网络编程考试题(网络编程考试题及答案)
C#网络编程作业题目，应该很简单，不过本人愚笨呐，哪位高手帮个忙啊？感激不尽呀~
题1
static void Main(string[] args)
{
int num;
int i = 1;
int j = 1;
int x = 1;
for (i = 1; i = 5;i++ )
{
num = i * i;
Console.WriteLine(num);
}
while (j 6)
{
num = i * i;
Console.WriteLine(num);
i++;
}
do
{
num = i * i;
Console.WriteLine(num);
i++;
} while (x 6);
}
题2
public static bool character(string input)
{
if (input.Length != 5)
{
Console.WriteLine("输入长度不符合,请重新输入!");
return false;
}
else if (input == input.ToLower())
{
Console.WriteLine("请输入大写字母!");
return false;
}
else
{
Console.WriteLine("输入成功!");
return true;
}
}
static void Main(string[] args)
{
for (; ; )
{
string input;
Console.WriteLine("请输入五个大写字母");
input = Console.ReadLine();
if (character(input))
{
break;
}
}
}
题3
static void Main(string[] args)
{
for (; ; )
{
int num;
Console.WriteLine("请输入一个数:");
num = int.Parse(Console.ReadLine());
if (num 0)
{
for (int i = 1; i = num; i++)
{
Console.Write(i + " ");
}
Console.WriteLine();
}
else
{
Console.WriteLine("程序退出!");
break;
}
}
}
题4 俺数学丑...........汗一个..........
求大神帮忙做几道java题，感谢 !有关于网络编程的
第二题 一个doDemo方法搞定 这个是列出D盘下所有文件及文件目录，然后再列出所有的.txt后缀的文件。static List allList = new ArrayList();static List txtList = new ArrayList();public static void doDemo() {File file = new File("D:" + File.separator);if (null == file)return;allList.clear();txtList.clear();listAllFile(file);for (String p : allList) {System.out.println("file: " + p);}for (String txt : txtList) {System.out.println("txt file: " + txt);}}public static void listAllFile(File dir) {if (null == dir || !dir.exists()) {return;}if (dir.isDirectory()) {File[] files = dir.listFiles();if (null != files) {for (int i = 0; i files.length; i++) {if (files[i].isDirectory()) {listAllFile(files[i]);} else {String fileName = files[i].getName();if (fileName.endsWith(".txt")) {txtList.add(files[i].getPath());}allList.add(files[i].getPath());}}}} else {allList.add(dir.getPath());}}
JAVA网络编程基础试题！300分！请一定要帮我做一下，两个解答题。一个编程题，重点是编程题，谢谢了！！
2.百度百科搜索很详细
3.附件中的代码仅供参考
TcpSocketServerDemo.java
package?yaoshun.InetAddress;
import?java.io.DataInputStream;
import?java.io.DataOutputStream;
import?java.io.IOException;
import?java.net.ServerSocket;
import?java.net.Socket;
import?java.util.ArrayList;
import?java.util.List;
import?java.util.Random;
/*
?*?客户端：TCP服务器端
?*/
public?class?TcpSocketServerDemo?{
private?ServerSocket?serverSocket;//?服务器连接
private?int?port;?//?服务器监听端口
private?ListSocket?sockets;
private?int?ranNumber;
/**
?*?服务器结束的标志
?*/
public?boolean?ISEND;
public?TcpSocketServerDemo(int?port)?{
this.port?=?port;
serverSocket?=?null;
sockets?=?new?ArrayListSocket();
ranNumber?=?new?Random().nextInt(50);
}
/*
?*?启动服务器
?*/
public?void?starServer()?{
try?{
//?第一步：建立服务器连接（绑定监听端口）
serverSocket?=?new?ServerSocket(port);
System.out.println("姚舜的服务器已经启动...");
Socket?socket;//?客户端连接(如果建立连接时，本机网络不容或服务器程序未启动则会抛出异常)
ServerThread?serverThread;
Thread?t2;
while?(!ISEND)?{
//?第二步：监听端口（获取客户端连接）
socket?=?serverSocket.accept();
if?(ISEND)?{
while?(!socket.isClosed())?{
socket.close();
Thread.sleep(100);
}
}?else?{
sockets.add(socket);
serverThread?=?new?ServerThread(this,?socket);
t2?=?new?Thread(serverThread);
t2.start();
}
}
for?(Socket?s?:?sockets)?{
s.close();
}
serverSocket.close();
}?catch?(Exception?e)?{
e.printStackTrace();
}
}
public?static?void?main(String[]?args)?{
TcpSocketServerDemo?tDemo?=?new?TcpSocketServerDemo(1000);
tDemo.starServer();
}
/**
?*?校验
?*?
?*?@param?i
?*?@return
?*/
public?int?check(int?i)?{
if?(i??ranNumber)?{
return?-1;
}?else?if?(i??ranNumber)?{
return?1;
}
return?0;
}
}
/**
?*?服务端处理线程
?*
?*/
class?ServerThread?implements?Runnable?{
private?TcpSocketServerDemo?tDemo;
private?Socket?socket;
private?DataInputStream?dis;//?输入流（读取数据）
private?DataOutputStream?dos;//?输出流（发送数据）
public?ServerThread(TcpSocketServerDemo?tDemo,?Socket?socket)?{
super();
this.tDemo?=?tDemo;
this.socket?=?socket;
try?{
dis?=?new?DataInputStream(socket.getInputStream());
dos?=?new?DataOutputStream(socket.getOutputStream());
}?catch?(IOException?e)?{
e.printStackTrace();
}
}
public?void?run()?{
String?message?=?"";
int?i;
int?index?=?0;
int?result?=?0;
while?(!message.equals("Quit")??index??5)?{
try?{
message?=?dis.readUTF();
}?catch?(IOException?e)?{
e.printStackTrace();
}
try?{
i?=?Integer.parseInt(message);
result?=?tDemo.check(i);
if?(result?==?1)?{
dos.writeUTF("数字大了");
}?else?if?(result?==?-1)?{
dos.writeUTF("数字小了");
}
if?(result?==?0)?{
dos.writeUTF("猜中了");
break;
}
}?catch?(NumberFormatException?|?IOException?e)?{
continue;
}
index++;
}
try?{
dis.close();
dos.close();
socket.close();
}?catch?(IOException?e)?{
e.printStackTrace();
}
}
}
TcpSocketClientDemo.java
package?yaoshun.InetAddress;
import?java.io.DataInputStream;
import?java.io.DataOutputStream;
import?java.io.IOException;
import?java.net.Socket;
import?java.net.UnknownHostException;
import?java.util.Scanner;
/*
?*?演示类：TCP客户端
?*/
public?class?TcpSocketClientDemo?{
private?Socket?socket;//?客户端连接(如果建立连接时，本机网络不容或服务器程序未启动则会抛出异常)
private?DataInputStream?dis;//?输入流（读取数据）
private?DataOutputStream?dos;//?输出流（发送数据）
//?private?String?serverIP;//?服务器IP地址
//?private?int?serverPort;//?服务器监听端口
private?String?sendData;//?发送的数据
public?TcpSocketClientDemo(String?serverIP,?int?serverPort)?throws?UnknownHostException,?IOException?{
//?this.serverIP?=?serverIP;
//?this.serverPort?=?serverPort;
socket?=?new?Socket(serverIP,?serverPort);
dis?=?new?DataInputStream(socket.getInputStream());
dos?=?new?DataOutputStream(socket.getOutputStream());
sendData?=?null;
startClient();
}
public?void?startClient()?{
try?{
//?第一步：创建客户端连接
System.out.println("===我的客户端界面===");
//?第二步：客户端向服务器发送数据
int?i?=?0;
Scanner?input?=?new?Scanner(System.in);
while?(i??5)?{
System.out.println("请输入你的内容（客户端的）：");
sendData?=?input.nextLine();
if?(sendData.equals("quit"))?{
break;
}
dos.writeUTF(sendData);
sendData?=?dis.readUTF();
System.out.println("接收到服务器内容："?+?sendData);
if?(i?==?5)?{
System.out.println("超过允许次数,请重新连接服务器.");
}
if?(sendData.equals("猜中了"))?{
i?=?5;
}
i++;
}
input.close();
}?catch?(Exception?e)?{
e.printStackTrace();
}?finally?{
//?第四步：关闭输入流、输出流和客户端连接
try?{
dis.close();
dos.close();
socket.close();
}?catch?(Exception?e)?{
e.printStackTrace();
}
}
}
public?static?void?main(String[]?args)?{
try?{
new?TcpSocketClientDemo("127.0.0.1",?1000);
}?catch?(IOException?e)?{
e.printStackTrace();
}
}
}
