5-1作业

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.channels.FileLockInterruptionException;

public class Test {

	public static void main(String[] args) {
		// 创建product对象
		Product one=new Product(123,"iPhone","telephone",4888.0f);
		Product two=new Product(234,"iPad","computer",5088.0f);
		Product three=new Product(345,"MacBook","computer",10688.0f);
		Product four=new Product(256,"iWatch","watch",4799.0f);
		String s="apple系列产品信息：\n"+one.toString()+"\n\n"+two.toString()+"\n\n"+three.toString()+"\n\n"+four.toString();
        //System.out.println(s);
		//创建文件Product
		File file=new File("Product.txt");
		try {
			file.createNewFile();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//对象输入
		try {
			FileReader fr=new FileReader("Product.txt");
			BufferedReader br=new BufferedReader(fr);
			FileWriter fw=new FileWriter("Product.txt");
			BufferedWriter bw=new BufferedWriter(fw);
			//将信息写入文件
			bw.write(s);;
			bw.flush();
			//读对象信息
			//System.out.println(br.readLine());
			String s1=br.readLine();
			while(s1!=null) {
				s1=br.readLine();
				if(s1!=null) {
					System.out.println(s1);
				}			    			
			}
			bw.flush();
			fw.flush();
			fr.close();
			br.close();
			fw.close();
			bw.close();
		} catch (FileLockInterruptionException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}
我这样输入和输出String类型数据可以么