java - Is there an opposite for the DelayQueue? -


i need queue automatically remove elements older given amount of milliseconds - basically, want items in queue expire after time.

i see there delay queue seems doing opposite: 'an element can taken when delay has expired.' (i've never used it).

maybe there queue implementation need? better if bounded.

if want remove expired objects need delayqueue , thread extract expired objects it, this:

static class wrapper<e> implements delayed {     e target;     long exp = system.currenttimemillis() + 5000; // 5000 ms delay      wrapper(e target) {         this.target = target;     }      e get() {         return target;     }      @override     public int compareto(delayed o) {         return 0;     }      @override     public long getdelay(timeunit unit) {         return unit.convert(exp - system.currenttimemillis(), timeunit.milliseconds);     } }   public static void main(string[] args) throws exception {     final delayqueue<wrapper<integer>> q = new delayqueue<>();     q.add(new wrapper<>(1));     thread.sleep(3000);     q.add(new wrapper<>(2));      new thread() {         public void run() {             try {                 for(;;) {                     wrapper<integer> w = q.take();                     system.out.println(w.get());                 }             } catch (interruptedexception e) {                 throw new runtimeexception(e);             }         };     }.start(); } 

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