Io流之字符流的介绍及使用

package Io流;

import org.junit.Test;

import java.io.*;

/**
 * 字符流读取纯文本文件
 * 1.字符输入流 Reader
 *      1.1 FileReader
 *      1.2 BufferedReader
 * 2.字符输出流 Writer
 *      2.1 FileWriter
 *      2.2 BufferedWriter
 */
public class Demo06 {
    @Test
    public void test(){
        FileReader reader = null;
        FileWriter writer = null;

        try {
            File file = new File("d:\\11.txt");
             reader= new FileReader(file);
             writer = new FileWriter("e:\\22.txt");
             char[] chars = new char[1024];
             int len = 0;
             while ((len = reader.read(chars))!=-1){
                 String s = new String(chars, 0, len);
                 writer.write(s);
             }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                reader.close();
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}