BufferedWriter写入

package com;

import java.io.*;

/** * BufferedWriter:带有缓存的字符输出流。 */
public class test { 
   
    public static void main(String[] args) { 
   
        //带有缓存区的字符输出流
        BufferedWriter out = null;

        try { 
   
            // out = new BufferedWriter(new FileWriter("mybatis001/src/main/java/com/itcast/dao/test.txt"));
            //true追加内容，不清空
            out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("mybatis001/src/main/java/com/itcast/dao/test.txt",true)));
            //开始写
            out.write("hello");
            out.write("\n");
            out.write("你好");
            //刷新
            out.flush();
            //关闭流
            out.close();
        } catch (IOException e) { 
   
            e.printStackTrace();
        } finally { 
   
            if (out != null) { 
   
                try { 
   
                    out.close();
                } catch (IOException e) { 
   
                    e.printStackTrace();
                }
            }
        }
    }
}