13 lines
480 B
Java
13 lines
480 B
Java
import java.util.LinkedList;
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import java.util.Queue;
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...
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Queue<Integer> queue = new LinkedList<Integer>();
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System.out.println(queue.isEmpty()); // empty test - true
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// queue.remove(); // would throw NoSuchElementException
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queue.add(1);
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queue.add(2);
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queue.add(3);
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System.out.println(queue); // [1, 2, 3]
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System.out.println(queue.remove()); // 1
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System.out.println(queue); // [2, 3]
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System.out.println(queue.isEmpty()); // false
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