~~~ package io.a5; import java.io.*; //转换流是将java不允许的情况变成可能，System.in是字节流，new InputStreamReader(System.in)是将字节流转成字符流 public class Test { public static void main(String[] args) { System.out.println("****" ); String zfc = null; try { BufferedReader zhl = new BufferedReader(new InputStreamReader(System.in) ); zfc = zhl.readLine(); System.out.println("字符串是 " + zfc); } catch (Exception e) { } } } ~~~