8、使用转换流处理标准输入

 1 package Io;
 2 
 3 import java.io.BufferedReader;
 4 import java.io.IOException;
 5 import java.io.InputStreamReader;
 6 
 7 public class TestSystem {
 8     public static void main(String[] args) {
 9         BufferedReader br = null;
10         // 把字节流转为字符流
11         try {
12             br = new BufferedReader(new InputStreamReader(System.in));
13             String str = null;
14             while ((str = br.readLine()) != null) {
15                 if (str.equals("exit"))
16                     break;
17                 System.out.println(str);
18             }
19         } catch (Exception e) {
20             e.printStackTrace();
21         } finally {
22             try {
23                 if (br != null)
24                     br.close();
25             } catch (IOException e) {
26                 e.printStackTrace();
27             }
28         }
29     }
30 }