Java 转换流

/*
* 转换流InputStreamReader  OutputStreamWriter，将字节流转变为字符流。这样我们可以直接输入中文。
*/
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
public class Test16 {

public static void main(String[] args) throws IOException
{
/*
//第一个
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
String str=br.readLine();
while(str!=null)
{
if(str.equalsIgnoreCase("exit"))
{
break;
}
System.out.println(str.toUpperCase());
str=br.readLine();
}*/

//第二个
OutputStream os = new FileOutputStream("f:/d.txt",true);
OutputStreamWriter osw = new OutputStreamWriter(os);
osw.write("我的妈妈");
osw.close();
}
}