FileReader和FileWriter类的学习

这2个类是与操作字节流的FileInputSream和FileOutputStream类相对应的;
用于读写文本数据;这4个类当然也是输入输出流的总括;
下面也通过一个例子来熟悉:

package cn.com;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class FileStream {

	public static void main(String[] args) {
		try {
			FileWriter out = new FileWriter("hello.txt");
			out.write("www.sohu.com111");

			//这里需要关闭流,将缓冲数据写到文件当中
			out.close();

			char[] buf = new char[1024];

			FileReader in = new FileReader("hello.txt");
			int len = in.read(buf);
			System.out.println(new String(buf, 0, len));

		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
}