read.java

本书结合作者丰富的实践经验和深厚的理论基础

//read.Java
import java.io.*; 
public class read { 
    public static void main(String[ ] args) { 
        echo(System.in); 
    } 

    public static void echo(InputStream in) { 
        try { 
            while (true) { 
                int i = in.read(); 
			  if (i=='q')  {
                    break; 
                }
		      char c=(char)i;
                System.out.print(c); 
            } 
        }
        catch (IOException e) { 
            System.err.println(e);
        } 
        System.out.println(); 
    } 
}