【发布时间】：2015-09-01 21:11:43
【问题描述】：
我在 Eclipse 中为一个简单的二十一点游戏编写了一个程序，它运行起来没有任何问题。但是，当我尝试在我的 pico 编辑器中使用 javac 编译时，它不会编译。为什么 Eclipse 不说编译错误在哪里？代码如下。
import java.util.Scanner;
import java.util.Random;
public class Blackjack {
public static void main(String args[])
{
Scanner keyboard = new Scanner(System.in);
Random randomGenerator = new Random();
int nextCard;
boolean keepPlaying = true;
boolean playAgain = true;
char hit;
int DECK_MAX = 10;
//This is the main loop to play the entire game
while (playAgain == true)
{
int userCard1 = randomGenerator.nextInt(DECK_MAX) + 1;
int userCard2 = randomGenerator.nextInt(DECK_MAX) + 1;
int userTotal = userCard1 + userCard2;
int dealerCard1 = randomGenerator.nextInt(DECK_MAX) + 1;
int dealerCard2 = randomGenerator.nextInt(DECK_MAX) + 1;
int dealerTotal = dealerCard1 + dealerCard2;
//This deals the first two cards to the user, and prints the total
System.out.println("Welcome to the CCSF Casino! Lets play...");
System.out.println("Your first cards are " + userCard1 + " and " + userCard2);
System.out.println("You have a total of " + userTotal);
//The following checks three scenarios that can end the game on the first deal
if (userTotal == 21 && dealerTotal == 21)
{
System.out.println("Both you and the dealer have 21. It's a push.");
keepPlaying = false;
}
if (userTotal != 21 && dealerTotal == 21)
{
System.out.println("The dealer was dealt 21. You lose.");
keepPlaying = false;
}
if (userTotal == 21 && dealerTotal != 21)
{
System.out.println("You have 21. You win!");
keepPlaying = false;
}
//The following checks if the game should continue to user interaction phase, and takes user input if so
if (keepPlaying == true)
{
System.out.println("The dealer is showing " + dealerCard1 + " with one card face down.");
//The following asks the user if they want to keep hitting as long as their total is less than 21
while (userTotal < 21)
{
System.out.println("Would you like another card(y/n)?");
hit = keyboard.next().charAt(0);
if (hit == 'y')
{
nextCard = randomGenerator.nextInt(DECK_MAX) + 1;
userTotal += nextCard;
System.out.println("You were dealt a " + nextCard + " for a total of " + userTotal);
if(userTotal > 21)
{
System.out.println("You bust and lose. Sorry...");
keepPlaying = false;
break;
}
}
else
break;
}
}
//The following checks if the game should continue to the dealer interaction phase. If so, it hits until dealer has > 17
if (keepPlaying == true)
{
System.out.println("The dealer's current total is " + dealerTotal);
while (dealerTotal < 17)
{
nextCard = randomGenerator.nextInt(DECK_MAX) + 1;
dealerTotal += nextCard;
System.out.println("Dealer has been dealt a " + nextCard + " for a total of " + dealerTotal);
if (dealerTotal > 21)
{
System.out.println("The dealer busts. You win!");
keepPlaying = false;
break;
}
}
}
//The following checks if the game should continue into the comparison phase. If so, it determines whether the dealer of user win
if (keepPlaying == true)
{
if (userTotal > dealerTotal)
System.out.println("You win! You had " + userTotal + " and dealer only had " + dealerTotal);
if (userTotal < dealerTotal)
System.out.println("You lose...You only had " + userTotal + " and dealer had " + dealerTotal);
if (userTotal == dealerTotal)
System.out.println("It's a push!");
}
System.out.println("Would you like to play again(y/n)?");
if (keyboard.next().charAt(0) == 'y')
{ playAgain = true;
keepPlaying = true;
}
else
{
System.out.println("Don't let the door hit you on the way out!");
break;
}
}
}
}
这就是我从 javac 得到的结果
Blackjack.java:23: error: not a statement
total for user
^
Blackjack.java:23: error: ';' expected
total for user
^
Blackjack.java:23: error: '(' expected
total for user
^
Blackjack.java:23: error: not a statement
total for user
^
Blackjack.java:23: error: ';' expected
total for user
^
Blackjack.java:24: error: '.class' expected
int dealerCard1 =
^
Blackjack.java:24: error: illegal start of expression
int dealerCard1 =
^
Blackjack.java:24: error: ')' expected
int dealerCard1 =
^
Blackjack.java:25: error: illegal start of expression
randomGenerator.nextInt(DECK_MAX) + 1; //first card for dealer
^
Blackjack.java:25: error: ';' expected
randomGenerator.nextInt(DECK_MAX) + 1; //first card for dealer
^
Blackjack.java:25: error: variable declaration not allowed here
randomGenerator.nextInt(DECK_MAX) + 1; //first card for dealer
^
Blackjack.java:25: error: not a statement
randomGenerator.nextInt(DECK_MAX) + 1; //first card for dealer
^
Blackjack.java:25: error: ';' expected
randomGenerator.nextInt(DECK_MAX) + 1; //first card for dealer
^
Blackjack.java:32: error: ';' expected
prints the total
^
Blackjack.java:33: error: ';' expected
System.out.println("Welcome to the CCSF Casino!
^
Blackjack.java:33: error: unclosed string literal
System.out.println("Welcome to the CCSF Casino!
^
Blackjack.java:33: error: ';' expected
System.out.println("Welcome to the CCSF Casino!
^
Blackjack.java:34: error: not a statement
Lets play...");
^
Blackjack.java:34: error: ';' expected
Lets play...");
^
Blackjack.java:34: error: unclosed string literal
Lets play...");
^
Blackjack.java:41: error: ';' expected
end the game on the first deal
^
Blackjack.java:41: error: ';' expected
end the game on the first deal
^
Blackjack.java:41: error: ';' expected
end the game on the first deal
^
Blackjack.java:41: error: not a statement
end the game on the first deal
^
Blackjack.java:41: error: ';' expected
end the game on the first deal
^
Blackjack.java:43: error: ';' expected
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: variable declaration not allowed here
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: ';' expected
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: ';' expected
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: not a statement
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: ';' expected
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: unclosed character literal
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: not a statement
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: ';' expected
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: ';' expected
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:43: error: ';' expected
the user and dealer were both dealt 21, it's a push and the game ends
^
Blackjack.java:45: error: unclosed string literal
System.out.println("Both you and the
^
Blackjack.java:45: error: ';' expected
System.out.println("Both you and the
^
Blackjack.java:46: error: not a statement
dealer have 21. It's a push.");
^
Blackjack.java:46: error: ';' expected
dealer have 21. It's a push.");
^
Blackjack.java:46: error: unclosed character literal
dealer have 21. It's a push.");
^
Blackjack.java:46: error: not a statement
dealer have 21. It's a push.");
^
Blackjack.java:46: error: ';' expected
dealer have 21. It's a push.");
^
Blackjack.java:46: error: unclosed string literal
dealer have 21. It's a push.");
^
Blackjack.java:50: error: ';' expected
the dealer was dealt 21 and the user wasn't, user loses and the game ends
^
Blackjack.java:50: error: variable declaration not allowed here
the dealer was dealt 21 and the user wasn't, user loses and the game ends
^
Blackjack.java:50: error: ';' expected
the dealer was dealt 21 and the user wasn't, user loses and the game ends
^
Blackjack.java:50: error: ';' expected
the dealer was dealt 21 and the user wasn't, user loses and the game ends
^
Blackjack.java:50: error: unclosed character literal
the dealer was dealt 21 and the user wasn't, user loses and the game ends
^
Blackjack.java:50: error: ';' expected
the dealer was dealt 21 and the user wasn't, user loses and the game ends
^
Blackjack.java:50: error: ';' expected
the dealer was dealt 21 and the user wasn't, user loses and the game ends
^
Blackjack.java:50: error: ';' expected
the dealer was dealt 21 and the user wasn't, user loses and the game ends
^
Blackjack.java:52: error: unclosed string literal
System.out.println("The dealer was dealt
^
Blackjack.java:52: error: ';' expected
System.out.println("The dealer was dealt
^
Blackjack.java:53: error: ';' expected
21. You lose.");
^
Blackjack.java:53: error: unclosed string literal
21. You lose.");
^
Blackjack.java:57: error: ';' expected
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: variable declaration not allowed here
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: not a statement
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: ';' expected
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: ';' expected
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: unclosed character literal
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: ';' expected
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: ';' expected
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: not a statement
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:57: error: ';' expected
the user got 21 and the dealer didn't, user wins and game ends
^
Blackjack.java:59: error: unclosed string literal
System.out.println("You have 21. You
^
Blackjack.java:59: error: ';' expected
System.out.println("You have 21. You
^
Blackjack.java:60: error: unclosed string literal
win!");
^
Blackjack.java:60: error: not a statement
win!");
^
Blackjack.java:65: error: ';' expected
continue to user interaction phase, and takes user input if so
^
Blackjack.java:65: error: ';' expected
continue to user interaction phase, and takes user input if so
^
Blackjack.java:65: error: not a statement
continue to user interaction phase, and takes user input if so
^
Blackjack.java:65: error: ';' expected
continue to user interaction phase, and takes user input if so
^
Blackjack.java:65: error: ';' expected
continue to user interaction phase, and takes user input if so
^
Blackjack.java:65: error: ';' expected
continue to user interaction phase, and takes user input if so
^
Blackjack.java:65: error: '(' expected
continue to user interaction phase, and takes user input if so
^
Blackjack.java:65: error: ')' expected
continue to user interaction phase, and takes user input if so
^
Blackjack.java:68: error: unclosed string literal
System.out.println("The dealer is showing
^
Blackjack.java:68: error: ';' expected
System.out.println("The dealer is showing
^
Blackjack.java:69: error: ';' expected
" + dealerCard1 + " with one card face down.");
^
Blackjack.java:69: error: ';' expected
" + dealerCard1 + " with one card face down.");
^
Blackjack.java:69: error: unclosed string literal
" + dealerCard1 + " with one card face down.");
^
Blackjack.java:69: error: not a statement
" + dealerCard1 + " with one card face down.");
^
Blackjack.java:72: error: ';' expected
want to keep hitting as long as their total is less than 21
^
Blackjack.java:72: error: ';' expected
want to keep hitting as long as their total is less than 21
^
Blackjack.java:72: error: not a statement
want to keep hitting as long as their total is less than 21
^
Blackjack.java:72: error: ';' expected
want to keep hitting as long as their total is less than 21
^
Blackjack.java:72: error: ';' expected
want to keep hitting as long as their total is less than 21
^
Blackjack.java:72: error: ';' expected
want to keep hitting as long as their total is less than 21
^
Blackjack.java:72: error: ';' expected
want to keep hitting as long as their total is less than 21
^
Blackjack.java:72: error: not a statement
want to keep hitting as long as their total is less than 21
^
Blackjack.java:72: error: ';' expected
want to keep hitting as long as their total is less than 21
^
Blackjack.java:75: error: unclosed string literal
System.out.println("Would you
^
Blackjack.java:75: error: ';' expected
System.out.println("Would you
^
Blackjack.java:76: error: ';' expected
like another card(y/n)?");
^
Blackjack.java:76: error: not a statement
like another card(y/n)?");
^
Blackjack.java:76: error: ';' expected
like another card(y/n)?");
^
Blackjack.java:76: error: unclosed string literal
like another card(y/n)?");
^
Blackjack.java:84: error: unclosed string literal
System.out.println("You
^
100 errors
【问题讨论】：
-
那么 javac 是怎么说的？
-
换句话说，请发布完整的编译器错误消息并指出是哪一行导致了问题。
-
userTotal和dealerTotal永远不会为 21。它们最多为 20。 -
first 错误消息显示
total for user。我在代码中没有看到该文本。再试一次。 -
您正在编译的代码可能不是您在这里展示的代码。
标签： java compiler-errors