深入浅析Java 中的IO流字符流

public class ISReaderAndOSWriter {  public static void main(String[] args) throws IOException {    FileInputStream in = new FileInputStream("F:\\javaio\\java.txt");    FileOutputStream out = new FileOutputStream("F:\\javaio\\java1.txt");        InputStreamReader isr = new InputStreamReader(in, "gbk");    OutputStreamWriter osw = new OutputStreamWriter(out, "gbk");        int c;//    while ((c = isr.read()) != -1) {//      System.out.print((char)c);//    }        char[] buf = new char[8 * 1024];    while ((c = isr.read(buf, 0, buf.length)) != -1) {      String s = new String(buf, 0, c);      //System.out.println(s);      osw.write(s);    }       isr.close();    osw.close();  }}