java流类练习前篇

总结：

package com.aini;

import java.io.*;

public class gf {
	public static String main(String[] args) throws IOException {
		BufferedWriter out = null;// H

		try {
			// out=new BufferedWriter(out);//cuo le
			out = new BufferedWriter(new FileWriter("filename", true));
			out.write("MISS LANG a wo");//

		} catch (Exception e) {
			e.printStackTrace();

		} finally {
			if (out != null)
				out.close();
		}
		return out.toString();
	}

}