Java.io.OutputStreamWriter.write String() 方法

package com.codingdict;



import java.io.*;



public class OutputStreamWriterDemo {



   public static void main(String[] args) {

      String s = "Hello world!";



      try {



         // create a new OutputStreamWriter

         OutputStream os = new FileOutputStream("test.txt");

         OutputStreamWriter writer = new OutputStreamWriter(os);



         // create a new FileInputStream to read what we write

         FileInputStream in = new FileInputStream("test.txt");



         // write something in the file

         writer.write(s, 0, 5);



         // flush the stream

         writer.flush();



         // read what we write

         for (int i = 0; i < 5; i++) {

            System.out.print("" + (char) in.read());

         }



      } catch (Exception ex) {

         ex.printStackTrace();

      }

   }

}