Java IO

Java IO

示例：字符流-将用户在控制台中输入的内容保存到文件中

public static void main(String[] args) throws IOException {//psvm
    Scanner scanner = new Scanner(System.in);
    String data = scanner.next();
    FileWriter writer = new FileWriter("f.txt");//ctrl+alt+v
    writer.write(data);
    writer.flush();
    writer.close();
}

示例：将随机生成的字符串保存到文件中

public static void main(String[] args) throws IOException {//psvm
        File file = new File("F:\\f.txt");
        FileWriter writer = new FileWriter(file);//ctrl+alt+v
        BufferedWriter bw = new BufferedWriter(writer);
        for(int i =0;i