public class QuenDemo {
public static void main(String[] args){
//public class Queue extends Collection
Queue<Integer> queue=new LinkedList<Integer>();
Random rand = new Random(47);
for(int i=0;i<10;i++){
queue.offer(rand.nextInt(i+10));
}
System.out.println("1111"+queue.toString());
printQ(queue);
//public class LinkedList extends AbstractSequentialList implements List,Queue,Cloneable,Serializable
Queue<Character> qc=new LinkedList<Character>();
for(char c:"guoxzh".toCharArray()){
qc.offer(c);
System.out.println("qc=="+qc.toString());
}
printQ(qc);
}
public static void printQ(Queue queue){
while(queue.peek()!=null){
//peek和element都是在不移除的情況下返回對(duì)頭，但是peek在隊(duì)列為空的情況下返回null，element方法會(huì)拋出NoSuchElementException異常
System.out.println(queue.remove());
//remove和poll方法都是在移除并返回對(duì)頭，但是poll在為空時(shí)返回null，而remove會(huì)拋出NoSucheElementException異常
System.out.println("2222"+queue.toString());
}
}
}