import java.io.*;

public class FileStreamTest {

public static void main(String[] args) throws IOException {

/* int bWrite[] = {11, 21, 3, 666};

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

for (int i = 0; i <bWrite.length ; i++) {

outputStream.write(bWrite[i]);

}

outputStream.close();

InputStream is = new FileInputStream("test.txt");

int size = is.available();

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

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

}

is.close();*/

File file=new File("a.txt");

FileOutputStream fop =new FileOutputStream(file);

OutputStreamWriter writer = new OutputStreamWriter(fop, "UTF-8");

// 构建OutputStreamWriter对象,参数可以指定编码,默认为操作系统默认编码,windows上是gbk

writer.append("中文输入");

// 写入到缓冲区

writer.append("\r\n");

// 换行

writer.append("English");

// 刷新缓存冲,写入到文件,如果下面已经没有写入的内容了,直接close也会写入

writer.close();

// 关闭写入流,同时会把缓冲区内容写入文件,所以上面的注释掉

fop.close();

// 关闭输出流,释放系统资源

FileInputStream fip = new FileInputStream(file);

// 构建FileInputStream对象

InputStreamReader reader = new InputStreamReader(fip, "UTF-8");

// 构建InputStreamReader对象,编码与写入相同

StringBuffer sb = new StringBuffer();

while (reader.ready()) {

sb.append((char) reader.read());

// 转成char加到StringBuffer对象中

}

System.out.println(sb.toString());

reader.close();

// 关闭读取流

fip.close();

// 关闭输入流,释放系统资源

}

}