Java reads and writes YAML files

import ;

import .*;

import ;

public class Main {

public static void main(String[] args) {

try {

Map m1,m2,m3,m4;

FileWriter fw;

    /* Read */

Yaml y = new Yaml();

    //Create file object

File file = new File("");

    //Parse yaml content into map table

m1 = (Map) (new FileInputStream(file));

    //Get the "details" key in the first-level key as an object to further obtain the key and value of the lower level

m2 = (Map) ("details");

m3 = (Map) ("friends");

            //The email key belongs to the third level, assign its key to its value

("email", "asdasd@");

    //Get the "info" key in the third level key

m4 = (Map) ("info");

    // Assign the fourth level key "tel" to 2222

("tcp", 2222);

    /* Write */

    //Initialize the filewriter object for write operations

fw = new FileWriter(file);

    // Use snakeyaml dump method to parse the map class into yaml content

((m1));

    //Write to file

();

();

} catch (IOException e) {

();

} catch (Exception e) {

();

}

}

}