41 lines
1.3 KiB
Java
41 lines
1.3 KiB
Java
// containersindepth/QueueBehavior.java
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// Compares the behavior of some of the queues
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import java.util.concurrent.*;
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import java.util.*;
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import java.util.function.*;
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import onjava.*;
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public class QueueBehavior {
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private static int count = 10;
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static <T> void test(Queue<T> queue, Supplier<T> gen) {
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for(int i = 0; i < count; i++)
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queue.offer(gen.get());
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while(queue.peek() != null)
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System.out.print(queue.remove() + " ");
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System.out.println();
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}
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static class Gen implements Supplier<String> {
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String[] s = ("one two three four five six seven " +
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"eight nine ten").split(" ");
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int i;
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@Override
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public String get() { return s[i++]; }
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}
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public static void main(String[] args) {
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test(new LinkedList<>(), new Gen());
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test(new PriorityQueue<>(), new Gen());
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test(new ArrayBlockingQueue<>(count), new Gen());
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test(new ConcurrentLinkedQueue<>(), new Gen());
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test(new LinkedBlockingQueue<>(), new Gen());
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test(new PriorityBlockingQueue<>(), new Gen());
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}
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}
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/* Output:
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one two three four five six seven eight nine ten
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eight five four nine one seven six ten three two
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one two three four five six seven eight nine ten
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one two three four five six seven eight nine ten
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one two three four five six seven eight nine ten
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eight five four nine one seven six ten three two
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*/
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