java依次写入文件

以下是Java依次写入文件的两种方法：

1. 使用BufferedWriter类逐行写入文件：

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;

public class WriteToFile {
    public static void main(String[] args) {
        ArrayList<String> arrayList = new ArrayList<>();
        arrayList.add("hello");
        arrayList.add("java");
        arrayList.add("hello");
        arrayList.add("world");

        try {
            BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter("D:\\itcast\\List.txt"));
            for (String s : arrayList) {
                bufferedWriter.write(s);
                bufferedWriter.newLine();
                bufferedWriter.flush();
            }
            bufferedWriter.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

2. 使用PrintWriter类逐行写入文件：

import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;

public class WriteToFile {
    public static void main(String[] args) {
        ArrayList<String> arrayList = new ArrayList<>();
        arrayList.add("hello");
        arrayList.add("java");
        arrayList.add("hello");
        arrayList.add("world");

        try {
            PrintWriter printWriter = new PrintWriter(new FileWriter("D:\\itcast\\List.txt"));
            for (String s : arrayList) {
                printWriter.println(s);
            }
            printWriter.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}