java - 从键盘(控制台)读取字符，而无需按Enter键

Question

这个问题已经有了答案：
How to read a single char from the console in Java (as the user types it)?
5个答案
如何在不按回车键的情况下从键盘（控制台）读取字符，请帮助我。是否可以在控制台应用程序中使用keyevent？

Answer 1

查看此链接可能会得到您的答案：
http://code.runnable.com/UqaE-KocrFtRAAKL/reading-characters-from-console-in-java
或者试试这个

import java.io.*;
public class ConsoleReadingDemo {
    public static void main(String[] args) {
        java.io.InputStreamReader reader = new java.io.InputStreamReader(System.in);
        boolean b = false;
        while(!b)
        {
            try 
            {
                int key = System.in.read();
                // read a character and process it 
                System.out.println("key pressed");
                b = true;
             } catch (java.io.IOException ioex) {
                System.out.println("IO Exception");
             }
             // edit, lets not hog any cpu time
             try {
                Thread.sleep(50);
                System.out.println("nop yet");
             } catch (InterruptedException ex) {
                // can't do much about it can we? Ignoring 
                System.out.println("Interrupted Exception");
             }
        }
    }
}