模拟停止等待协议内容解说
packageweb;importjava.awt.Color;importjava.awt.FileDialog;importjava.awt.TextArea;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.awt.event.KeyAdapter;importjava.awt.event.KeyEvent;importjava.awt.event.KeyListener;importjava.awt.event.WindowAdapter;importjava.awt.event.WindowEvent;importjavax.swing.JButton;importjavax.swing.JFrame;//importjavax.swing.JList;importjavax.swing.JPanel;importjavax.swing.JLabel;importsun.security.krb5.internal.s;importjava.awt.List;importjava.io.BufferedReader;importjava.io.File;importjava.io.FileInputStream;importjava.io.FileNotFoundException;importjava.io.FileReader;importjava.io.IOException;importjava.io.InputStream;importjava.io.InputStreamReader;importjava.io.Reader;importjava.net.*;importjava.util.Random;
publicclassStop_and_WaitextendsJFrame{
privateJPaneljPanel;privateTextAreasentTextArea;privateJButtonchooseFileButton,sentButton,cleanButton;privateJLabelsentFileLabel,sentMessageLabel,sentStatusLabel,receiveStatusLabel,receiveFileLabel;privateListsentStatusList,sentAllFileList,receiveStatusList,receiveFileList;privatebooleanisTout=false,isACK=true,sentNum=true,receiveNum=false,changeTemp=true,lastIsACK=true;privateintreSentNum=0,lineNum=-1;
publicStop_and_Wait(){init();listener();
}publicvoidinit(){jPanel=newJPanel();jPanel.setBackground(Color.PINK);this.setContentPane(jPanel);sentFileLabel=newJLabel("SentFile:");sentFileLabel.setBounds(20,20,100,30);jPanel.add(sentFileLabel);sentMessageLabel=newJLabel("AllSentFileMessage:");sentMessageLabel.setBounds(20,260,150,30);jPanel.add(sentMessageLabel);sentTextArea=newTextArea();sentTextArea.setBounds(20,50,300,200);jPanel.add(sentTextArea);sentAllFileList=newList();sentAllFileList.setBounds(20,290,300,200);jPanel.add(sentAllFileList);sentStatusList=newList();sentStatusList.setBounds(360,50,300,200);jPanel.add(sentStatusList);receiveFileList=newList();receiveFileList.setBounds(690,50,180,440);jPanel.add(receiveFileList);sentStatusLabel=newJLabel("SentStatusMessage:");sentStatusLabel.setBounds(360,20,150,30);jPanel.add(sentStatusLabel);receiveFileLabel=newJLabel("ReceiveFile:");receiveFileLabel.setBounds(690,20,100,30);jPanel.add(receiveFileLabel);receiveStatusLabel=newJLabel("ReceiveStatusMessage:");receiveStatusLabel.setBounds(360,260,150,30);jPanel.add(receiveStatusLabel);receiveStatusList=newList();receiveStatusList.setBounds(360,290,300,200);jPanel.add(receiveStatusList);chooseFileButton=newJButton("ChooseFile");chooseFileButton.setBounds(100,500,110,40);jPanel.add(chooseFileButton);chooseFileButton.setToolTipText("选择要发送的文件");sentButton=newJButton("SentData");sentButton.setBounds(400,500,110,40);jPanel.add(sentButton);sentButton.setToolTipText("发送文件");cleanButton=newJButton("Clean");cleanButton.setBounds(700,500,110,40);jPanel.add(cleanButton);cleanButton.setToolTipText("清除信息");setTitle("StopandWaitProtocolSimulator");setBounds(80,60,900,600);this.setLayout(null);this.setBackground(newColor(2,3,5));this.setResizable(false);setVisible(true);}publicbooleanisTout(){Randomrandom=newRandom();//System.out.println(random.nextInt(10));if(random.nextInt(10)>8){returntrue;}else{returnfalse;}//importjava.lang.Math;//System.out.println(Math.random()*10);}publicbooleanisCRC_Right(){Randomrandom=newRandom();//System.out.println(random.nextInt(10));if(random.nextInt(10)>2){//isACK=true;returntrue;}else{//isACK=false;returnfalse;}}publicvoidsetSentNum(){//if(sentNum=false)//sentNum=true;//else//sentNum=false;sentNum=!sentNum;}publicvoidsetReceiveNum(){//if(receiveNum=false)//receiveNum=true;//else//receiveNum=false;receiveNum=!receiveNum;}publicvoidlistener(){//addWindowListeneraddWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){System.exit(0);//System.exit(intstatus);零参数正常终止JVM;非零参数非正常终止(提前)JVM}});//chooseFileButton.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){FileDialogfileDialog=newFileDialog(newJFrame(),"请选择传输文件");fileDialog.setVisible(true);Filefile=newFile(fileDialog.getDirectory()+fileDialog.getFile());/**解析：BufferedReader有readLine()方法；男人就是人（子类对象当着父类对象用）本文地址：http://www.45fan.com/dnjc/71945.html