我已经使用 java 几个星期了,想尝试制作我的第一个小游戏。我所拥有的一切都工作正常,直到我尝试添加再次播放功能。看起来它只是跳过了底部的一小部分代码,我不明白为什么。我尝试过移动代码的不同部分,但无法弄清楚为什么它不起作用。public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("You have 10 tries to correctly guess a random number between 1 and 10. Good luck! \n" + "After you have entered a number, press ENTER to see if you won."); boolean play; play = true; do { int tries = 10, triesLeft = 0, triesUsed = 0; String YorN; do { System.out.print("\nEnter A Number: "); int numInp = scan.nextInt(); int randomNumber = (int)(Math.random()*9) + 1; System.out.println("The number was " + randomNumber); if(numInp == randomNumber) { System.out.println("\nYou Win! Great job."); triesLeft = --tries; triesUsed = 10 - triesLeft; tries = -1; } else { System.out.println("Try Again..."); tries --; } } while( tries > 0); String playAgain = (" Feel free to play again soon!"); if(tries == 0) { System.out.println("\nOut of tries :( You lose loser " + playAgain); } if(tries == -1) { System.out.println("\nYou used " + triesUsed + " tries and had " + triesLeft + " tries left! :)" + playAgain); } System.out.print("\nDo you want to play again? Y or N?"); YorN = scan.nextLine(); if (YorN == ("Y") || YorN == ("y")) { play = true; } else if (YorN == ("N") || YorN == ("n")) { play = false; } else {} } while(play = true); if (play = false){ System.out.println("\nGood Bye"); }}当我运行代码时,这个系统似乎没有做任何事情:YorN = scan.nextLine(); if (YorN == ("Y") || YorN == ("y")) { play = true; } else if (YorN == ("N") || YorN == ("n")) { play = false; } else {}这是我运行时看到的内容:你赢了!做得好。您已经尝试了 5 次,还剩 5 次尝试!:) 很快就可以再次玩了!你想再玩一次吗?是还是否?输入号码:它没有给我一个应该输入 y 或 n 的位置。如果有人知道为什么我会非常感谢你的帮助
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nextInt() 或 next() 方法不读取 Enter。通常在数字之后您必须按 Enter 键,而上述方法尚未准备好。避免这种情况的排序方式是保留 1 个额外的 sc.nextLine() 方法调用。它将读取并丢弃输入。
scan.nextLine();
YorN = scan.nextLine();
if (YorN == ("Y") || YorN == ("y"))
{
play = true;
}
else if (YorN == ("N") || YorN == ("n"))
{
play = false;
}
else {}
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