字符流 字节流 相互转换

public static void main(String[] args) throws IOException {
// 字符流转字节流
//	try {
//	//写入文件
	String str = "中国人得到";

	PrintWriter pw = new PrintWriter("C:\\Documents and Settings\\Administrator\\桌面\\1.txt");     
	pw.write(str);       
	pw.close();
//	
	FileWriter fw=new FileWriter("C:\\Documents and Settings\\Administrator\\桌面\\1.txt");
	fw.write("ttplayer");
	fw.close();
//读取文件字符流  转换为字符串
//	FileReader r=new FileReader("C:\\Documents and Settings\\Administrator\\桌面\\1.txt");
//	char[] buf = new char[2];        
//	int len = 0; 
//	String str =null;
//	while((len=r.read(buf))!=-1){
//	str+=new String(buf,0,len);
//	}
//	System.out.println(str);
//	将字符串转换为字节流
//	InputStream in=new ByteArrayInputStream(str.getBytes());
//	OutputStream out=new FileOutputStream(new File("C:\\Documents and Settings\\Administrator\\桌面\\CRM_444.txt"));
//	int len1=0;
//	byte[] b=new byte[1024];
//	while((len1=in.read(b))!=-1){
//	out.write(b, 0, len1);
//	}
//	out.flush();
//	} catch (FileNotFoundException e) {
//	// TODO Auto-generated catch block
//	e.printStackTrace();
//	}
//字符流转字节流
InputStream is=new FileInputStream("C:\\Documents and Settings\\Administrator\\桌面\\1.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String str=br.readLine();
System.out.println(str);