readchars.java

《A first book of java》by Gary J.Bronson 北大出版社

import java.io.*;
public class ReadChars
{
  public static void main (String[] args) 
    throws java.io.IOException
  {
    
    String message = "";
    int inchr;

    System.out.println("Enter a string of characters:");
  
    while( (inchr = System.in.read()) != -1)
      message = message + (char)inchr;

    System.out.println("\n\nThe string entered is:");
    System.out.println(message);
  }
}