Java Scanner findWithinHorizon() metodi

❮ Scanner metodlari

// Create a scanner object
Scanner myObj = new Scanner("Please send an email to info@example.com for more details.");

// Get the email address with a pattern
String email = myObj.findWithinHorizon("[a-zA-Z]+@[a-zA-Z]+.[a-zA-Z]{2,}", 0);

// Show the email if found
if (email != null) {
  System.out.println(email);
} else {
  System.out.println("No email found");
}

Ta’rif va qo‘llanilishi

findWithinHorizon() metodi ko‘rsatilgan miqdordagi belgilar ichidan Pattern obyekti yoki string ko‘rinishida berilgan muntazam ifodaning birinchi mosligini qidiradi. Moslik topilmasa, null qaytaradi.

Qidiriladigan belgilar soni horizon parametri orqali belgilanadi; agar u nolga teng bo‘lsa, qidiruv cheklovsiz davom etadi.

Moslik topilsa, skaner moslikdan keyingi birinchi belgiga o‘tadi.

Muntazam ifodalar haqida Java RegEx darsligimizda batafsil bilib oling.

Sintaksis

Quyidagilardan biri:

public String findWithinHorizon(Pattern pattern, int horizon)

public String findWithinHorizon(String pattern, int horizon)

Parametr qiymatlari

Texnik tafsilotlar

❮ Scanner metodlari