字符缓冲流的存储和读取（基础）

将一个ArrayList数组通过BufferedWriter储存到“English.txt”文件中

public class ArrayListToTxtDemo {
    public static void main(String[] args) throws IOException {
        ArrayList<String> arrayList = new ArrayList<>();
        arrayList.add("Hello");
        arrayList.add("I'm fine");
        arrayList.add("Thank you");
        arrayList.add("And you?");
        BufferedWriter bw = new BufferedWriter(new FileWriter("com.idea_primary\\English.txt"));
        for (String s : arrayList){
            bw.write(s);
            bw.newLine();
            bw.flush();
        }
        bw.close();
    }

读取“English.txt”文件

public class TxTArrayListDemo {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader("com.idea_primary\\English.txt"));
        ArrayList<String> arrayList = new ArrayList<>();
        String line;
        while ((line = br.readLine())!=null){
            arrayList.add(line);
        }
        br.close();
        for (String s : arrayList){
            System.out.println(s);
        }
    }
}

控制台输出：
Hello
I’m fine
Thank you
And you?