create folder and file in java

import java.io.File;

class Main {

  public void animalSound() {

  }

  public void sleep() {

    try{

    System.out.println("Zzz");

    File myObj = new File("pawan");

    myObj.mkdir();

    File myObjs = new File("pawan/filename123.txt");

    myObjs.createNewFile();

    } catch(Exception e) {

      System.out.println("error---"+e);

    }

  }

  public static void main(String arg[]) {

    Main gbh = new Main();

    gbh.sleep();

  }

import java.io.File;

import java.io.FileWriter;

class Main {

  public void animalSound() {

  }

  public void sleep() {

    try{

    System.out.println("Zzz");

    File myObj = new File("pawan");

    if(!myObj.exists()) {

    myObj.mkdir();

    }

    File myObjs = new File("pawan/filename123.txt");

    if(!myObjs.exists()) {

    myObjs.createNewFile();

    }

    FileWriter myWriter = new FileWriter("pawan/filename123.txt",true);

      myWriter.write("Files in Java might be tricky, but it is fun enough!");

      myWriter.close();

    } catch(Exception e) {

      System.out.println("error---"+e);

    }

  }

  public static void main(String arg[]) {

    Main gbh = new Main();

    gbh.sleep();

  }

}