java文件按行讀寫，解決中文亂碼

package test;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class FileTest {

	public static void main(String args[]) throws Exception {

		File fin = new File("F:\\Work\\test1.unl");
		File fout = new File("F:\\Work\\test3.unl");
		if (!fin.exists()) {
			System.out.println("文件不存在，退出");
			return;
		}
		if (fout.exists()) {
			fout.delete();
			fout.createNewFile();
		} else {
			fout.createNewFile();
		}
		BufferedReader br = new BufferedReader(new InputStreamReader(
				new FileInputStream(fin), "GBK"));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(
				new FileOutputStream(fout), "GBK"));
		String lineRead = null;
		long line = 1;
		while ((lineRead = br.readLine()) != null) {
			lineRead = lineRead + ",18888888888\n";
			bw.write(lineRead);
			line++;
			if (line % 1000 == 0) {
				System.out.println(line + "");
			}
		}
		System.out.println(line);
		bw.close();
		br.close();

	}

}