Java简单的if / else语句

Question

我正在制作一个二十一点游戏，由于某种原因无法让else语句起作用。你能纠正这个并正确解释吗？

 {
    if (user.equalsIgnoreCase("next card"))
        b = ran.nextInt(1 + 9) + 1;
        y = x + c + b;
        System.out.println("You received " + b + " And together your cards equal " + y + " .");
    } else {
        System.out.println("You decided to stay.");
    }

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Answer 1

正确使用括号，您的括号位于“if”块之外：

if (/*condition*/) {
    // Do code
} else {
    // Do other code
}

Answer 2

if(user.equalsIgnoreCase("next card")) { 
    b = ran.nextInt(1 + 9)+1; 
    y = x + c + b; 
    System.out.println("You received " +b+ " And together your cards equal " +y+ " ."); 
} else { 
    System.out.println("You decided to stay."); 
}

Answer 3

您的IF声明没有正确的结构。看看下面的文章......它将解释所需的结构。

http://docs.oracle.com/javase/tutorial/java/nutsandbolts/if.html

希望它能解决你可能遇到的任何困惑。

希望这有帮助。