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Main.java
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132 lines (105 loc) · 4.23 KB
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import com.tunjos.rxjava2.NumberUtils;
import io.reactivex.Observable;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class Main {
public static void main( String[] args ) {
all();
contains(5);
skipWhile();
skipUntil();
takeWhile();
takeUntil();
}
/**
* Emit true if all items emitted by an Observable meet some criteria, or false
* otherwise.
**/
private static void all() {
System.out.println("all");
List<Integer> integerList = Arrays.asList(3, 5, 7);
System.out.println(integerList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
System.out.println("all(x => isPrime(x) =====================>");
integerObservable.all(NumberUtils::isPrime)
.subscribe(System.out::println);
System.out.println();
}
/**
* Emit true if an Observable emits a particular item, or false otherwise.
*
**/
private static void contains(Object element) {
System.out.println("contains");
List<Integer> integerList = Arrays.asList(1, 55, 25);
System.out.println(integerList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
System.out.println("contains(" + element + ") =====================>");
integerObservable.contains(element)
.subscribe(System.out::println);
System.out.println();
}
/**
* Discard items emitted by an Observable until a specified condition becomes false.
*
**/
private static void skipWhile() {
System.out.println("skipWhile");
List<Integer> integerList = Arrays.asList(1, 2, 3);
System.out.println(integerList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
System.out.println("skipWhile(x => x != 2) =====================>");
integerObservable.skipWhile(x -> x != 2)
.subscribe(System.out::println);
System.out.println();
}
/**
* Discard items emitted by an Observable until a second Observable starts emitting
* items.
**/
private static void skipUntil() {
System.out.println("skipUntil");
List<Integer> integerList = Arrays.asList(1, 2, 3);
List<Integer> integerList1 = Collections.singletonList(0);
System.out.println(integerList);
System.out.println(integerList1);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
Observable<Integer> integerObservable1 = Observable.fromIterable(integerList1);
System.out.println("skipUntil =====================>");
integerObservable.skipUntil(integerObservable1)
.subscribe(System.out::println);
System.out.println();
}
/**
* Mirror items emitted by an Observable until a specified condition becomes false.
*
**/
private static void takeWhile() {
System.out.println("takeWhile");
List<Integer> integerList = Arrays.asList(2, 4, 16, 9, 11);
System.out.println(integerList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
System.out.println("takeWhile(x => isEven(x) =====================>");
integerObservable.takeWhile(NumberUtils::isEven)
.subscribe(System.out::println);
System.out.println();
}
/**
* Discard any items emitted by an Observable after a second Observable emits an
* item or terminates.
**/
private static void takeUntil() {
System.out.println("takeUntil");
List<Integer> integerList = Arrays.asList(1, 2, 3, 4);
List<Integer> integerList1 = Collections.singletonList(0);
System.out.println(integerList);
System.out.println(integerList1);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
Observable<Integer> integerObservable1 = Observable.fromIterable(integerList1);
System.out.println("takeUntil =====================>");
integerObservable.takeUntil(integerObservable1)
.subscribe(System.out::println);
System.out.println();
}
}