close()

Java Scanner close() metodi

Misol

Fayldan o‘qib bo‘lgach, close() metodidan foydalaning:

import java.io.File;  // Import the File class
import java.io.FileNotFoundException;  // Import this class to handle errors
import java.util.Scanner; // Import the Scanner class to read text files

public class ReadFile {
  public static void main(String[] args) {
    try {
      File myObj = new File("filename.txt");
      Scanner myReader = new Scanner(myObj);
      while (myReader.hasNextLine()) {
        String data = myReader.nextLine();
        System.out.println(data);
      }
      myReader.close();
    } catch (FileNotFoundException e) {
      System.out.println("An error occurred.");
      e.printStackTrace();
    }
  }
}

Misolni ishga tushirish »

Ta’rif va qo‘llanilishi

close() metodi skaner o‘qiyotgan fayl yoki kirish oqimini yopadi. close() metodi chaqirilgandan so‘ng joriy Scanner obyektidan boshqa foydalanib bo‘lmaydi.

Eslatma: System.in yordamida yaratilgan skanerni yopish System.in oqimining o‘zini ham yopadi va undan boshqa foydalanib bo‘lmay qoladi. close() metodini faqat fayllar bilan ishlatgan ma’qul.

Sintaksis

public void close()

Tegishli sahifalar

Java darsligi: Fayl yaratish va unga yozish.

❮ Scanner metodlari

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