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import rx.Observable;

import rx.Subscriber;

/**

* onCompleted() and onError()

* Created by matie on 26/04/15.

*/

public class example12 {

public static void main(String[] args){

Observable.just("Hello World")

.map(s -> (String)potentialException(s))

.map(s -> (String)anotherPotentialException(s))

.subscribe(new Subscriber<String>() {

@Override

public void onCompleted() {

System.out.println("Completed");

}

@Override

public void onError(Throwable throwable) {

System.out.println("Error");

}

@Override

public void onNext(String s) {

System.out.println(s);

}

});

}

private static Object anotherPotentialException(String s) {

//no need to throw errors here. Point made

return s;

}

private static Object potentialException(String s) {

if(s.contains("World")){

try {

throw new Throwable();

} catch (Throwable throwable) {

return throwable;

}

}else{

return s;

}

}

}