src/main/java/io/reactivex/Observable.java
@CheckReturnValue
    @SchedulerSupport(SchedulerSupport.NONE)
    public final Observable<T> repeat(long times) {
        if (times < 0) {
            throw new IllegalArgumentException("times >= 0 required but it was " + times);
        }
        if (times == 0) {
            return empty();
        }
        return RxJavaPlugins.onAssembly(new ObservableRepeat<T>(this, times));
    }
@CheckReturnValue
    @SchedulerSupport(SchedulerSupport.NONE)
    public final Observable<T> repeat(long times) {
        if (times < 0) {
            throw new IllegalArgumentException("times >= 0 required but it was " + times);
        }
        if (times == 0) {
            return empty();
        }
        return RxJavaPlugins.onAssembly(new ObservableRepeat<T>(this, times));
    }
@ CheckReturnValue @ SchedulerSupport ( SchedulerSupport . NONE ) public final Observable < T > repeat ( long times ) { if ( times < 0 ) { throw new IllegalArgumentException ( "times >= 0 required but it was " + times ) ; } if ( times == 0 ) { return empty ( ) ; } return RxJavaPlugins . onAssembly ( new ObservableRepeat < T > ( this , times ) ) ; }
Returns an Observable that repeats the sequence of items emitted by the source ObservableSource at most
{@code count} times.
<p>
<img width="640" height="336" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/repeatCount.o.png" alt="">
<dl>
<dt><b>Scheduler:</b></dt>
<dd>{@code repeat} does not operate by default on a particular {@link Scheduler}.</dd>
</dl>

@param times
the number of times the source ObservableSource items are repeated, a count of 0 will yield an empty
sequence
@return an Observable that repeats the sequence of items emitted by the source ObservableSource at most
{@code count} times
@throws IllegalArgumentException
if {@code count} is less than zero
@see <a href="http://reactivex.io/documentation/operators/repeat.html">ReactiveX operators documentation: Repeat</a>
Returns an Observable that repeats the sequence of items emitted by the source ObservableSource at most { @code count } times . <p > <img width = 640 height = 336 src = https : // raw . github . com / wiki / ReactiveX / RxJava / images / rx - operators / repeatCount . o . png alt = > <dl > <dt > <b > Scheduler : < / b > < / dt > <dd > { @code repeat } does not operate by default on a particular { @link Scheduler } . < / dd > < / dl >