RxJava - BehaviorSubject

BehaviorSubject memancarkan item terbaru yang telah diamati dan kemudian semua item yang diamati berikutnya ke setiap Observer yang berlangganan.

Deklarasi Kelas

Berikut adalah deklarasi untuk io.reactivex.subjects.BehaviorSubject<T> kelas -

public final class BehaviorSubject<T>
extends Subject<T>

Contoh BehaviorSubject

Buat program Java berikut menggunakan editor pilihan Anda di, misalnya, C: \> RxJava.

ObservableTester.java

import io.reactivex.subjects.BehaviorSubject;
public class ObservableTester  {
   public static void main(String[] args) {   
      final StringBuilder result1 = new StringBuilder();
      final StringBuilder result2 = new StringBuilder();         
      BehaviorSubject<String> subject =  BehaviorSubject.create(); 
      subject.subscribe(value -> result1.append(value) ); 
      subject.onNext("a"); 
      subject.onNext("b"); 
      subject.onNext("c"); 
      subject.subscribe(value -> result2.append(value)); 
      subject.onNext("d"); 
      subject.onComplete();
      //Output will be abcd
      System.out.println(result1);
      //Output will be cd being BehaviorSubject 
      //(c is last item emitted before subscribe)
      System.out.println(result2);
   }
}