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Main.java
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164 lines (132 loc) · 5.82 KB
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import io.reactivex.Observable;
import java.util.Arrays;
import java.util.List;
public class Main {
public static void main( String[] args ) {
startWith(0);
amb();
combineLatest();
concat();
merge();
sequenceEqual();
zip();
}
/**
* Emit a specified sequence of items before beginning to emit the items the items
* from the source Observable.
**/
private static void startWith(Integer item) {
System.out.println("startWith");
List<Integer> integerList = Arrays.asList(1, 2, 3);
System.out.println(integerList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
System.out.println("startWith(" + item + ") =====================>");
integerObservable.startWith(item)
.subscribe(System.out::println);
System.out.println();
}
/**
* Given two or more source Observables, emit all of the items from only the first
* of these Observables to emit an item or notification.
**/
private static void amb() {
System.out.println("amb");
List<Integer> integerList = Arrays.asList(1, 2, 3);
List<String> stringList = Arrays.asList("A", "B", "C");
System.out.println(integerList);
System.out.println(stringList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
Observable<String> stringObservable = Observable.fromIterable(stringList);
System.out.println("amb =====================>");
Observable.ambArray(integerObservable, stringObservable)
.subscribe(System.out::println);
System.out.println();
}
/**
* When an item is emitted by either of two Observables, combine the latest item
* emitted by each Observable via a specified function and emit items based on the
* results of this function. Implemented differently across platforms and
* synchronisation modes.
**/
private static void combineLatest() {
System.out.println("combineLatest");
List<Integer> integerList = Arrays.asList(1, 2, 3);
List<String> stringList = Arrays.asList("A", "B", "C");
System.out.println(integerList);
System.out.println(stringList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
Observable<String> stringObservable = Observable.fromIterable(stringList);
System.out.println("combineLatest =====================>");
Observable.combineLatest(integerObservable, stringObservable, (integer, s) -> integer + s)
.subscribe(System.out::println);
System.out.println();
}
/**
* Emit the emissions from two or more observables sequentially, one set after
* another.
**/
private static void concat() {
System.out.println("concat");
List<Integer> integerList = Arrays.asList(1, 2, 3, 4);
List<String> stringList = Arrays.asList("A", "B", "C");
System.out.println(integerList);
System.out.println(stringList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
Observable<String> stringObservable = Observable.fromIterable(stringList);
System.out.println("concat =====================>");
Observable.concat(integerObservable, stringObservable)
.subscribe(System.out::println);
System.out.println();
}
/**
* Combine multiple Observables into one by merging their emissions.
*
**/
private static void merge() {
System.out.println("merge");
List<String> stringList = Arrays.asList("M", "R", "G", "D");
List<String> stringList1 = Arrays.asList("E", "E");
System.out.println(stringList);
System.out.println(stringList1);
Observable<String> stringObservable = Observable.fromIterable(stringList);
Observable<String> stringObservable1 = Observable.fromIterable(stringList1);
System.out.println("merge =====================>");
Observable.merge(stringObservable, stringObservable1)
.subscribe(System.out::println);
System.out.println();
}
/**
* Emit true if two Observables emit the same sequence of items, or false otherwise.
*
**/
private static void sequenceEqual() {
System.out.println("sequenceEqual");
List<Integer> integerList = Arrays.asList(1, 2);
List<Integer> integerList1 = Arrays.asList(1, 2);
System.out.println(integerList);
System.out.println(integerList1);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
Observable<Integer> integerObservable1 = Observable.fromIterable(integerList1);
System.out.println("sequenceEqual =====================>");
Observable.sequenceEqual(integerObservable, integerObservable1)
.subscribe(System.out::println);
System.out.println();
}
/**
* Combine the emissions of multiple Observables together via a specified function
* and emit single items for each combination based on the results of this function.
**/
private static void zip() {
System.out.println("zip");
List<Integer> integerList = Arrays.asList(1, 2, 3);
List<String> stringList = Arrays.asList("A", "B", "C");
System.out.println(integerList);
System.out.println(stringList);
Observable<Integer> integerObservable = Observable.fromIterable(integerList);
Observable<String> stringObservable = Observable.fromIterable(stringList);
System.out.println("zip =====================>");
Observable.zip(integerObservable, stringObservable, (integer, s) -> integer + s)
.subscribe(System.out::println);
System.out.println();
}
}