testbufferedwriter.java

本书是一本为Java学习者在基础内容学习结束后进行课程设计时提供参考的指导书

package apibook.c3.s2;

import java.io.*;

public class TestBufferedWriter {
  public TestBufferedWriter() {
  }

  public static void main(String[] args) {
    String enc = "";
    String outputfilename = "";
    if(args.length != 2) {
        System.err.println("Usage: java TestBufferedWriter <enc> <outputfilename>");
        enc = "UTF-8";
        outputfilename="TestBufferedWriter.txt";
    }
    else
    {
      enc = args[0];
      outputfilename = args[1];
    }
    try {
      //创建一个BufferedWriter，使用给定的字符编码和输出文件
        BufferedWriter out = new BufferedWriter(new OutputStreamWriter(
            new FileOutputStream(outputfilename), enc));
        out.newLine();//空一行
        out.write("Test BufferedWriter class");//输入字符串
        out.newLine();//空行
        out.write('A');//输入字符
        char[] buf = {'b', 'c', 'd', 'e'};
        out.newLine();//空行
        out.write(buf);//输入字符数组
        out.newLine();//空行
        out.flush();//刷新流，可以不使用，因为close会刷新流
        out.close();//关闭流
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
  }
}