操作:
1、写一个字符
留神:
不要忘了抛异样;
void flush() 刷新,刷新完能力把缓冲区的数据写进文件里,flush 之后还能写数据
close() 执行了先刷新后开释资源,close 之后不能写数据了
2、写指定字符串内的字符
OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("osw.txt"));
char[] chs = ["a","b","c","d","e"];
osw.write(chs,0,chs.length);
//osw.write(chs,2,4)
osw.close();
3、写一个字符串
OutputStreamWriter osw = new OutputStreamWriter(new OutputStream(“osw.txt”));
osw.write(“abcde”);
osw.close();
4、写一个字符串的一部分
OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("osw.txt"));
osw.write("abcdef",2,4);
osw.close();
二、字符流读数据的 2 种形式
办法一:
办法二:
字节流和字符流的读数据形式,格局一样,只不过一个是 byte[], 一个是 char[]