java IO 之InputStreamReader和OutputStreamWriter

 1  package com.io.test;
 2 
 3  import java.io.BufferedReader;
 4  import java.io.IOException;
 5  import java.io.InputStreamReader;
 6 
 7  import org.junit.Test;
 8 
 9  public  class TestInputStreamReader {
10 
11     @Test
12      public  void test() {
13         InputStreamReader reader =  new InputStreamReader(System.in);
14         BufferedReader br =  new BufferedReader(reader);
15         String s =  null;
16          try {
17             s = br.readLine();
18              while (s !=  null) {
19                  if (s.equalsIgnoreCase("exit"))
20                      break;
21                 System.out.println(s.toUpperCase());
22                 s = br.readLine();
23             }
24             br.close();
25         }  catch (IOException e) {
26             e.printStackTrace();
27         }
28         
29     }
30 }

 

 

 1  package com.io.test;
 2 
 3  import java.io.FileNotFoundException;
 4  import java.io.FileOutputStream;
 5  import java.io.IOException;
 6  import java.io.OutputStreamWriter;
 7 
 8  import org.junit.Test;
 9 
10  public  class TestOutputStreamWriter {
11 
12     @Test
13      public  void test() {
14          try {
15             OutputStreamWriter writer =  new OutputStreamWriter( new FileOutputStream("/Users/Jet/Documents/workspace/IOTest/test/com/io/test/test.java"));
16             writer.write("开始输入字符：");
17             System.out.println(writer.getEncoding());
18             writer.close();
19             
20             writer =  new OutputStreamWriter( new FileOutputStream("/Users/Jet/Documents/workspace/IOTest/test/com/io/test/test.java", true),"ISO-8859-1");
21             writer.write("又一次输入字符");
22             System.out.println(writer.getEncoding());
23             writer.close();
24             
25         }  catch (FileNotFoundException e) {
26             e.printStackTrace();
27         }  catch (IOException e) {
28             e.printStackTrace();
29         }
30     }
31 
32 }