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import javax.swing.*;
import java.awt.*;
public class ToCenter
{
  public ToCenter(JFrame frame)
   {
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package com.yz.myqueue;
public class Queue {
private Integer size;
private Integer front;
private Integer rear;
private Object[] datas;
public Queue(int size){
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this.front=-1;
this.rear=-1;
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package test;
import java.io.File;
import org.jivesoftware.smack.Chat;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.MessageListener;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack ......
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