JAVA 中文件读写函数BufferedReader 和 BufferedWriter 的使用

import java.io.*;
import javax.swing.*;
import java.lang.*;
import static javax.swing.JFrame.*;

public class Main {
	public static void main(String args[]) {
		try {
			String t[] = { "小明，男，20", "小红，女，21", "小刚，男，29" };
			FileWriter fr = new FileWriter("A.txt");//这里也可以用File来构造
			BufferedWriter br = new BufferedWriter(fr);//利用FileReader来构造
			for (String s : t) {
				br.write(s);
				br.newLine();//腐乳换行
			}
			br.close();
			fr.close();
			FileReader fr1 = new FileReader("A.txt");
			BufferedReader br1 = new BufferedReader(fr1);
			String s = br1.readLine();
			while (s != null) {
				System.out.println(s);
				s = br1.readLine();
			}
			br1.close();
			fr1.close();
		} catch (IOException e) {
			System.out.println(e.getMessage());
		}
	}
}