高级 Java 控制台输入
作为一种自我练习，我正在用 Java 创建一个 BF 解释器，它通过控制台。在大多数情况下，这很好，但是，正如您可能知道的那样，BF 一次接受一个字符的输入，包括换行符。这意味着据我所知，标准控制台输入库将不起作用，因为它们接受整个字符串，然后在最后要求返回。我希望 , 接受适合 char 的下一个击键，在键入时不打印它。因此，当 BF 要求输入并且您输入 a 时，它会接收 a 但不会在控制台中显示它，除非 BF 程序输出 a稍后再说。
我该怎么做？
As a self-practice, I'm making a BF interpreter in Java that does I/O through the console. For the most part it's fine, however, as you might be aware, BF takes input one character at a time, including newlines. This means that as far as I know the standard console input libraries won't work, because they take in entire strings, and then ask for a return at the end. I want , to take in the next keystroke that fits into a char without printing it when it is typed. So when BF asks for input, and you type in a, it takes in the a but doesn't show it in the console unless the BF program outputs a itself later.
How can I do this?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（3）
我建议使用 JLine http://jline.sourceforge.net
Terminal类有一个disableEcho()方法来执行您想要的操作。I suggest using JLine http://jline.sourceforge.net
The
Terminalclass has adisableEcho()method to do what you want.使用框架中的 textArea 和 keyListener 编写您自己的控制台输出/输入
Write your own console output/input using a textArea in a frame and a keyListener
查看
java.io.Console- 您可以使用readPassword()读取不带回显的字符串。但它仍然是面向行的，因此在用户按 Enter 之前您不会收到任何内容。另一个可能的缺点是可能没有控制台 - 取决于应用程序的启动方式。Check out
java.io.Console- you can read a string w/o echo withreadPassword(). It is still line oriented though, so you won't receive anything until user presses Enter. Another possible disadvatage is that there may be no console - depends on the way app is launched.