好的，所以对于我的 java 类的最终项目，我们应该实现一个运行 10 轮的简化版本的掷骰子。每当我运行它时，我都会得到“int b=std.nextInt()”行的 NoSuchElementsException。这是为什么？我打开了一个扫描仪对象等等，但它不允许我输入数据以继续游戏，而是抛出异常。对于“System.out.println(now.toString());”，我也遇到了同样的异常。主要方法中的行。怎么可能没有元素？
public class Player {
private int bet;//how much was bet
private boolean Pass;//they chose pass
private boolean DPass;//they chose dont pass
private boolean win;//did they win?
private int money=20;//how much they have
//private String continuity="initial";
//Modifier methods
public void newBet(int x){this.bet=x;}
public void Pass(boolean x){this.Pass=x;}
public void DPass(boolean x){this.DPass=x;}
public void didYouWin(boolean x){this.win=x;}
public void newMoney(int x){this.money+=x;}
//public void keepPlaying(String s){this.continuity=s;}
//Accessor methods
public int getBet(){return this.bet;}
public boolean getPass(){return this.Pass;}
public boolean getDPass(){return DPass;}
public boolean getResult(){return this.win;}
public int getMoney(){return this.money;}
public boolean isWinning(){return this.win;}
//public String playing(){return continuity;}
public String toString(){
return "Bet: $"+this.bet+"\nBet on Pass: "+this.Pass+"\nBet on Don't Pass: "+this.DPass+"\nMoney:S"+this.money;
}
//Constructor method
public Player(int bet, boolean pass, boolean dpass){
this.bet=bet;
this.Pass=pass;
this.DPass=dpass;
}
}
实际游戏代码<<<<<<<<<<<<<<<<<<<<<<<<
import java.util.*;
公共课试验1 {
public static int RollDice(){ //Method for Dice Roll
int[] die1={1, 2, 3, 4, 5, 6};
int[] die2={1, 2, 3, 4, 5, 6};
Random r=new Random();
int i1=r.nextInt(6-0);
int i2=r.nextInt(6-0);
int sum=die1[i1]+die2[i2];
System.out.println("\nDie 1: "+die1[i1]+"\nDie 2: "+die2[i2]+"\nTotal Sum: "+sum);
return sum;
}
public static int Roll7(){//roll for 7
if (RollDice()==7){
return 2;
}
else return Roll7();
}
public static int PointRoll(int x){//If person rolled 4,5,6,8,9,10...
int a=RollDice();
if (a==x){
return Roll7();
}
else if (a==7){
return 1;
}
else return PointRoll(x);
}
public static int ComeOutRoll(){//1 = pass loses, 2 = pass wins, 3 = pass loses and dont pass gets nothing
int x=RollDice();
if ((x==2)||(x==3)) {
return 1;
}
else if ((x==7)||(x==11)){
return 2;
}
else if (x==12){
return 3;
}
else return PointRoll(x);
}
public static Player InitializeGame(){
//initialize stats and player
System.out.println("Please enter how much you'd like to bet (max is $5)");
Scanner std=new Scanner(System.in);
int b=std.nextInt();
System.out.println("Please enter 1 if you bet PASS or 2 if you bet DON'T PASS");
int p=std.nextInt();
boolean betpass, betdpass;
if (p==1){
betpass=true;
betdpass=false;
}
else {
betpass=false;
betdpass=true;
}
Player name=new Player(b, betpass, betdpass);
System.out.print(name.toString());
std.close();
return name;
}
public static Player BeginGame(Player name){
//Start actual game process without the betting ie all the dice rolling and stat changing -->will return player's status
//boolean pass=name.getPass();
//boolean neutral=false;
int result=ComeOutRoll();
//find out if player won money or lost money
if (name.getPass()){//if player bet on pass
if (result==1){
name.newMoney(name.getMoney()-name.getBet());
}
else if (result==2){
name.newMoney(name.getMoney()+name.getBet());
}
else {
name.newMoney(name.getMoney()-name.getBet());
}
}
else {//if player bet dont pass
if (result==1){
name.newMoney(name.getMoney()+name.getBet());
}
else if (result==2){
name.newMoney(name.getMoney()-name.getBet());
}
else {
name.didYouWin(false);
}
}
if (name.getMoney()<=0){name.didYouWin(false);}//setting win data for yes or no. IF no money, u lose
else {name.didYouWin(true);}
public static Player Continue(Player name){//just like begin game, but adding the new bet
System.out.println("\nPlease enter how much you'd like to bet (max is $5)");
Scanner std=new Scanner(System.in);
int b=std.nextInt();
System.out.println("Please enter 1 if you bet PASS or 2 if you bet DON'T PASS");
int p=std.nextInt();
boolean betpass, betdpass;
if (p==1){
betpass=true;
betdpass=false;
}
else {
betpass=false;
betdpass=true;
}
name.Pass(betpass);
name.DPass(betdpass);
name.newBet(b);
System.out.println(name.toString());
return BeginGame(name);
}
public static void Loss(Player name){//losing message
System.out.println("YOU LOSE!!!!!!!! HAHAHAHAHAHA!!!!!\n"+name.toString());
}
public static void End(Player name){//End game message
System.out.println("Thank you for playing!");
}
public static Player Run(){
Player name = InitializeGame();
return BeginGame(name);
}
public static void main(String[] args){
System.out.println("Welcome to my version of craps!");
Player now=Run();
for (int i=1;i<=10;i++){
if (now.isWinning()){
System.out.println("ROUND "+i);
System.out.println(now.toString());
now=Continue(now);
i++;
}
else {
Loss(now);
System.out.print(now.toString());
End(now);
i=11;
}
}
}
}