4 = new Player("Nyeem", "Wartman-White", "Linebacker", "Pennsylvania", "Valley View");
System.out.println(pl4.getInfo());
Player pl5 = new Player("George", "Foreman", "Defensive back", "Georgia", "Parkview");
System.out.println(pl5.getInfo());
Player pl6 = new Player("Andre", "Robinson", "Right Tackle", "Pennsylvania", "Bishop McDevitt");
System.out.println(pl6.getInfo());
Player pl7 = new Player("Malik", "Golden", "Safety", "Connecticut", "Chesire Academy");
System.out.println(pl7.getInfo());
Player pl8 = new Player("Koa", "Farmer", "Safety", "California", "Notre Dame");
System.out.println(pl8.getInfo());
Player pl9 = new Player("Jake", "Zembiec", "Quarterback", "New York", "Aquinas Institute");
System.out.println(pl9.getInfo());
Player pl10 = new Player("Brandon", "Polk", "Wide Receiver", "Virgina", "Briar Woods");
System.out.println(pl10.getInfo());
Player pl11 = new Player("Trace", "McSorley", "Quarterback", "Virgina", "Briar Woods");
System.out.println(pl11.getInfo());
}
}
class Player {
// ---------Declaring attributes----
String firstName;
String lastName;
String position;
String State;
String Highschool;
Player(String inf_firstName, String inf_lastName, String inf_position, String inf_State, String inf_Highschool) {
firstName = inf_firstName;
lastName = inf_lastName;
position = inf_position;
State = inf_State;
Highschool = inf_Highschool;
}
String getInfo() {
return "Name: " + firstName + " " + lastName + ", " + "position: " + position + ", State: " + State
+ ", High School: " + Highschool;
}
}
class Team {
String team = "Penn State";
String mascot = "Nittany Lions";
Player[] playerArr = new Player[11]; //this is the main part. Array of players (11)
int playerCount = 0; //this will track the number of players being added to the team.
Team(String inf_team, String inf_mascot) {
team = inf_team;
mascot = inf_mascot;
}
public String getInfo() {
return "Team Name: " + team + "Team Mascot: " + mascot;
}
//Using this method you can add the players to the Player Array.
public void addPlayer(Player player) {
if (playerCount < 11) {
playerArr[playerCount] = player;
playerCount++;
}
}
//Using this method you find out a player with specific quality
//like in this case its position of the player.
//you can iterate through the Players Array and can find out the player
// And after that you can get the information of the player by your method
//getInfo
public String getPlayerInfo(String positionTemp) {
Player player = null;
for (int i = 0; i < playerArr.length; i++) {
if (playerArr[i].position.equals(positionTemp)) {
player = playerArr[i];
break;
}
}
return player.getInfo();
}
}